VAN DE STEEG, Alex, Pedro ARSÉNIO NUNES ALEIXO VIEGAS, Ana SILVA, Tom BUTTERWORTH, Alexander VAN BAVEL, Joost SMITS, Paola DIOMEDE, Mauritius VAN DE SANDEN and Gerard VAN ROOIJ. Redefining the Microwave Plasma-Mediated CO2 Reduction Efficiency Limit: The Role of O-CO2 Association. ACS Energy Letters. ACS Publications, 2021, vol. 6, No 8, p. 2876-2881. ISSN 2380-8195. Available from: https://dx.doi.org/10.1021/acsenergylett.1c01206. |
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@article{45567, author = {van de Steeg, Alex and Arsénio Nunes Aleixo Viegas, Pedro and Silva, Ana and Butterworth, Tom and van Bavel, Alexander and Smits, Joost and Diomede, Paola and van de Sanden, Mauritius and van Rooij, Gerard}, article_number = {8}, doi = {http://dx.doi.org/10.1021/acsenergylett.1c01206}, keywords = {Dissociation; Plasma; Power; Kinetics; Quenching}, language = {eng}, issn = {2380-8195}, journal = {ACS Energy Letters}, title = {Redefining the Microwave Plasma-Mediated CO2 Reduction Efficiency Limit: The Role of O-CO2 Association}, url = {https://doi.org/10.1021/acsenergylett.1c01206}, volume = {6}, year = {2021} }
TY - JOUR ID - 45567 AU - van de Steeg, Alex - Arsénio Nunes Aleixo Viegas, Pedro - Silva, Ana - Butterworth, Tom - van Bavel, Alexander - Smits, Joost - Diomede, Paola - van de Sanden, Mauritius - van Rooij, Gerard PY - 2021 TI - Redefining the Microwave Plasma-Mediated CO2 Reduction Efficiency Limit: The Role of O-CO2 Association JF - ACS Energy Letters VL - 6 IS - 8 SP - 2876-2881 EP - 2876-2881 PB - ACS Publications SN - 2380-8195 KW - Dissociation KW - Plasma KW - Power KW - Kinetics KW - Quenching UR - https://doi.org/10.1021/acsenergylett.1c01206 N2 - gt;3500 K) microwave plasma. Raman scattering and chemical kinetics modeling reveal chemistry rates with spatial resolution that explain previously reported peak energy efficiency values of 50%. The necessary product quenching is established by fast transport in the core, at frequencies of 105 s–1, facilitating rapid mass and energy transfer between products and feedstock CO2. Moreover, the resulting chemical nonequilibrium yields additional CO2 dissociation in O–CO2 association, a reaction responsible for up to 45% of CO production. Three different thermal chemistry sets are invoked to qualitatively confirm this picture. It is shown how these lack predictive accuracy in the high gas temperature regime studied, which indicates that new CO2 chemistry rate coefficients are highly desirable. Improving reactor design with the identified enhancement mechanisms in mind can increase efficiency up to the newly defined thermal limit of 70%. ER -
VAN DE STEEG, Alex, Pedro ARSÉNIO NUNES ALEIXO VIEGAS, Ana SILVA, Tom BUTTERWORTH, Alexander VAN BAVEL, Joost SMITS, Paola DIOMEDE, Mauritius VAN DE SANDEN and Gerard VAN ROOIJ. Redefining the Microwave Plasma-Mediated CO2 Reduction Efficiency Limit: The Role of O-CO2 Association. \textit{ACS Energy Letters}. ACS Publications, 2021, vol.~6, No~8, p.~2876-2881. ISSN~2380-8195. Available from: https://dx.doi.org/10.1021/acsenergylett.1c01206.
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