H_2 production from a single stage water-gas shift reaction over Pt/CeO_2, Pt/ZrO_2, and Pt/Ce_(1_X)Zr_(X)O_2 catalysts

摘要

To develop a single stage water-gas shift reaction (WGS) catalyst for compact reformers, Pt/CeO_2, Pt/ZrO_2, and Pt/Ce_(1_x)Zr_(x)O_2 catalysts have been applied for the target reaction. The CeO_2/ZrO_2 ratio was systematically varied to optimize Pt/Ce_(1_x)Zr_(x)0_2 catalysts. Pt/ CeO_2 showed the highest turnover frequency (TOF) and the lowest activation energy (Ea among the catalysts tested in this study. It has been found that the reduction property of the catalyst is more important than the dispersion for a single stage WGS. Pt/CeO_2 catalyst also showed stable catalytic performance. Thus, Pt/CeO_2 can be a promising catalyst for a single stage WGS for compact reformers.