Records |
Author |
Trenchev, G.; Nikiforov, A.; Wang, W.; Kolev, S.; Bogaerts, A. |
Title |
Atmospheric pressure glow discharge for CO2 conversion : model-based exploration of the optimum reactor configuration |
Type |
A1 Journal article |
Year |
2019 |
Publication |
Chemical engineering journal |
Abbreviated Journal |
Chem Eng J |
Volume |
362 |
Issue |
362 |
Pages |
830-841 |
Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
Abstract |
We investigate the performance of an atmospheric pressure glow discharge (APGD) reactor for CO2 conversion in three different configurations, through experiments and simulations. The first (basic) configuration utilizes the well-known pin-to-plate design, which offers a limited conversion. The second configuration improves the reactor performance by employing a vortex-flow generator. The third, “confined” configuration is a complete redesign of the reactor, which encloses the discharge in a limited volume, significantly surpassing the conversion rate of the other two designs. The plasma properties are investigated using an advanced plasma model. |
Address |
|
Corporate Author |
|
Thesis |
|
Publisher |
|
Place of Publication |
|
Editor |
|
Language |
|
Wos |
000457863500084 |
Publication Date |
2019-01-18 |
Series Editor |
|
Series Title ![sorted by Series Title field, ascending order (up)](img/sort_asc.gif) |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
1385-8947; 1873-3212 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
6.216 |
Times cited |
4 |
Open Access |
Not_Open_Access: Available from 15.10.2019
|
Notes |
|
Approved |
Most recent IF: 6.216 |
Call Number |
UA @ admin @ c:irua:157459 |
Serial |
5269 |
Permanent link to this record |
|
|
|
Author |
Bogaerts, A.; Zhang, Q.-Z.; Zhang, Y.-R.; Van Laer, K.; Wang, W. |
Title |
Burning questions of plasma catalysis: Answers by modeling |
Type |
A1 Journal article |
Year |
2019 |
Publication |
Catalysis today |
Abbreviated Journal |
Catal Today |
Volume |
337 |
Issue |
|
Pages |
3-14 |
Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
Abstract |
Plasma catalysis is promising for various environmental, energy and chemical synthesis applications, but the underlying mechanisms are far from understood. Modeling can help to obtain a better insight in these mechanisms. Some burning questions relate to the plasma behavior inside packed bed reactors and whether plasma can penetrate into catalyst pores. In this paper, we try to provide answers to these questions, by means of both fluid modeling and particle-in-cell/Monte Carlo collision simulations. We present a short overview of recent findings obtained in our group by means of modeling, i.e., the enhanced electric field near the contact points and the streamer propagation through the packing in packed bed reactors, as well as the plasma behavior in catalyst pores, to determine the minimum pore size in which plasma streamers can penetrate. |
Address |
|
Corporate Author |
|
Thesis |
|
Publisher |
|
Place of Publication |
|
Editor |
|
Language |
|
Wos |
000482179500002 |
Publication Date |
2019-04-24 |
Series Editor |
|
Series Title ![sorted by Series Title field, ascending order (up)](img/sort_asc.gif) |
|
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 |
4.636 |
Times cited |
7 |
Open Access |
|
Notes |
University of Antwerp, the European Marie Skłodowska-Curie Individual Fellowships “GlidArc”; “CryoEtch” within Horizon2020, 657304 702604 ;We would like to thank H.-H. Kim for performing experiments to validate the modeling of streamer propagation in packed bed reactors. We acknowledge financial support from the TOP-BOF project of the University of Antwerp, the European Marie Skłodowska-Curie Individual Fellowships “GlidArc” and “CryoEtch” within Horizon2020 (Grant Nos. 657304 and 702604). |
Approved |
Most recent IF: 4.636 |
Call Number |
PLASMANT @ plasmant @c:irua:161775 |
Serial |
5356 |
Permanent link to this record |
|
|
|
Author |
Zhang, Q.-Z.; Wang, W.Z.; Thille, C.; Bogaerts, A. |
Title |
H2S Decomposition into H2 and S2 by Plasma Technology: Comparison of Gliding Arc and Microwave Plasma |
Type |
A1 Journal article |
Year |
2020 |
Publication |
Plasma Chemistry And Plasma Processing |
Abbreviated Journal |
Plasma Chem Plasma P |
Volume |
40 |
Issue |
5 |
Pages |
1163-1187 |
Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
Abstract |
