Publication
Title
Supersonic microwave plasma : potential and limitations for energy-efficient $\left[CO_{2}\right]$ conversion
Author
Abstract
 Supersonic flows provide a high thermodynamic nonequilibrium, which is crucial for energy-efficient conversion of CO2 in microwave plasmas and are therefore of great interest. However, the effect of the flow on the chemical reactions is poorly understood. In this work, we present a combined flow and plasma chemical kinetics model of a microwave CO2 plasma in a Laval nozzle setup. The effects of the flow field on the different dissociation and recombination mechanisms, the vibrational distribution, and the vibrational transfer mechanism are discussed. In addition, the effect of experimental parameters, like position of power deposition, outlet pressure, and specific energy input, on the CO2 conversion and energy efficiency is examined. The short residence time of the gas in the plasma region, the shockwave, and the maximum critical heat, and thus power, that can be added to the flow to avoid thermal choking are the main obstacles to reaching high energy efficiencies.
Language
English
Source (journal)
The journal of physical chemistry: C : nanomaterials and interfaces. - Washington, D.C., 2007, currens
Publication
Washington, D.C. : 2018
ISSN
1932-7447 [print]
1932-7455 [online]
Volume/pages
122 :45 (2018) , p. 25869-25881
ISI
000451101400016
Full text (Publisher's DOI)
Full text (open access)
Full text (publisher's version - intranet only)
UAntwerpen
 Faculty/Department Research group Project info Modeling and experimental validation of a gliding arc discharge: Comparison of a classical and a plasmatron gliding arc. Publication type Subject Affiliation Publications with a UAntwerp address