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A Study of Modification of Ru/γ-Al_2O_3 Water-Gas Shift Catalyst by Cerium

Liu Wen-di

Abstract

A series of ruthenium-based catalysts were prepared by impregnation. Water-gas shift was selected as the reaction to evaluate the catalytic properties on catalysts. The influence of cerium on Ru/γ-Al_2O_3 catalyst was investigated by XRD, TPR and TPD. The results indicate that the addition of cerium increases the catalytic activity and the numbers of active sites on Ru/γ-Al_2O_3 catalyst, decreases the reduction temperature of Ru/γ-Al_2O_3 catalyst, enhances the adsorption and activation of H_2O on catalyst.

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Key concepts: Catalysis, Cerium, Water-gas shift reaction, Ruthenium, Adsorption, Chemistry, Inorganic chemistry, Cerium oxide