We studied hydrogen sulfide (H2S) decomposition into hydrogen (H2) and sulfur (S2) in a gliding arc plasmatron (GAP) and microwave (MW) plasma by a combination of 0D and 2D models. The conversion, energy efficiency, and plasma distribution are examined for different discharge conditions, and validated with available experiments from literature. Furthermore, a comparison is made between GAP and MW plasma. The GAP operates at atmospheric pressure, while the MW plasma experiments to which comparison is made were performed at reduced pressure. Indeed, the MW discharge region becomes very much contracted near atmospheric pressure, at the conditions under study, as revealed by our 2D model. The models predict that thermal reactions play the most important role in H2S decomposition in both plasma types. The GAP has a higher energy efficiency but lower conversion than the MW plasma at their typical conditions. When compared at the same conversion, the GAP exhibits a higher energy efficiency and lower energy cost than the MW plasma. |
Address |
|
Corporate Author |
|
Thesis |
|
Publisher |
|
Place of Publication |
|
Editor |
|
Language |
|
Wos |
000543012200001 |
Publication Date |
2020-06-24 |
Series Editor |
|
Series Title ![sorted by Series Title field, ascending order (up)](img/sort_asc.gif) |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0272-4324 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
3.6 |
Times cited |
|
Open Access |
|
Notes |
This work was supported by the Scientific Research Foundation from Dalian University of Technology, DUT19RC(3)045. We gratefully acknowledge T. Godfroid (Materia Nova) for sharing the experimental data about the MW plasma. The calculations were performed using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UAntwerpen), a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UAntwerpen. |
Approved |
Most recent IF: 3.6; 2020 IF: 2.355 |
Call Number |
PLASMANT @ plasmant @c:irua:172490 |
Serial |
6409 |
Permanent link to this record |
|
|
|
Author |
Wang, W.; Butterworth, T.; Bogaerts, A. |
Title |
Plasma propagation in a single bead DBD reactor at different dielectric constants : insights from fluid modelling |
Type |
A1 Journal article |
Year |
2021 |
Publication |
Journal Of Physics D-Applied Physics |
Abbreviated Journal |
J Phys D Appl Phys |
Volume |
54 |
Issue |
21 |
Pages |
214004 |
Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
Abstract |
Packed bed dielectric barrier discharge (PB-DBD) plasma reactors are very promising for various plasma catalysis applications, but the exact mechanisms of plasma-catalyst interaction are far from understood, because the plasma discharge and catalyst/packing properties are mutually dependent. To better understand the effect of packing dielectric material on the electrical plasma properties, we study here a single bead DBD plasma reactor operating in dry air, with beads of different dielectric constant and for different applied voltages, by means of fluid modelling validated by optical imaging experiments. Our study reveals that the plasma in the single bead DBD reactor can manifest itself in two different modalities, i.e. (a) polar discharges at the bead poles in contact with the electrodes, and (b) a streamer discharge caused by surface ionization waves, which bridges the gas gap. Beads with high dielectric constant result in localised electric field enhancement and hence yield a reduction of the applied voltage required for plasma production. At low applied voltage, the discharge appears as polar discharges between the bead and the electrodes, and upon higher voltage it undergoes a transition into a bridging streamer discharge. The transition voltage to the streamer mode rises for beads with higher dielectric constant. These observations are important for plasma catalysis applications. A higher dielectric constant yields a higher electric field and thus higher average electron energy and density, giving rise to more reactive species, but it also yields a confined discharge near the contact points of packing beads, limiting the interaction area between the catalyst and the active plasma species. In addition, our model reveals that the dielectric bead behaves as a capacitor and traps charges, which can explain the significant occurrence of partial discharging in PB-DBDs and non-parallelogram shaped Lissajous plots. Hence, equivalent circuit modelling of PB-DBDs should take into account the role of packing beads in charge trapping as a capacitor. |
Address |
|
Corporate Author |
|
Thesis |
|
Publisher |
|
Place of Publication |
|
Editor |
|
Language |
|
Wos |
000626451000001 |
Publication Date |
2021-02-23 |
Series Editor |
|
Series Title ![sorted by Series Title field, ascending order (up)](img/sort_asc.gif) |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0022-3727 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
2.588 |
Times cited |
|
Open Access |
Not_Open_Access |
Notes |
|
Approved |
Most recent IF: 2.588 |
Call Number |
UA @ admin @ c:irua:177571 |
Serial |
6772 |
Permanent link to this record |
|
|
|
Author |
Zhang, L.; Heijkers, S.; Wang, W.; Martini, L.M.; Tosi, P.; Yang, D.; Fang, Z.; Bogaerts, A. |
Title |
Dry reforming of methane in a nanosecond repetitively pulsed discharge: chemical kinetics modeling |
Type |
A1 Journal article |
Year |
2022 |
Publication |
Plasma Sources Science & Technology |
