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Liu, S.; Cool, P.; Collart, O.; van der Voort, P.; Vansant, E.F.; Lebedev, O.I.; Van Tendeloo, G.; Jiang, M. | ||||
| Title | The influence of the alcohol concentration on the structural ordering of mesoporous silica: cosurfactant versus cosolvent | Type | A1 Journal article | ||
| Year | 2003 | Publication | The journal of physical chemistry : B : condensed matter, materials, surfaces, interfaces and biophysical | Abbreviated Journal | J Phys Chem B |
| Volume | 107 | Issue | Pages | 10405-10411 | |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Washington, D.C. | Editor | ||
| Language | Wos | 000185401900013 | Publication Date | 2003-09-18 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1520-6106;1520-5207; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.177 | Times cited | 134 | Open Access | |
| Notes | Approved | Most recent IF: 3.177; 2003 IF: 3.679 | |||
| Call Number | UA @ lucian @ c:irua:46264 | Serial | 1643 | ||
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| Author |
Liu, S.; Lebedev, O.I.; Mertens, M.; Meynen, V.; Cool, P.; Van Tendeloo, G.; Vansant, E.F. | ||||
| Title | The merging of silica-surfactant microspheres under hydrothermal conditions | Type | A1 Journal article | ||
| Year | 2008 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 116 | Issue | Pages | 141-146 | |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
| Abstract | Post-synthesis hydrothermal treatments have been used to improve the quality of MCM-41 materials. In our latest work, merging of surfactant-containing silica microspheres during the hydrothermal treatments was observed. Mechanistic insights and the different stages that are involved in the merging process can be summarized as follows. First, the surfaces of the starting microspheres open up due to the dissolution of silica. Then the dissolved silica species provide mass source for the formation of particle necks connecting two neighboring microspheres. Gradually, surfaces of the starting microspheres are flattened to meet the needs of further growth of the necks. Finally, some chain-like highly-ordered mesoporous structures up to several micrometers are formed. The observed merging of the surfactant-containing microspheres is a re-assembling process, which is under the control of electrostatic force between the dissolved silica species and the surfactant cations. The occluded surfactant cations in the precursor spheres play important roles in the merging process. | ||||
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| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000261133600021 | Publication Date | 2008-04-13 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.615 | Times cited | 5 | Open Access | |
| Notes | Fwo; Goa | Approved | Most recent IF: 3.615; 2008 IF: 2.555 | ||
| Call Number | UA @ lucian @ c:irua:72021 | Serial | 1997 | ||
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| Author |
Liu, S.; Rao, J.; Sui, X.; Cool, P.; Vansant, E.F.; Van Tendeloo, G.; Cheng, X. | ||||
| Title | Preparation of hollow silica spheres with different mesostructures | Type | A1 Journal article | ||
| Year | 2008 | Publication | Journal of non-crystalline solids | Abbreviated Journal | J Non-Cryst Solids |
| Volume | 354 | Issue | 10/11 | Pages | 826-830 |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) | ||||
| Abstract | Hollow silica spheres were quickly synthesized by an octylamine (OA) templating method using tetraethyl orthosilicate (TEOS) as the silica source. N2-sorption results indicate that the hollow spheres have high surface areas and pore volumes. XRD and TEM measurements reveal that the structure of the hollow spheres depends on the amount of TEOS used in the synthesis. When low amount of TEOS is added, the template-containing precursor spheres depict an XRD pattern with two peaks, which can be indexed to a lamellar phase. After the removal of the template, the obtained hollow spheres show no diffraction peaks in the XRD pattern, suggesting that the nanopores in the silica shells are disordered. If increasing the amount of TEOS, either the uncalcined or the calcined sample gives an XRD pattern with a single diffraction peak. The mesostructure of these hollow silica spheres is typically as HMS materials. TGA analyses suggest that the interaction between the silica species and surfactant is stronger in the latter case. | ||||
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| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000253216700003 | Publication Date | 2007-09-17 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0022-3093; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 2.124 | Times cited | 26 | Open Access | |
| Notes | Gao | Approved | Most recent IF: 2.124; 2008 IF: 1.449 | ||
| Call Number | UA @ lucian @ c:irua:72018 | Serial | 2703 | ||
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| Author |
Liu, S.; Wei, M.; Sui, X.; Cheng, X.; Cool, P.; Van Tendeloo, G. | ||||
| Title | A scanning electron microscopy study on hollow silica microspheres: defects and influences of the synthesis composition | Type | A1 Journal article | ||
| Year | 2009 | Publication | Journal of sol-gel science and technology | Abbreviated Journal | J Sol-Gel Sci Techn |
| Volume | 49 | Issue | 3 | Pages | 373-379 |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) | ||||
| Abstract | Defects on hollow silica spheres synthesized in a tetraethylorthosilicate-octylamine-HCl-H2O system were recorded by scanning microscope. Based on the results, influences of synthesis composition on the formation of these defects are discussed. It is evidenced that products prepared with different octylamine-to-tetraethylorthosilicate ratios may have surface depressions, cracks and non-hollow microspheres. However, by changing water and acid additions, these defects could be reduced or eliminated. Generally, samples synthesized with a large octylamine addition commonly exhibit surface depressions. A small octylamine or a large water addition benefits the formation of solid silica microspheres among the product. Acid, although is not indispensable for the formation of hollow spheres, helps to eliminate or reduce depressions on the hollow shells. It is explained that the added acid gives rise to a relative localized fast hydrolysis versus condensation, facilitating an easy mobility of hydrolyzed silica species, and consequently the shell surface is smoothened. | ||||
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| Publisher | Kluwer | Place of Publication | Dordrecht | Editor | |
| Language | Wos | 000263260100015 | Publication Date | 2008-12-16 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0928-0707;1573-4846; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 1.575 | Times cited | 1 | Open Access | |
| Notes | Approved | Most recent IF: 1.575; 2009 IF: 1.393 | |||
| Call Number | UA @ lucian @ c:irua:74962 | Serial | 2941 | ||
