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Preferential Oxidation of Carbon Monoxide in Excess Hydrogen over Au/Co3O4-CeO2 Catalysts

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【作者】 曾尚红白雪刘源

【Author】 Zeng Shanghong 1, Bai Xue2, Liu Yuan 1* (1. Department of Catalysis Sciences and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, China; 2. School of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010062, China)

【机构】 Department of Catalysis Sciences and Technology School of Chemical Engineering Tianjin University Tianjin 300072 ChinaSchool of Chemical Engineering Inner Mongolia University of Technology Huhhot 010062 ChinaDepartment of Catalysis Sciences and Technology School of Chemical Engineering Tianjin University Tianjin 300072 China

【Abstract】 Au/Co3O4-CeO2 mixed-oxide catalysts were shown experimentally to be highly active and selective for the oxidation of CO in hydrogen-rich mixture. Activity was markedly influenced by the composition of the support, aging temperature and Au-loading temperature. It provided that single-step removal of CO from hydrogen-rich stream both in the absence and presence of CO2 and H2O to a PEMFC tolerant level. It was found that catalytic activity is greatly affected by adding CO2 in the mixture and increased by farther adding H2O. It meants H2O has the effect to rise catalytic activity. Moreover, it shows better stability with reaction time for the preferential CO oxidation.

【关键词】 preferential oxidationCOhydrogengoldCeO2rare earths
【Key words】 preferential oxidationCOhydrogengoldCeO2rare earths
【基金】 ProjectsupportedbytheNationalNaturalScienceFoundationofChina(20263002and20476079)
  • 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2005年06期
  • 【分类号】O643.36
  • 【被引频次】1
  • 【下载频次】56
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