Abbreviated Journal |
Plasma Sources Sci T |
Volume |
31 |
Issue |
5 |
Pages |
055014 |
Keywords |
A1 Journal article; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
Abstract |
Nanosecond pulsed discharge plasma shows a high degree of non-equilibrium, and exhibits relatively high conversions in the dry reforming of methane. To further improve the application, a good insight of the underlying mechanisms is desired. We developed a chemical kinetics model to explore the underlying plasma chemistry in nanosecond pulsed discharge. We compared the calculated conversions and product selectivities with experimental results, and found reasonable agreement in a wide range of specific energy input. Hence, the chemical kinetics model is able to provide insight in the underlying plasma chemistry. The modeling results predict that the most important dissociation reaction of CO<sub>2</sub>and CH<sub>4</sub>is electron impact dissociation. C<sub>2</sub>H<sub>2</sub>is the most abundant hydrocarbon product, and it is mainly formed upon reaction of two CH<sub>2</sub>radicals. Furthermore, the vibrational excitation levels of CO<sub>2</sub>contribute for 85% to the total dissociation of CO<sub>2</sub>. |
Address |
|
Corporate Author |
|
Thesis |
|
Publisher |
|
Place of Publication |
|
Editor |
|
Language |
|
Wos |
000797660000001 |
Publication Date |
2022-05-01 |
Series Editor |
|
Series Title ![sorted by Series Title field, ascending order (up)](img/sort_asc.gif) |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
0963-0252 |
ISBN |
|
Additional Links |
UA library record; WoS full record |
Impact Factor |
3.8 |
Times cited |
|
Open Access |
OpenAccess |
Notes |
China Scholarship Council; National Natural Science Foundation of China, 11965018 ; This work is supported by the National Natural Science Foundation of China (Grant Nos. 52077026, 11965018), L Zhang was also supported by the China Scholarship Council (CSC). Data availability statement The data that support the findings of this study are available upon reasonable request from the authors. |
Approved |
Most recent IF: 3.8 |
Call Number |
PLASMANT @ plasmant @c:irua:188537 |
Serial |
7069 |
Permanent link to this record |
|
|
|
Author |
Wang, W.; Patil, B.; Heijkers, S.; Hessel, V.; Bogaerts, A. |
Title |
Nitrogen Fixation by Gliding Arc Plasma: Better Insight by Chemical Kinetics Modelling |
Type |
A1 Journal Article |
Year |
2017 |
Publication |
Chemsuschem |
Abbreviated Journal |
Chemsuschem |
Volume |
10 |
Issue |
10 |
Pages |
2110-2110 |
Keywords |
A1 Journal Article; Plasma, laser ablation and surface modeling Antwerp (PLASMANT) ; |
Abstract |
The conversion of atmospheric nitrogen into valuable compounds, that is, so-called nitrogen fixation, is gaining increased interest, owing to the essential role in the nitrogen cycle of the biosphere. Plasma technology, and more specifically gliding arc plasma, has great potential in this area, but little is known about the underlying mechanisms. Therefore, we developed a detailed chemical kinetics model for a pulsed-power gliding-arc reactor operating at atmospheric pressure for nitrogen oxide synthesis. Experiments are performed to validate the model and reasonable agreement is reached between the calculated and measured NO and NO2 yields and the corresponding energy efficiency for NOx formation for different N2/O2 ratios, indicating that the model can provide a realistic picture of the plasma chemistry. Therefore, we can use the model to investigate the reaction pathways for the formation and loss of NOx. The results indicate that vibrational excitation of N2 in the gliding arc contributes significantly to activating the N2 molecules, and leads to an energy efficient way of NOx production, compared to the thermal process. Based on the underlying chemistry, the model allows us to propose solutions on how to further improve the NOx formation by gliding arc technology. Although the energy efficiency of the gliding-arc-based nitrogen fixation process at the present stage is not comparable to the world-scale Haber–Bosch process, we believe our study helps us to come up with more realistic scenarios of entering a cutting-edge innovation in new business cases for the decentralised production of fertilisers for agriculture, in which lowtemperature plasma technology might play an important role. |
Address |
|
Corporate Author |
|
Thesis |
|
Publisher |
|
Place of Publication |
|
Editor |
|
Language |
|
Wos |
|
Publication Date |
2017-05-11 |
Series Editor |
|
Series Title ![sorted by Series Title field, ascending order (up)](img/sort_asc.gif) |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
1864-5631 |
ISBN |
|
Additional Links |
|
Impact Factor |
7.226 |
Times cited |
|
Open Access |
Not_Open_Access |
Notes |