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| Author |
Meynen, V.; Beyers, E.; Cool, P.; Vansant, E.F.; Mertens, M.; Weyten, H.; Lebedev, O.I.; Van Tendeloo, G. | ||||
| Title | Post-synthesis deposition of V-Zeolitic nanoparticles in SBA-15 | Type | A1 Journal article | ||
| Year | 2004 | Publication | Chemical communications | Abbreviated Journal | Chem Commun |
| Volume | Issue | Pages | 898-890 | ||
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000221124300084 | Publication Date | 2004-03-25 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1359-7345;1364-548X; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 6.319 | Times cited | 22 | Open Access | |
| Notes | Approved | Most recent IF: 6.319; 2004 IF: 3.997 | |||
| Call Number | UA @ lucian @ c:irua:44934 | Serial | 2684 | ||
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| Author |
Meynen, V.; Busuioc, A.M.; Beyers, E.; Cool, P.; Vansant, E.F.; Bilba, N.; Mertens, M.; Lebedev, O.; Van Tendeloo, G. | ||||
| Title | Nanodesign of combined micro- and mesoporous materials for specific applications in adsorption and catalysis | Type | H3 Book chapter | ||
| Year | 2007 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
| Keywords | H3 Book chapter; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
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| Publisher | Nova | Place of Publication | New York | Editor | |
| Language | Wos | Publication Date | 0000-00-00 | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Additional Links | UA library record | ||
| Impact Factor | Times cited | Open Access | |||
| Notes | Approved | Most recent IF: NA | |||
| Call Number | UA @ lucian @ c:irua:63126 | Serial | 2251 | ||
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| Author |
Meynen, V.; Cool, P.; Vansant, E.F.; Kortunov, P.; Grinberg, F.; Kärger, J.; Mertens, M.; Lebedev, O.I.; Van Tendeloo, G. | ||||
| Title | Deposition of vanadium silicalite-1 nanoparticles on SBA-15 materials: structural and transport characteristics of SBA-VS-15 | Type | A1 Journal article | ||
| Year | 2007 | Publication | Microporous and mesoporous materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 99 | Issue | 1/2 | Pages | 14-22 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000243845200003 | Publication Date | 2006-10-28 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.615 | Times cited | 23 | Open Access | |
| Notes | FWO; GOA; Inside-Pores NoE (FP-EU) | Approved | Most recent IF: 3.615; 2007 IF: 2.210 | ||
| Call Number | UA @ lucian @ c:irua:61567 | Serial | 647 | ||
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| Author |
Ndayirinde, C.; Gorbanev, Y.; Ciocarlan, R.-G.; De Meyer, R.; Smets, A.; Vlasov, E.; Bals, S.; Cool, P.; Bogaerts, A. | ||||
| Title | Plasma-catalytic ammonia synthesis : packed catalysts act as plasma modifiers | Type | A1 Journal article | ||
| Year | 2023 | Publication | Catalysis today | Abbreviated Journal | |
| Volume | 419 | Issue | Pages | 114156-12 | |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
| Abstract | We studied the plasma-catalytic production of NH3 from H2 and N2 in a dielectric barrier discharge plasma reactor using five different Co-based catalysts supported on Al2O3, namely Co/Al2O3, CoCe/Al2O3, CoLa/Al2O3, CoCeLa/Al2O3 and CoCeMg/Al2O3. The catalysts were characterized via several techniques, including SEM-EDX, and their performance was compared. The best performing catalyst was found to be CoLa/Al2O3, but the dif-ferences in NH3 concentration, energy consumption and production rate between the different catalysts were limited under the same conditions (i.e. feed gas, flow rate and ratio, and applied power). At the same time, the plasma properties, such as the plasma power and current profile, varied significantly depending on the catalyst. Taken together, these findings suggest that in the production of NH3 by plasma catalysis, our catalysts act as plasma modifiers, i.e., they change the discharge properties and hence the gas phase plasma chemistry. Importantly, this effect dominates over the direct catalytic effect (as e.g. in thermal catalysis) defined by the chemistry on the catalyst surface. | ||||
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| Language | Wos | 000987221300001 | Publication Date | 2023-04-10 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0920-5861 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 5.3 | Times cited | 3 | Open Access | OpenAccess |
| Notes | This research was supported by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 810182 – SCOPE ERC Synergy project) and the Methusalem project of the University of Antwerp. We also gratefully acknowledge the NH3-TPD analysis performed by Sander Bossier. | Approved | Most recent IF: 5.3; 2023 IF: 4.636 | ||
| Call Number | UA @ admin @ c:irua:197268 | Serial | 8917 | ||
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| Author |
Özen, M.; Mertens, M.; Luyten, J.; Snijkers, F.; d' Hondt, H.; Cool, P. | ||||
| Title | Hydrothermal synthesis of carbonate-free submicron-sized barium titanate from an amorphous precursor : synthesis and characterization | Type | A1 Journal article | ||
| Year | 2012 | Publication | Ceramics international | Abbreviated Journal | Ceram Int |
| Volume | 38 | Issue | 1 | Pages | 619-625 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
| Abstract | In this paper, the amorphous barium titanate precursor was prepared by the peroxo-hydroxide method and post-treated by various drying procedures, such as: room temperature drying, room temperature vacuum drying and vacuum drying at 50 degrees C. The objective in the latter two treatments was to increase the Ti-O-Ba bonds of the precursor. The post-treated precursors were compared with the untreated (i.e., 'wet') precursor. Also, a barium titanate precursor was prepared by an alkoxide route. Afterwards, the precursors were hydrothermally treated at 200 degrees C in a 10 M NaOH solution. Vacuum drying of the precursor seemingly promoted the formation of Ti-O-Ti bonds in the hydrothermal end-product. The low Ba:Ti ratio (0.66) of the alkoxide-route prepared precursor lead to a multi-phase hydrothermal product with BaTiO(3) as the main phase. In contrast, phase pure BaTiO(3), i.e. without BaCO(3) contamination, was obtained for the precursor which was dried at room temperature. Cube-shaped and highly crystalline BaTiO(3) particles were observed by electron microscopy for the hydrothermally treated peroxo-hydroxide-route prepared precursor. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Barking | Editor | ||
| Language | Wos | 000298766900083 | Publication Date | 2011-08-02 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0272-8842; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 2.986 | Times cited | 14 | Open Access | |
| Notes | Approved | Most recent IF: 2.986; 2012 IF: 1.789 | |||
| Call Number | UA @ lucian @ c:irua:96263 | Serial | 1541 | ||
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| Author |
