CO2 splitting by DBD: understanding the influence of electrical parameters and regimes

TL;DR

This paper investigates how different electrical parameters and regimes affect CO2 splitting efficiency in a dielectric barrier discharge plasma, providing insights into optimizing plasma-based CO2 conversion processes.

Contribution

It offers a detailed experimental analysis of the influence of frequency, power, and electrical regimes on CO2 splitting in atmospheric pressure plasma.

Findings

Higher frequency improves CO2 conversion efficiency.

Pulsed AC regimes enhance energy efficiency.

Temperature correlations reveal optimal operational conditions.

Abstract

Plasma processes are an innovative approach for the decomposition of CO2 in O radicals and CO as a valuable carbon source. In this experimental work, a tubular dielectric barrier discharge operating at atmospheric pressure has been used to split CO2 and study its conversion considering the influence of frequency and power, as well as the influence of various electrical regimes (AC, AC pulsed regimes). The CO2 conversion has been measured by mass spectrometry and gas chromatography while gas and walls temperatures have been determined and correlated to evaluate their influence of the CO2 splitting.