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.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name Redefining the Microwave Plasma-Mediated CO2 Reduction Efficiency Limit: The Role of O-CO2 Association
Authors 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.
Edition ACS Energy Letters, ACS Publications, 2021, 2380-8195.
Other information
Original language English
Type of outcome Article in a journal
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
WWW URL
Organization Přírodovědecká fakulta – Repository – Repository
Doi http://dx.doi.org/10.1021/acsenergylett.1c01206
UT WoS 000686077800027
Keywords in English Dissociation; Plasma; Power; Kinetics; Quenching
Changed by Changed by: RNDr. Daniel Jakubík, učo 139797. Changed: 14/9/2021 02:12.
Abstract
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%.
Print
Add to clipboard Displayed: 3/5/2024 10:49