Özen, M.; Mertens, M.; Snijkers, F.; Van Tendeloo, G.; Cool, P. | ||||
| Title | Texturing of hydrothermally synthesized BaTiO3 in a strong magnetic field by slip casting | Type | A1 Journal article | ||
| Year | 2016 | Publication | Ceramics international | Abbreviated Journal | Ceram Int |
| Volume | 42 | Issue | 42 | Pages | 5382-5390 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
| Abstract | Barium titanate powder was processed by slip casting in a rotating strong magnetic field of 9.4 T. The orientation factor of the sintered compact was analyzed by the X-ray diffraction technique and the microstructure (grain-size) was analyzed by scanning electron microscope. The hydrothermally prepared barium titanate was used as matrix material and the molten-salt synthesized barium titanate, with a larger particle-size, was used as template for the templated grain-growth process. Addition of large template particles was observed to increase the orientation factor of the sintered cast (5 vol% loading). Template particles acted as starting grains for the abnormal grain-growth process and the average grain-size was increased after sintering. Increasing the solid loading (15 vol%) resulted in a similar orientation factor with a decrease of the average grain size by more than half. However, addition of templates to the 15 vol% cast had a negative effect on the orientation factor. The impingement of growing particles was stated as the primary cause of particle misorientation resulting in a low orientation factor after sintering. Different heating conditions were tested and it was determined that a slow heating rate gave the highest orientation factor, the smallest average grain-size and the highest relative density. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. | ||||
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| Publisher | Place of Publication | Barking | Editor | ||
| Language | Wos | 000369460500098 | Publication Date | 2015-12-23 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0272-8842 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 2.986 | Times cited | 11 | Open Access | |
| Notes | Approved | Most recent IF: 2.986 | |||
| Call Number | UA @ lucian @ c:irua:132228 | Serial | 4260 | ||
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| Author |
Pacquets, L.; Van den Hoek, J.; Arenas Esteban, D.; Ciocarlan, R.-G.; Cool, P.; Baert, K.; Hauffman, T.; Daems, N.; Bals, S.; Breugelmans, T. | ||||
| Title | Use of nanoscale carbon layers on Ag-based gas diffusion electrodes to promote CO production | Type | A1 Journal article | ||
| Year | 2022 | Publication | ACS applied nano materials | Abbreviated Journal | |
| Volume | 5 | Issue | 6 | Pages | 7723-7732 |
| Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA); Applied Electrochemistry & Catalysis (ELCAT) | ||||
| Abstract | A promising strategy for the inhibition of the hydrogen evolution reaction along with the stabilization of the electrocatalyst in electrochemical CO2 reduction cells involves the application of a nanoscale amorphous carbon layer on top of the active catalyst layer in a gas diffusion electrode. Without modifying the chemical nature of the electrocatalyst itself, these amorphous carbon layers lead to the stabilization of the electrocatalyst, and a significant improvement with respect to the inhibition of the hydrogen evolution reaction was also obtained. The faradaic efficiencies of hydrogen could be reduced from 31.4 to 2.1% after 1 h of electrolysis with a 5 nm thick carbon layer. Furthermore, the impact of the carbon layer thickness (5–30 nm) on this inhibiting effect was investigated. We determined an optimal thickness of 15 nm where the hydrogen evolution reaction was inhibited and a decent stability was obtained. Next, a thickness of 15 nm was selected for durability measurements. Interestingly, these durability measurements revealed the beneficial impact of the carbon layer already after 6 h by suppressing the hydrogen evolution such that an increase of only 37.9% exists compared to 56.9% without the use of an additional carbon layer, which is an improvement of 150%. Since carbon is only applied afterward, it reveals its great potential in terms of electrocatalysis in general. | ||||
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| Language | Wos | 000818507900001 | Publication Date | 2022-05-19 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 2574-0970 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 5.9 | Times cited | 3 | Open Access | OpenAccess |
| Notes | L.P. was supported through a Ph.D. fellowship strategic basic research (1S56920N) of the Research Foundation-Flanders (FWO). S.B. acknowledges financial support from ERC Consolidator Grant Number 815128 REALNANO. This research was financed by the Research Council of the University of Antwerp (BOF-GOA 33928). P.C. and R.-G.C. acknowledge financial support by FWO Flanders (project no. G038215N). The authors recognize the contribution of S. Pourbabak and T. Derez for the assistance with the Ag and carbon coating, Indah Prihatiningtyas and Bart Van der Bruggen for the assistance with the contact angle measurements, Daniel Choukroun for the use of the in-house-made hybrid flow cell, and Stijn Van den Broeck for his assistance with the FIB measurements. | Approved | Most recent IF: 5.9 | ||
| Call Number | UA @ admin @ c:irua:188887 | Serial | 7099 | ||
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| Author |
Potters, G.; Schoeters, G.; Tytgat, T.; Horvath, G.; Ludecke, C.; Cool, P.; Lenaerts, S.; Appels, L.; Dewil, R. | ||||
| Title | Pyrolysis kinetics of bamboo material | Type | P3 Proceeding | ||
| Year | 2010 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
| Keywords | P3 Proceeding; Engineering sciences. Technology; Laboratory of adsorption and catalysis (LADCA); Sustainable Energy, Air and Water Technology (DuEL) | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | Publication Date | |||
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| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Additional Links | UA library record | ||
| Impact Factor | Times cited | Open Access | |||
| Notes | Approved | Most recent IF: NA | |||
| Call Number | UA @ admin @ c:irua:82445 | Serial | 5987 | ||
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| Author |
Ribbens, S.; Beyers, E.; Schellens, K.; Mertens, M.; Ke, X.; Bals, S.; Van Tendeloo, G.; Meynen, V.; Cool, P. | ||||
| Title | Systematic evaluation of thermal and mechanical stability of different commercial and synthetic photocatalysts in relation to their photocatalytic activity | Type | A1 Journal article | ||
| Year | 2012 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 156 | Issue | Pages | 62-72 | |
| Keywords | A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
