Inhibition of the methane formation during the water gas shift reaction by Sn doping of Co-CeO2 catalysts

C.F. IMBACHI-GAMBA, L. CORNAGLIA, J. MÚNERA; F. MARIÑO

Simposio; 8th Symposium on Hydrogen, Fuel Cells and Advanced Batteries; 2022

15Co/CeSn(X%) catalysts were synthesized and tested in the WGSR reaction at different conditions. The results showed inhibition of reaction methanation during the water gas shift reaction due to the incorporation of Sn. The mate-rial 15Co/CeSn(5%) presented the best catalytic activity at 350°C and 400°C, reaching a 70% of CO conversion after 5 h of reaction and a 100% of hydrogen selectivity. The de-crease in the catalytic activity of the reference material could be associated with the deposition of carbon during the reaction, the deactivation is more significant at 350°C than at 400°C. These results indicate that 15Co/CeSn(5%) material is an interesting alternative for replacing the Fe-Cr catalyst employed in the WGSR at temperatures between 350-400°C.