High CO2 conversion via plasma assisted reverse water-gas shift reaction over Ag/ZnO catalyst

Abstract

Reverse water-gas shift reaction represents a strategic pathway for CO2 utilization. Despite its potential, reverse water-gas shift reaction via conventional thermal-catalysis faces several challenges, including low equilibrium conversion rates due to thermodynamic constraints, high energy consumption, and insufficient product selectivity. Here, this study demonstrates an evident synergetic effect between plasma and Ag/ZnO, on enhancing reverse water-gas shift reaction. The plasma catalytic system achieved significantly improved performance with a remarkable CO2 conversion rate of 76.5%, a high CO selectivity of 96.8% and a CO yield of 74.1%, along with an energy efficiency as high as 0.19 m..