| Abstract | The effect of thermal treatment and mechanical stress on the structural and photocatalytic properties of eight different (synthetic and commercial) photocatalysts has been thoroughly investigated. Different mesoporous Ti-based materials were prepared via surfactant based synthesis routes (e.g. Pluronic 123, CTMABr = Cetyltrimethylammonium bromide) or via template-free synthesis routes (e.g. trititanate nanotubes). Also, the stabilizing effect of the NaOH/NH4OH post-treatment on the templated mesoporous materials and their photocatalytic activity was investigated. Furthermore, the thermal and mechanical properties of commercially available titanium dioxides such as P25 Evonik® and Millenium PC500® were studied. The various photocatalysts were analyzed with N2-sorption, X-ray diffraction (XRD), high resolution transmission electron microscopy (HR-TEM), differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) to obtain information concerning the specific surface area, pore volume, crystal structure, morphology, phase transitions, etc. In general, results show that the NaOH post-treatment leads to an increased control of the crystallization process during calcination resulting in a higher thermal stability, but at the same time diminishes the photocatalytic activity. Mesoporous materials in which pre-synthesized nanoparticles are used as titania source have the best mechanical stability whereas the mechanical stability of the nanotubes is the most limited. At increased temperatures and pressures, the tested commercial titanium dioxides lose their superior photocatalytic activity caused by a decreased accessibility of the active sites. The observed changes in adsorption capacities and photocatalytic activities cannot be assigned to one single phenomenon. In this respect, it shows the need to define a general/standard method to compare different photocatalysts. Furthermore, it is shown that the photocatalytic properties do not necessarily deteriorate under thermal stress, but can be improved due to crystallization, even though the initial material is (partially) destroyed. It is shown that the usefulness of a specific type of photocatalyst strongly depends on the application and the temperature/pressure to which it needs to resist. | ||||
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| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000303625200010 | Publication Date | 2012-02-08 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.615 | Times cited | 8 | Open Access | |
| Notes | Fwo | Approved | Most recent IF: 3.615; 2012 IF: 3.365 | ||
| Call Number | UA @ lucian @ c:irua:96910 | Serial | 3466 | ||
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| Author |
Ribbens, S.; Meynen, V.; Van Tendeloo, G.; Ke, X.; Mertens, M.; Maes, B.U.W.; Cool, P.; Vansant, E.F. | ||||
| Title | Development of photocatalytic efficient Ti-based nanotubes and nanoribbons by conventional and microwave assisted synthesis strategies | Type | A1 Journal article | ||
| Year | 2008 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 114 | Issue | 1/3 | Pages | 401-409 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA); Organic synthesis (ORSY) | ||||
| Abstract | Titanate nanotubes were prepared via a hydrothermal treatment of TiO2 powders (Riedel De Haen) in a basic solution. Morphology and structure of the prepared samples were characterized by high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), XRD, FT-Raman spectroscopy, nitrogen sorption and DSC. The photocatalytic activity was evaluated by photocatalytic oxidation of rhodamine 6G. Trititanate nanotubes (TTNT) with inner pore diameters between 4 and 4.2 nm and surface areas up till 360 m(2)/g could be synthesized. The synthesis route was modified by introduction of a calcination step, by applying a lower hydrothermal temperature and microwave irradiation in order to increase the photocatalytic activity of the porous photoactive nanotubular materials. Calcination and a softer hydrothermal treatment led to the formation of anatase without affecting the surface area and nanotubular shape of the samples. In this way, the photocatalytic activity of the original trititanate nanotubes could be significantly increased. By making use of microwave assisted synthesis, the photocatalytic activity call also be increased due to the presence of anatase. However, by applying microwave synthesis, a different structure was obtained, nanoribbons (NR) instead of nanotubcs, resulting in a decrease in surface area and porosity. | ||||
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| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000258432100040 | Publication Date | 2008-02-01 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.615 | Times cited | 47 | Open Access | |
| Notes | Fwo; Crp (Ua) | Approved | Most recent IF: 3.615; 2008 IF: 2.555 | ||
| Call Number | UA @ lucian @ c:irua:69696 | Serial | 683 | ||
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| Author |
Seftel, E.M.; Popovici, E.; Mertens, M.; de Witte, K.; Van Tendeloo, G.; Cool, P.; Vansant, E.F. | ||||
| Title | Zn-Al layered double hydroxides: synthesis, characterization and photocatalytic application | Type | A1 Journal article | ||
| Year | 2008 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 113 | Issue | 1/3 | Pages | 296-304 |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) | ||||
| Abstract | |||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000257362100035 | Publication Date | 2007-12-05 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.615 | Times cited | 154 | Open Access | |
| Notes | Approved | Most recent IF: 3.615; 2008 IF: 2.555 | |||
| Call Number | UA @ lucian @ c:irua:68281 | Serial | 3934 | ||
| Permanent link to this record | |||||
| Author |
Seftel, E.M.; Popovici, E.; Mertens, M.; Stefaniak, E.A.; Van Grieken, R.; Cool, P.; Vansant, E.F. | ||||
| Title | SnIV-containing layered double hydroxides as precursors for nano-sized ZnO/SnO2 photocatalysts | Type | A1 Journal article | ||
| Year | 2008 | Publication | Applied catalysis : B : environmental | Abbreviated Journal | |
| Volume | 84 | Issue | 3/4 | Pages | 699-705 |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation) | ||||
| Abstract | Sn4+-containing LDH was prepared using the co-precipitation method at constant pH, and characterized using X-ray diffraction, UVvis diffuse reflectance spectroscopy and TG/DTG methods. The obtained product was further exposed to different thermal treatments in order to obtain nano-sized coupled ZnO/SnO2 systems with enhanced photocatalytic performances than the ones obtained by mixing the two semiconductor oxides. The formation of a well-defined ZnO/SnO2 system and the crystallite size, fully investigated using XRD, micro-Raman scattering and UVvis DR techniques, were found to be influenced by the nature of the precursors and the calcination temperature. The photocatalytic activity of the ZnO/SnO2 systems, evaluated for the photodegradation of methyl orange (MO) dye, was studied as a function of the initial pH, catalyst loading and the calcination temperature. The metal dispersion supplied by layered structures proved to be an advantage when preparing coupled ZnO/SnO2 systems, the photocatalytic activity being 2.3 times higher comparing with the physical mixtures performances. The maximum photocatalytic activity of the coupled ZnO/SnO2 system having a layered precursor was observed when using neutral pH, at a catalyst loading of 1 g/L calcined at 600 °C for 4 h. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000261123600046 | Publication Date | 2008-06-19 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0926-3373 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | Times cited | Open Access | |||
