CO2 Hydrogenation Using Nonthermal Plasma: Effects of Packed Beds on Plasma Discharge Behavior
Sathya M. Perera, Berkay Ekinci, Sven G. Bilén, Sean D. Knecht, Gina Noh
TL;DR
This study explores how different materials affect CO2 conversion using nonthermal plasma, finding that material choice significantly impacts performance.
Contribution
The study systematically evaluates the influence of dielectric supports on plasma discharge behavior during CO2 hydrogenation.
Findings
Al2O3 achieved the highest CO2 conversion at 42% under specific plasma conditions.
CeO2 showed low CO2 conversion due to diffuse discharge behavior.
Particle size had minimal effect on CO2 conversion for CeO2 beds.
Abstract
Nonthermal plasma-assisted catalysis offers a promising approach to activate strong chemical bonds such as those in CO2 and transform such stable molecules into value-added products under ambient conditions. Advancement in this field requires building upon understanding of plasma–catalyst interactions that dictate product selectivity, conversion, and energy efficiency. This study aims to systematically assess how different dielectric supports influence plasma discharge behavior and reactor performance during CO2 hydrogenation in a dielectric barrier discharge reactor. The dielectric constant of the packing material strongly influences discharge behavior and, consequently, catalytic activity. Among the materials examined, Al2O3 exhibited the highest CO2 conversion of 42% at a plasma power of 23 W, whereas CeO2 yielded the lowest (∼5%) due to the formation of a diffuse discharge, in…
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Taxonomy
TopicsPlasma Applications and Diagnostics · Catalysts for Methane Reforming · Plasma Diagnostics and Applications