Effect of Metal Oxide Doping into Ce0.5Zr0.5O2 on Catalytic Activity of MnOx/γ-Al2O3/Ce0.45Zr0.45M0.1Ox(M=Y, La, Mn) Honeycomb Catalysts
来源期刊：JOURNAL OF RARE EARTHS2007年第1期
论文作者：Chen Yaoqiang Zhong Junbo Wang Jianli Shen Mei Liu Zhimin Yan Shenghui Gong Maochu Cao Hongyan
Key words：catalytic combustion; ethanol; oxygen storage material; monolithic catalyst; rare earths;
Abstract: This article showed that the catalytic activity of MnOx/γ-Al2O3/Ce0.5Zr0.5O2 monolithic catalyst toward the catalytic combustion of ethanol in a fixed bed reactor could be greatly improved by doping three metal oxides into Ce0.5Zr0.5O2. The catalytic activity of MnOx/γ-Al2O3/Ce0.45Zr0.45M0.1Ox (M=Y, La, Mn) is better than that of MnOx/γ-Al2O3/Ce0.5Zr0.5O2. The order of activity of the catalysts is as follows: MnOx/γ-Al2O3/Ce0.45Zr0.45Y0.1Ox＞MnOx/γ-Al2O3/Ce0.45Zr0.45La0.1Ox＞MnOx/γ-Al2O3/Ce0.45Zr0.45Mn0.1Ox＞MnOx/γ-Al2O3/Ce0.5Zr0.5O2. The influence of the loading amount of manganese oxide in enhancing the catalytic activity of MnOx/γ-Al2O3/Ce0.45Zr0.45Y0.1Ox was investigated. The results showed that when MnO2 loading amount was 10%(mass fraction), the MnOx/Al2O3/Ce0.45Zr0.45Y0.1Ox catalyst recorded the highest activity.
Chen Yaoqiang1，Zhong Junbo1，Wang Jianli1，Shen Mei1，Liu Zhimin1，Yan Shenghui1，Gong Maochu1，Cao Hongyan1
(1.College of Chemistry, Sichuan University, Chengdu 610064, China)
Abstract:This article showed that the catalytic activity of MnOx/γ-Al2O3/Ce0.5Zr0.5O2 monolithic catalyst toward the catalytic combustion of ethanol in a fixed bed reactor could be greatly improved by doping three metal oxides into Ce0.5Zr0.5O2. The catalytic activity of MnOx/γ-Al2O3/Ce0.45Zr0.45M0.1Ox (M=Y, La, Mn) is better than that of MnOx/γ-Al2O3/Ce0.5Zr0.5O2. The order of activity of the catalysts is as follows: MnOx/γ-Al2O3/Ce0.45Zr0.45Y0.1Ox＞MnOx/γ-Al2O3/Ce0.45Zr0.45La0.1Ox＞MnOx/γ-Al2O3/Ce0.45Zr0.45Mn0.1Ox＞MnOx/γ-Al2O3/Ce0.5Zr0.5O2. The influence of the loading amount of manganese oxide in enhancing the catalytic activity of MnOx/γ-Al2O3/Ce0.45Zr0.45Y0.1Ox was investigated. The results showed that when MnO2 loading amount was 10%(mass fraction), the MnOx/Al2O3/Ce0.45Zr0.45Y0.1Ox catalyst recorded the highest activity.
Key words:catalytic combustion; ethanol; oxygen storage material; monolithic catalyst; rare earths;
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