| Notes | Approved | no | |||
| Call Number | UA @ admin @ c:irua:72020 | Serial | 8651 | ||
| Permanent link to this record | |||||
| Author |
Seftel, E.M.; Popovici, E.; Mertens, M.; Van Tendeloo, G.; Cool, P.; Vansant, E. | ||||
| Title | The influence of the cationic ratio on the incorporation of Ti4+ in the brucite-like sheets of layered double hydroxides | Type | A1 Journal article | ||
| Year | 2008 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 111 | Issue | 1-3 | Pages | 12-17 |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) | ||||
| Abstract | |||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000255847100004 | Publication Date | 2007-07-17 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.615 | Times cited | 29 | Open Access | |
| Notes | Approved | Most recent IF: 3.615; 2008 IF: 2.555 | |||
| Call Number | UA @ lucian @ c:irua:69136 | Serial | 1644 | ||
| Permanent link to this record | |||||
| Author |
Smeulders, G.; Meynen, V.; van Baelen, G.; Mertens, M.; Lebedev, O.I.; Van Tendeloo, G.; Maes, B.U.W.; Cool, P. | ||||
| Title | Rapid microwave-assisted synthesis of benzene bridged periodic mesoporous organosilicas | Type | A1 Journal article | ||
| Year | 2009 | Publication | Journal of materials chemistry | Abbreviated Journal | J Mater Chem |
| Volume | 19 | Issue | 19 | Pages | 3042-3048 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA); Organic synthesis (ORSY) | ||||
| Abstract | Following extended use in organic chemistry, microwave-assisted synthesis is gaining more importance in the field of inorganic chemistry, especially for the synthesis of nanoporous materials. It offers some major advantages such as a significant shortening of the synthesis time and an improved promotion of nucleation. In the research here reported, microwave technology is applied for the synthesis of benzene bridged PMOs (periodic mesoporous organosilicas). PMOs are one of the latest innovations in the field of hybrid ordered mesoporous materials and have attracted much attention because of their feasibility in electronics, catalysis, separation and sorption applications. The different synthesis steps (stirring, aging and extraction) of the classical PMO synthesis are replaced by microwave-assisted synthesis steps. The characteristics of the as-synthesized materials are evaluated by X-ray diffraction, N2-sorption, thermogravimetric analysis, scanning- and transmission electron microscopy. The microwave-assisted synthesis drastically reduces the synthesis time by more than 40 hours without any loss in structural properties, such as mesoscale and molecular ordering. The porosity of the PMO materials has even been improved by more than 25%. Moreover, the number of handling/transfer steps and amounts of chemicals and waste are drastically reduced. The study also shows that there is a clear time (1 to 3 hours) and temperature frame (373 K to 403 K) wherein synthesis of benzene bridged PMO is optimal. In conclusion, the microwave-assisted synthesis pathway allows an improved material to be obtained in a more economical way i.e. a much shorter time with fewer chemicals and less waste. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Cambridge | Editor | ||
| Language | Wos | 000265919300024 | Publication Date | 2009-03-17 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0959-9428;1364-5501; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | Times cited | 20 | Open Access | ||
| Notes | Fwo; Iwt | Approved | Most recent IF: NA | ||
| Call Number | UA @ lucian @ c:irua:76844 | Serial | 2810 | ||
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| Author |
Smeulders, G.; van Oers, C.; Van Havenbergh, K.; Houthoofd, K.; Mertens, M.; Martens, J.A.; Bals, S.; Maes, B.U.W.; Meynen, V.; Cool, P. | ||||
| Title | Smart heating profiles for the synthesis of benzene bridged periodic mesoporous organosilicas | Type | A1 Journal article | ||
| Year | 2011 | Publication | Chemical engineering journal | Abbreviated Journal | Chem Eng J |
| Volume | 175 | Issue | Pages | 585-591 | |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA); Organic synthesis (ORSY) | ||||
| Abstract | In this study the effects of the heating rate and heating time on the formation of crystal-like benzene bridged periodic mesoporous organosilicas (PMOs) are investigated. The time needed to heat up an autoclave during the hydrothermal treatment has shown to be crucial in the synthesis of PMOs, while the total duration of heating gave rise to only minor differences. By choosing a smart heating profile, superior PMO materials can be obtained in a short time. Different heating profiles in a range from one minute to one hour are adopted by microwave equipment and compared with conventional heating methods. The heating rate has a large influence on the porosity characteristics and the uniformity of the obtained particles. Moreover, two new alternative synthetic strategies to adopt the smart heating profile are presented, in order to give some possible solutions for the expensive microwave equipment. | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Lausanne | Editor | ||
| Language | Wos | 000297875900069 | Publication Date | 2011-10-07 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1385-8947; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 6.216 | Times cited | 7 | Open Access | |
| Notes | Fwo; Goa-Bof | Approved | Most recent IF: 6.216; 2011 IF: 3.461 | ||
| Call Number | UA @ lucian @ c:irua:93630 | Serial | 3044 | ||
| Permanent link to this record | |||||
| Author |
Stevens, W.J.J.; Lebeau, K.; Mertens, M.; Van Tendeloo, G.; Cool, P.; Vansant, E.F. | ||||
| Title | Investigation of the morphology of the mesoporous SBA-16 and SBA-15 materials | Type | A1 Journal article | ||
| Year | 2006 | Publication | The journal of physical chemistry : B : condensed matter, materials, surfaces, interfaces and biophysical | Abbreviated Journal | J Phys Chem B |
| Volume | 110 | Issue | 18 | Pages | 9183-9187 |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Washington, D.C. | Editor | ||
| Language | Wos | 000237451300042 | Publication Date | 2006-05-04 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1520-6106;1520-5207; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.177 | Times cited | 109 | Open Access | |
| Notes | Approved | Most recent IF: 3.177; 2006 IF: 4.115 | |||
| Call Number | UA @ lucian @ c:irua:58264 | Serial | 1738 | ||
