Randomized trial demonstrates improved catalyst stability in nonthermal plasma for enhanced hydrogen production in WGS reactions, suggesting a novel solution to deactivation issues.
Key Points
This research aims to improve the stability of Pt/CeO2 catalysts for the water gas shift reaction by utilizing nonthermal plasma activation.
Examined WGS reactions under both plasma and thermal conditions using 2.0% Pt/CeO2 catalysts.
Conducted in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) to analyze catalyst deactivation.
Performed kinetic analysis to evaluate CO inhibition effects under different temperature conditions.
Under thermal conditions, CO conversion dropped from 34.3% to 21.5% after 30 hours, whereas with NTP, conversion remained stable at ∼34.1%.
NTP activation reduced carbonaceous accumulation on the catalyst surface, maintaining active interfacial sites.
Kinetic analysis confirmed that plasma activation enhances availability of active sites, mitigating CO inhibition even at lower temperatures.