CO <sub>2</sub> conversion, utilisation and valorisation in gliding arc plasma reactors
Jinglin Liu, Xue Wang, Xiao‐Song Li, Blaž Likozar, Ai‐Min Zhu
Abstract
Abstract CO 2 conversion with renewable power is gaining increasing interest to solve the current energy and environmental issues. Plasma is a very promising technology because it supplies a non-thermal condition for CO 2 activation and can easily be connected tointermittent renewable electricity. Gliding arc (GA) plasma in all types of plasmas has the most potential for practical applications of plasma-based CO 2 conversion because it operates at atmospheric pressure and reaches a high energy efficiency. However, GA technology is not mature yet and the CO 2 conversion in the GA plasmas are still too low. So far, the existing GA reactors still need to be developed and improved. The physical and chemical mechanism and the most efficient conversion route of CO 2 in GA are still not clear enough. To further improve the GA-based CO 2 conversion, the state-of-the-art technology is reviewed to know the technology development has been made and limitations need to be overcome. This paper overviews the arc behaviors and GA plasma parameters, and addresses standard definitions and the reliable analysis method for evaluating plasma-based CO 2 conversion. In addition, the GA reactor development, the gas conversion performance of GA, the effect of conditional parameters and the reaction mechanism for CO 2 conversion in GA plasma were discussed.