| Permanent link to this record | |||||
| Author |
Stevens, W.J.J.; Mertens, M.; Mullens, S.; Thijs, I.; Van Tendeloo, G.; Cool, P.; Vansant, E.F. | ||||
| Title | Formation mechanism of SBA-16 spheres and control of their dimensions | Type | A1 Journal article | ||
| Year | 2006 | Publication | Microporous and mesoporous materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 93 | Issue | Pages | 119-124 | |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) | ||||
| Abstract | |||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000239252700014 | Publication Date | 2006-03-24 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.615 | Times cited | 34 | Open Access | |
| Notes | Approved | Most recent IF: 3.615; 2006 IF: 2.796 | |||
| Call Number | UA @ lucian @ c:irua:58822 | Serial | 1252 | ||
| Permanent link to this record | |||||
| Author |
Stevens, W.J.J.; Meynen, V.; Bruijn, E.; Lebedev, O.I.; Van Tendeloo, G.; Cool, P.; Vansant, E.F. | ||||
| Title | Mesoporous material formed by acidic hydrothermal assembly of silicalite-1 precursor nanoparticles in the absence of meso-templates | Type | A1 Journal article | ||
| Year | 2008 | Publication | Microporous and mesoporous materials: zeolites, clays, carbons and related materials | Abbreviated Journal | Micropor Mesopor Mat |
| Volume | 110 | Issue | 1 | Pages | 77-85 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
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| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000254056200010 | Publication Date | 2007-09-13 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1387-1811; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.615 | Times cited | 21 | Open Access | |
| Notes | Fwo; Crp; Inside-Pores | Approved | Most recent IF: 3.615; 2008 IF: 2.555 | ||
| Call Number | UA @ lucian @ c:irua:68229 | Serial | 1998 | ||
| Permanent link to this record | |||||
| Author |
Uytdenhouwen, Y.; Bal, Km.; Michielsen, I.; Neyts, Ec.; Meynen, V.; Cool, P.; Bogaerts, A. | ||||
| Title | How process parameters and packing materials tune chemical equilibrium and kinetics in plasma-based CO2 conversion | Type | A1 Journal article | ||
| Year | 2019 | Publication | Chemical engineering journal | Abbreviated Journal | Chem Eng J |
| Volume | 372 | Issue | Pages | 1253-1264 | |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
| Abstract | Plasma (catalysis) reactors are increasingly being used for gas-based chemical conversions, providing an alternative method of energy delivery to the molecules. In this work we explore whether classical concepts such as equilibrium constants, (overall) rate coefficients, and catalysis exist under plasma conditions. We specifically investigate the existence of a so-called partial chemical equilibrium (PCE), and how process parameters and packing properties influence this equilibrium, as well as the overall apparent rate coefficient, for CO2 splitting in a DBD plasma reactor. The results show that a PCE can be reached, and that the position of the equilibrium, in combination with the rate coefficient, greatly depends on the reactor parameters and operating conditions (i.e., power, pressure, and gap size). A higher power, higher pressure, or smaller gap size enhance both the equilibrium constant and the rate coefficient, although they cannot be independently tuned. Inserting a packing material (non-porous SiO2 and ZrO2 spheres) in the reactor reveals interesting gap/material effects, where the type of material dictates the position of the equilibrium and the rate (inhibition) independently. As a result, no apparent synergistic effect or plasma-catalytic behaviour was observed for the non-porous packing materials studied in this reaction. Within the investigated parameters, equilibrium conversions were obtained between 23 and 71%, while the rate coefficient varied between 0.027 s−1 and 0.17 s−1. This method of analysis can provide a more fundamental insight in the overall reaction kinetics of (catalytic) plasma-based gas conversion, in order to be able to distinguish plasma effects from true catalytic enhancement. |
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000471670400116 | Publication Date | 2019-05-08 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1385-8947 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 6.216 | Times cited | 3 | Open Access | Not_Open_Access: Available from 05.05.2021 |
| Notes | European Fund for Regional Development; FWOFWO, G.0254.14N ; University of Antwerp; FWO-FlandersFWO-Flanders, 11V8915N ; The authors acknowledge financial support from the European Fund for Regional Development through the cross-border collaborative Interreg V program Flanders-the Netherlands (project EnOp), the Fund for Scientific Research (FWO; Grant Number: G.0254.14N), a TOP-BOF project and an IOF-SBO (SynCO2Chem) project from the University of Antwerp. K. M. B. was funded as a PhD fellow (aspirant) of the FWOFlanders (Fund for Scientific Research-Flanders), Grant 11V8915N. | Approved | Most recent IF: 6.216 | ||
| Call Number | PLASMANT @ plasmant @UA @ admin @ c:irua:159979 | Serial | 5171 | ||
| Permanent link to this record | |||||
| Author |
Uytdenhouwen, Y.; Bal, Km.; Neyts, Ec.; Meynen, V.; Cool, P.; Bogaerts, A. | ||||
| Title | On the kinetics and equilibria of plasma-based dry reforming of methane | Type | A1 Journal article | ||
| Year | 2021 | Publication | Chemical Engineering Journal | Abbreviated Journal | Chem Eng J |
| Volume | 405 | Issue | Pages | 126630 | |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
| Abstract | Plasma reactors are interesting for gas-based chemical conversion but the fundamental relation between the plasma chemistry and selected conditions remains poorly understood. Apparent kinetic parameters for the loss and formation processes of individual components of gas conversion processes, can however be extracted by performing experiments in an extended residence time range (2–75 s) and fitting the gas composition to a firstorder kinetic model of the evolution towards partial chemical equilibrium (PCE). We specifically investigated the differences in kinetic characteristics and PCE state of the CO2 dissociation and CH4 reforming reactions in a dielectric barrier discharge reactor (DBD), how these are mutually affected when combining both gases in the dry reforming of methane (DRM) reaction, and how they change when a packing material (non-porous SiO2) is added to the reactor. We find that CO2 dissociation is characterized by a comparatively high reaction rate of 0.120 s−1 compared to CH4 reforming at 0.041 s−1; whereas CH4 reforming reaches higher equilibrium conversions, 82% compared to 53.6% for CO2 dissociation. Combining both feed gases makes the DRM reaction to proceed at a relatively high rate (0.088 s−1), and high conversion (75.4%) compared to CO2 dissociation, through accessing new chemical pathways between the products of CO2 and CH4. The addition of the packing material can also distinctly influence the conversion rate and position of the equilibrium, but its precise effect depends strongly on the gas composition. Comparing different CO2:CH4 ratios reveals the delicate balance of the combined chemistry. CO2 drives the loss reactions in DRM, whereas CH4 in the mixture suppresses back reactions. As a result, our methodology provides some of the insight necessary to systematically tune the conversion process. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000621197700003 | Publication Date | 2020-08-12 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1385-8947 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 6.216 | Times cited | Open Access | OpenAccess | |