This research was supported by the European Marie Skłodowska- Curie Individual Fellowship “GlidArc” within Horizon 2020 (Grant No.657304), by the FWO project (grant G.0383.16 N) and by the EU project MAPSYN: Microwave, Acoustic and Plasma assisted SYNthesis, under the grant agreement no. CP-IP 309376 of the European Community’s Seventh Framework Program. The calculations were performed using the Turing HPC infrastructure at the CalcUA core facility of the Universiteit Antwerpen (UAntwerpen), a division of the Flemish Supercomputer Center VSC, funded by the Hercules Foundation, the Flemish Government (department EWI) and the UAntwerpen. |
Approved |
Most recent IF: 7.226 |
Call Number |
PLASMANT @ plasmant @ |
Serial |
4573 |
Permanent link to this record |
|
|
|
Author |
Bogaerts, A.; Snoeckx, R.; Trenchev, G.; Wang, W. |
Title |
Modeling for a Better Understanding of Plasma-Based CO2 Conversion |
Type |
H1 Book Chapter |
Year |
2018 |
Publication |
Plasma Chemistry and Gas Conversion |
Abbreviated Journal |
|
Volume |
|
Issue |
|
Pages |
|
Keywords |
H1 Book Chapter; Plasma, laser ablation and surface modeling Antwerp (PLASMANT) ; |
Abstract |
This chapter discusses modeling efforts for plasma-based CO2 conversion, which are needed to obtain better insight in the underlying mechanisms, in order to improve this application. We will discuss two types of (complementary) modeling efforts that are most relevant, that is, (i) modeling of the detailed plasma chemistry by zero-dimensional (0D) chemical kinetic models and (ii) modeling of reactor design, by 2D or 3D fluid dynamics models. By showing some characteristic calculation results of both models, for CO2 splitting and in combination with a H-source, and for packed bed DBD and gliding arc plasma, we can illustrate the type of information they can provide. |
Address |
|
Corporate Author |
|
Thesis |
|
Publisher |
IntechOpen |
Place of Publication |
Rijeka |
Editor |
Britun, N.; Silva, T. |
Language |
|
Wos |
|
Publication Date |
2018-12-19 |
Series Editor |
|
Series Title ![sorted by Series Title field, ascending order (up)](img/sort_asc.gif) |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
|
ISBN |
|
Additional Links |
UA library record |
Impact Factor |
|
Times cited |
|
Open Access |
Not_Open_Access |
Notes |
|
Approved |
Most recent IF: NA |
Call Number |
PLASMANT @ plasmant @ Bogaerts18c:irua:155915 |
Serial |
5142 |
Permanent link to this record |
|
|
|
Author |
Zheng, J.; Zhang, H.; Lv, J.; Zhang, M.; Wan, J.; Gerrits, N.; Wu, A.; Lan, B.; Wang, W.; Wang, S.; Tu, X.; Bogaerts, A.; Li, X. |
Title |
Enhanced NH3Synthesis from Air in a Plasma Tandem-Electrocatalysis System Using Plasma-Engraved N-Doped Defective MoS2 |
Type |
A1 Journal Article |
Year |
2023 |
Publication |
JACS Au |
Abbreviated Journal |
JACS Au |
Volume |
3 |
Issue |
5 |
Pages |
1328-1336 |
Keywords |
A1 Journal Article; Plasma, laser ablation and surface modeling Antwerp (PLASMANT) ; |
Abstract |
We have developed a sustainable method to produce NH3 directly from air using a plasma tandem-electrocatalysis system that operates via the N2−NOx−NH3 pathway. To efficiently reduce NO2− to NH3, we propose a novel electrocatalyst consisting of defective N-doped molybdenum sulfide nanosheets on vertical graphene arrays (N-MoS2/VGs). We used a plasma engraving process to form the metallic 1T phase, N doping, and S vacancies in the electrocatalyst simultaneously. Our system exhibited a remarkable NH3 production rate of 7.3 mg h−1 cm−2 at −0.53 V vs RHE, which is almost 100 times higher than the state-of-the-art electrochemical nitrogen reduction reaction and more than double that of other hybrid systems. Moreover, a low energy consumption of only 2.4 MJ molNH3−1 was achieved in this study. Density functional theory calculations revealed that S vacancies and doped N atoms play a dominant role in the selective reduction of NO2− to NH3. This study opens up new avenues for efficient NH3 production using cascade systems. |
Address |
|
Corporate Author |
|
Thesis |
|
Publisher |
|
Place of Publication |
|
Editor |
|
Language |
|
Wos |
000981779300001 |
Publication Date |
2023-05-22 |
Series Editor |
|
Series Title ![sorted by Series Title field, ascending order (up)](img/sort_asc.gif) |
|
Abbreviated Series Title |
|
Series Volume |
|
Series Issue |
|
Edition |
|
ISSN |
2691-3704 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
Impact Factor |
|
Times cited |
|
Open Access |
Not_Open_Access |
Notes |
ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China (51976191, 5227060056, 52276214) and the National Key Technologies R&D Program of China (2018YFE0117300). N.G. was financially supported through an NWO Rubicon Grant (019.202EN.012). X.T. acknowl- edges the support of the Engineering and Physical Sciences Research Council (EP/X002713/1). |
Approved |
Most recent IF: NA |
Call Number |
PLASMANT @ plasmant @c:irua:196761 |
Serial |
8792 |
Permanent link to this record |