| Records |
| Author |
Maerivoet, S.; Tsonev, I.; Slaets, J.; Reniers, F.; Bogaerts, A. |
| Title |
Coupled multi-dimensional modelling of warm plasmas: Application and validation for an atmospheric pressure glow discharge in CO2/CH4/O2 |
Type |
A1 Journal Article |
Year  |
2024 |
Publication |
Chemical Engineering Journal |
Abbreviated Journal |
Chemical Engineering Journal |
| Volume |
492 |
Issue |
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Pages |
152006 |
| Keywords |
A1 Journal Article; Plasma, laser ablation and surface modeling Antwerp (PLASMANT) ; |
| Abstract |
To support experimental research into gas conversion by warm plasmas, models should be developed to explain the experimental observations. These models need to describe all physical and chemical plasma properties in a coupled way. In this paper, we present a modelling approach to solve the complete set of assumed relevant equations, including gas flow, heat balance and species transport, coupled with a rather extensive chemistry set, consisting of 21 species, obtained by reduction of a more detailed chemistry set, consisting of 41 species. We apply this model to study the combined CO2 and CH4 conversion in the presence of O2, in a direct current atmospheric pressure glow discharge. Our model can predict the experimental trends, and can explain why higher O2 fractions result in higher CH4 conversion, namely due to the higher gas temperature, rather than just by additional chemical reactions. Indeed, our model predicts that when more O2 is added, the energy required to reach any set temperature (i.e., the enthalpy) drops, allowing the system to reach higher temperatures with similar amounts of energy. This is in turn related to the higher H2O fraction and lower H2 fraction formed in the plasma, as demonstrated by our model. Altogether, our new self-consistent model can capture the main physics and chemistry occurring in this warm plasma, which is an important step towards predictive modelling for plasma-based gas conversion. |
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Place of Publication |
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Wos |
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Publication Date |
2024-05-09 |
| Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1385-8947 |
ISBN |
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Additional Links |
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| Impact Factor |
15.1 |
Times cited |
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Open Access |
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| Notes |
This research was supported by the Excellence of Science FWO-FNRS project (FWO grant ID G0I1822N; EOS ID 40007511) and 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 grant agreement No. 101081162–PREPARE ERC Proof of Concept project). computational resources and services used in this work were provided by the HPC core facility CalcUA of the Universiteit Antwerpen, and VSC (Flemish Supercomputer Center), funded by the Research Foundation – Flanders (FWO) and the Flemish Government. |
Approved |
Most recent IF: 15.1; 2024 IF: 6.216 |
| Call Number |
PLASMANT @ plasmant @ |
Serial |
9132 |
| Permanent link to this record |
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| Author |
Biondo, O.; Hughes, A.; van der Steeg, A.; Maerivoet, S.; Loenders, B.; van Rooij, G.; Bogaerts, A. |
| Title |
Power concentration determined by thermodynamic properties in complex gas mixtures : the case of plasma-based dry reforming of methane |
Type |
A1 Journal article |
| Year |
2023 |
Publication |
Plasma sources science and technology |
Abbreviated Journal |
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| Volume |
32 |
Issue |
4 |
Pages |
045001-45020 |
| Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
| Abstract |
We investigate discharge contraction in a microwave plasma at sub-atmospheric pressure, operating in CO2 and CO2/CH4 mixtures. The rise of the electron number density with plasma contraction intensifies the gas heating in the core of the plasma. This, in turn, initiates fast core-periphery transport and defines the rate of thermal chemistry over plasma chemistry. In this context, power concentration describes the overall mechanism including plasma contraction and chemical kinetics. In a complex chemistry such as dry reforming of methane, transport of reactive species is essential to define the performance of the reactor and achieve the desired outputs. Thus, we couple experimental observations and thermodynamic calculations for model validation and understanding of reactor performance. Adding CH4 alters the thermodynamic properties of the mixture, especially the reactive component of the heat conductivity. The increase in reactive heat conductivity increases the pressure at which plasma contraction occurs, because higher rates of gas heating are required to reach the same temperature. In addition, we suggest that the predominance of heat conduction over convection is a key condition to observe the effect of heat conductivity on gas temperature. |
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Place of Publication |
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Wos |
000963579500001 |
Publication Date |
2023-03-23 |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0963-0252 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
3.8 |
Times cited |
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Open Access |
Not_Open_Access |
| Notes |
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Approved |
Most recent IF: 3.8; 2023 IF: 3.302 |
| Call Number |
UA @ admin @ c:irua:196044 |
Serial |
8397 |
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| Author |
Wanten, B.; Maerivoet, S.; Vantomme, C.; Slaets, J.; Trenchev, G.; Bogaerts, A. |
| Title |
Dry reforming of methane in an atmospheric pressure glow discharge: Confining the plasma to expand the performance |
Type |
A1 Journal article |
| Year |
2022 |
Publication |
Journal Of Co2 Utilization |
Abbreviated Journal |
J Co2 Util |
| Volume |
56 |
Issue |
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Pages |
101869 |
| Keywords |
A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT) |
| Abstract |
We present a confined atmospheric pressure glow discharge plasma reactor, with very good performance towards dry reforming of methane, i.e., CO2 and CH4 conversion of 64 % and 94 %, respectively, at an energy cost of 3.5–4 eV/molecule (or 14–16 kJ/L). This excellent performance is among the best reported up to now for all types of plasma reactors in literature, and is due to the confinement of the plasma, which maximizes the fraction of gas passing through the active plasma region. The main product formed is syngas, with H2O and C2H2 as byproducts. We developed a quasi-1D chemical kinetics model, showing good agreement with the experimental results, which provides a thorough insight in the reaction pathways underlying the conversion of CO2 and CH4 and the formation of the different products. |
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Place of Publication |
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Wos |
000740230000002 |
Publication Date |
2021-12-23 |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
2212-9820 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
| Impact Factor |
7.7 |
Times cited |
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Open Access |
OpenAccess |
| Notes |
Vlaamse regering; European Research Council, 810182 ; Herculesstichting; European Research Council; Horizon 2020 Framework Programme; Universiteit Antwerpen; This project has received funding from 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 through long-term structural funding (Methusalem). 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. Finally, we thank T. Kenis, J. Van den Hoek, and T. Breugelmans from the University of Antwerp, for per forming the liquid analysis. |
Approved |
Most recent IF: 7.7 |
| Call Number |
PLASMANT @ plasmant @c:irua:185163 |
Serial |
6899 |
| Permanent link to this record |