| Notes | The authors acknowledge financial support from the European Fund for Regional Development through the cross-border collaborative Interreg V program Flanders-the Netherlands (project EnOp), the Fund for Scientific Research (FWO; grant number: G.0254.14N), a TOP-BOF project and an IOF-SBO (SynCO2Chem) project from the University of Antwerp. | Approved | Most recent IF: 6.216 | ||
| Call Number | PLASMANT @ plasmant @c:irua:172458 | Serial | 6411 | ||
| Permanent link to this record | |||||
| Author |
Uytdenhouwen, Y.; Hereijgers, J.; Breugelmans, T.; Cool, P.; Bogaerts, A. | ||||
| Title | How gas flow design can influence the performance of a DBD plasma reactor for dry reforming of methane | Type | A1 Journal article | ||
| Year | 2021 | Publication | Chemical Engineering Journal | Abbreviated Journal | Chem Eng J |
| Volume | 405 | Issue | Pages | 126618 | |
| Keywords | A1 Journal article; Engineering sciences. Technology; Laboratory of adsorption and catalysis (LADCA); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT); Applied Electrochemistry & Catalysis (ELCAT) | ||||
| Abstract | DBD plasma reactors are commonly used in a static ‘one inlet – one outlet’ design that goes against reactor design principles for multi-component reactions, such as dry reforming of methane (DRM). Therefore, in this paper we have developed a novel reactor design, and investigated how the shape and size of the reaction zone, as well as gradual gas addition, and the method of mixing CO2 and CH4 can influence the conversion and product com position of DRM. Even in the standard ‘one inlet – one outlet’ design, the direction of the gas flow (i.e. short or long path through the reactor, which defines the gas velocity at fixed residence time), as well as the dimensions of the reaction zone and the power delivery to the reactor, largely affect the performance. Using gradual gas addition and separate plasma activation zones for the individual gases give increased conversions within the same operational parameters, by optimising mixing ratios and kinetics. The choice of the main (pre-activated) gas and the direction of gas flow largely affect the conversion and energy cost, while the gas inlet position during separate addition only influences the product distribution. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000626511800005 | Publication Date | 2020-08-12 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1385-8947 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 6.216 | Times cited | Open Access | OpenAccess | |
| Notes | Interreg; Flanders; FWO; University of Antwerp; The authors acknowledge financial support from the European Fund for Regional Development through the cross-border collaborative Interreg V program Flanders-the Netherlands (project EnOp), the Fund 13 for Scientific Research (FWO; grant number: G.0254.14N), and an IOFSBO (SynCO2Chem) project from the University of Antwerp. | Approved | Most recent IF: 6.216 | ||
| Call Number | PLASMANT @ plasmant @c:irua:170609 | Serial | 6410 | ||
| Permanent link to this record | |||||
| Author |
Uytdenhouwen, Y.; Meynen, V.; Cool, P.; Bogaerts, A. | ||||
| Title | The Potential Use of Core-Shell Structured Spheres in a Packed-Bed DBD Plasma Reactor for CO2 Conversion | Type | A1 Journal article | ||
| Year | 2020 | Publication | Catalysts | Abbreviated Journal | Catalysts |
| Volume | 10 | Issue | 5 | Pages | 530 |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
| Abstract | This work proposes to use core-shell structured spheres to evaluate whether it allows to individually optimize bulk and surface effects of a packing material, in order to optimize conversion and energy efficiency. Different core-shell materials have been prepared by spray coating, using dense spheres (as core) and powders (as shell) of SiO2, Al2O3, and BaTiO3. The materials are investigated for their performance in CO2 dissociation and compared against a benchmark consisting of a packed-bed reactor with the pure dense spheres, as well as an empty reactor. The results in terms of CO2 conversion and energy efficiency show various interactions between the core and shell material, depending on their combination. Al2O3 was found as the best core material under the applied conditions here, followed by BaTiO3 and SiO2, in agreement with their behaviour for the pure spheres. Applying a thin shell layer on the cores showed equal performance between the different shell materials. Increasing the layer thickness shifts this behaviour, and strong combination effects were observed depending on the specific material. Therefore, this method of core-shell spheres has the potential to allow tuning of the packing properties more closely to the application by designing an optimal combination of core and shell. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000546007000092 | Publication Date | 2020-05-11 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 2073-4344 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 3.9 | Times cited | Open Access | ||
| Notes | Interreg, Project EnOp ; Fonds Wetenschappelijk Onderzoek, G.0254.14N ; Universiteit Antwerpen, Project SynCO2Chem ; We want to thank Jasper Lefevre (VITO) for assistance in the development of the coating suspension for the core-shell spheres. | Approved | Most recent IF: 3.9; 2020 IF: 3.082 | ||
| Call Number | PLASMANT @ plasmant @c:irua:169222 | Serial | 6364 | ||
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| Author |
Uytdenhouwen, Y.; Van Alphen, S.; Michielsen, I.; Meynen, V.; Cool, P.; Bogaerts, A. | ||||
| Title | A packed-bed DBD micro plasma reactor for CO 2 dissociation: Does size matter? | Type | A1 Journal article | ||
| Year | 2018 | Publication | Chemical engineering journal | Abbreviated Journal | Chem Eng J |
| Volume | 348 | Issue | Pages | 557-568 | |
| Keywords | A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) | ||||
