Palladium catalysts supported on novel CexY1-xO washcoats for toluene catalytic combustion
来源期刊：JOURNAL OF RARE EARTHS2008年第4期
论文作者：JIN Lingyun HE Mai HE Jun LUO Mengfei GAO Libiao LU Jiqing
Key words：cordierite honeycomb; CexY1-xO washcoats; palladium; toluene; rare earths;
Abstract: Novel CexY1-xO washcoats adhered on the cordierite honeycomb, used as supports for Pd catalysts, were prepared by an impregnation method. It was found that the CexY1-xO washcoats had better adhesion and higher adsorption efficiency of H2PdCl4, and the optimal component of the washcoat was Ce0.8Y0.2O. Model reaction of catalytic combustion of toluene was chosen to evaluate the performance of the developed Pd/CexY1-xO/substrate catalysts. The results showed that the catalytic performance of the Pd/CexY1-xO/substrate catalysts depended on the component of the washcoats, with the Pd/Ce0.8Y0.2O/ substrate catalyst giving the best catalytic activity and thermal stability.
JIN Lingyun1，HE Mai1，HE Jun1，LUO Mengfei1，GAO Libiao1，LU Jiqing1
(1.Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China)
Abstract:Novel CexY1-xO washcoats adhered on the cordierite honeycomb, used as supports for Pd catalysts, were prepared by an impregnation method. It was found that the CexY1-xO washcoats had better adhesion and higher adsorption efficiency of H2PdCl4, and the optimal component of the washcoat was Ce0.8Y0.2O. Model reaction of catalytic combustion of toluene was chosen to evaluate the performance of the developed Pd/CexY1-xO/substrate catalysts. The results showed that the catalytic performance of the Pd/CexY1-xO/substrate catalysts depended on the component of the washcoats, with the Pd/Ce0.8Y0.2O/ substrate catalyst giving the best catalytic activity and thermal stability.
Key words:cordierite honeycomb; CexY1-xO washcoats; palladium; toluene; rare earths;
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