The Library
Effect of temperature on CO2 splitting rate in a DBD microreactor
Tools
Khunda, Deema, Li, Sirui, Cherkasov, Nikolay, Rishard, Mohamed Z. M., Chaffee, Alan L. and Rebrov, Evgeny (2023) Effect of temperature on CO2 splitting rate in a DBD microreactor. Reaction Chemistry & Engineering, 8 (9). pp. 2223-2233. doi:10.1039/D3RE00113J ISSN 2058-9883.
|
PDF
WRAP-temperature-CO2-splitting-rate-DBD-microreactor-Rebrov-2023.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2093Kb) | Preview |
Official URL: https://doi.org/10.1039/D3RE00113J
Abstract
A novel plate-to-plate dielectric barrier discharge microreactor (micro DBD) has been demonstrated in CO2 splitting. In this design, the ground electrode has a cooling microchannel to maintain the electrode temperature in the 263-298 K range during plasma operation. A small gap size between the electrodes of 0.50 mm allowed efficient heat transfer from the surrounding plasma to the ground electrode surface to compensate for heat released in the reaction zone and maintain a
constant temperature. The effect of temperature on CO2 conversion and energy efficiency was studied at a voltage of 6-9 kV, a frequency of 60 kHz and a constant CO2 flow rate of 20 ml min-1. The CO2 decomposition rate first increased and then decreased as the electrode temperature decreased from 298 to 263 K with a maximum rate observed at 273 K. Operation at lower temperatures enhanced the vibrational dissociation of CO2 molecule as opposed to electronic excitation which is the main mechanism at room temperature in conventional DBD reactors, however it also reduced the rate of elementary reaction steps. The counterplay between these two effects leads to a maximum in the reaction rate. The power consumption
monotonously increased as the temperature decreased. The effective capacitance of the reactor increased by 1.5 times at 263 K as compared to that at 298 K changing the electric field distribution inside the plasma zone.
Item Type: | Journal Article | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TP Chemical technology |
||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||
Library of Congress Subject Headings (LCSH): | Carbon sequestration, Plasma (Ionized gases), Electric discharges | ||||||||||||
Journal or Publication Title: | Reaction Chemistry & Engineering | ||||||||||||
Publisher: | Royal Society of Chemistry | ||||||||||||
ISSN: | 2058-9883 | ||||||||||||
Official Date: | 1 September 2023 | ||||||||||||
Dates: |
|
||||||||||||
Volume: | 8 | ||||||||||||
Number: | 9 | ||||||||||||
Page Range: | pp. 2223-2233 | ||||||||||||
DOI: | 10.1039/D3RE00113J | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Date of first compliant deposit: | 18 May 2023 | ||||||||||||
Date of first compliant Open Access: | 18 May 2023 | ||||||||||||
Grant number: | 810182 | ||||||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year