| Abstract | DBD plasma reactors are of great interest for environmental and energy applications, such as CO2 conversion, but they suffer from limited conversion and especially energy efficiency. The introduction of packing materials has been a popular subject of investigation in order to increase the reactor performance. Reducing the discharge gap of the reactor below one millimetre can enhance the plasma performance as well. In this work, we combine both effects and use a packed-bed DBD micro plasma reactor to investigate the influence of gap size reduction, in combination with a packing material, on the conversion and efficiency of CO2 dissociation. Packing materials used in this work were SiO2, ZrO2, and Al2O3 spheres as well as glass wool. The results are compared to a regular size reactor as a benchmark. Reducing the discharge gap can greatly increase the CO2 conversion, although at a lower energy efficiency. Adding a packing material further increases the conversion when keeping a constant residence time, but is greatly dependent on the material composition, gap and sphere size used. Maximum conversions of 50–55% are obtained for very long residence times (30 s and higher) in an empty reactor or with certain packing material combinations, suggesting a balance in CO2 dissociation and recombination reactions. The maximum energy efficiency achieved is 4.3%, but this is for the regular sized reactor at a short residence time (7.5 s). Electrical characterization is performed to reveal some trends in the electrical behaviour of the plasma upon reduction of the discharge gap and addition of a packing material. | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000434467000055 | Publication Date | 2018-05-03 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 1385-8947 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 6.216 | Times cited | 22 | Open Access | Not_Open_Access: Available from 03.05.2020 |
| Notes | We acknowledge financial support from the European Fund for Regional Development through the cross-border collaborative Interreg V program Flanders-the Netherlands (project EnOp), the Fund for Scientific Research (FWO; Grant Number: G.0254.14N) and an IOF-SBO (SynCO2Chem) project from the University of Antwerp. | Approved | Most recent IF: 6.216 | ||
| Call Number | PLASMANT @ plasmant @c:irua:151238 | Serial | 4956 | ||
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| Author |
Van Everbroeck, T.; Wu, J.; Arenas-Esteban, D.; Ciocarlan, R.-G.; Mertens, M.; Bals, S.; Dujardin, C.; Granger, P.; Seftel, E.M.; Cool, P. | ||||
| Title | ZnAl layered double hydroxide based catalysts (with Cu, Mn, Ti) used as noble metal-free three-way catalysts | Type | A1 Journal article | ||
| Year | 2022 | Publication | Applied clay science | Abbreviated Journal | Appl Clay Sci |
| Volume | 217 | Issue | Pages | 106390 | |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA) | ||||
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| Publisher | Place of Publication | Editor | |||
| Language | Wos | 000795870100004 | Publication Date | 2022-01-02 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0169-1317 | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 5.6 | Times cited | 6 | Open Access | OpenAccess |
| Notes | The authors acknowledge financial support by theEuropean Union’s Horizon 2020 Project Partial-PGMs (H2020-NMP-686086). R-G C. and P.C. acknowledge the FWO-Flanders (project no. G038215N) for financial support. S⋅B and D.A.E thank the financial support of the European Research Council (ERC-CoG-2019 815128). The authors are grateful to Johnson Matthey, UK, for supplying the commercial benchmark catalysts; realnano; sygmaSB | Approved | Most recent IF: 5.6 | ||
| Call Number | EMAT @ emat @c:irua:186956 | Serial | 6955 | ||
| Permanent link to this record | |||||
| Author |
Van Eyndhoven, G.; Batenburg, K.J.; van Oers, C.; Kurttepeli, M.; Bals, S.; Cool, P.; Sijbers, J. | ||||
| Title | Reliable pore-size measurements based on a procedure specifically designed for electron tomography measurements of nanoporous samples | Type | P3 Proceeding | ||
| Year | 2014 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
| Keywords | P3 Proceeding; Electron microscopy for materials research (EMAT); Vision lab; Laboratory of adsorption and catalysis (LADCA) | ||||
| Abstract | |||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | S.l. | Editor | ||
| Language | Wos | Publication Date | 0000-00-00 | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | ISBN | Additional Links | UA library record | ||
| Impact Factor | Times cited | Open Access | |||
| Notes | Approved | Most recent IF: NA | |||
| Call Number | UA @ lucian @ c:irua:124548 | Serial | 2866 | ||
| Permanent link to this record | |||||
| Author |
Van Eyndhoven, G.; Kurttepeli, M.; van Oers, C.J.; Cool, P.; Bals, S.; Batenburg, K.J.; Sijbers, J. | ||||
| Title | Pore REconstruction and Segmentation (PORES) method for improved porosity quantification of nanoporous materials | Type | A1 Journal article | ||
| Year | 2015 | Publication | Ultramicroscopy | Abbreviated Journal | Ultramicroscopy |
| Volume | 148 | Issue | 148 | Pages | 10-19 |
| Keywords | A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab; Laboratory of adsorption and catalysis (LADCA) | ||||
| Abstract | Electron tomography is currently a versatile tool to investigate the connection between the structure and properties of nanomaterials. However, a quantitative interpretation of electron tomography results is still far from straightforward. Especially accurate quantification of pore-space is hampered by artifacts introduced in all steps of the processing chain, i.e., acquisition, reconstruction, segmentation and quantification. Furthermore, most common approaches require subjective manual user input. In this paper, the PORES algorithm POre REconstruction and Segmentation is introduced; it is a tailor-made, integral approach, for the reconstruction, segmentation, and quantification of porous nanomaterials. The PORES processing chain starts by calculating a reconstruction with a nanoporous-specific reconstruction algorithm: the Simultaneous Update of Pore Pixels by iterative REconstruction and Simple Segmentation algorithm (SUPPRESS). It classifies the interior region to the pores during reconstruction, while reconstructing the remaining region by reducing the error with respect to the acquired electron microscopy data. The SUPPRESS reconstruction can be directly plugged into the remaining processing chain of the PORES algorithm, resulting in accurate individual pore quantification and full sample pore statistics. The proposed approach was extensively validated on both simulated and experimental data, indicating its ability to generate accurate statistics of nanoporous materials. | ||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Amsterdam | Editor | ||
| Language | Wos | 000345973000002 | Publication Date | 2014-08-23 | |
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0304-3991; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
| Impact Factor | 2.843 | Times cited | 7 | Open Access | OpenAccess |
| Notes | Colouratom; ECAS_Sara; (ROMEO:green; preprint:; postprint:can ; pdfversion:cannot); | Approved | Most recent IF: 2.843; 2015 IF: 2.436 | ||
| Call Number | c:irua:119083 | Serial | 2672 | ||
| Permanent link to this record | |||||