| Preferential Oxidation of CO in Excess Hydrogen over CuO-CeO2 Catalyst Prepared by Chelating Method |
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| 作者姓名： | Zhigang Liu Renxian Zhou Xiaoming Zheng |
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| 作者单位： | Zhigang Liu，Renxian Zhou，Xiaoming Zheng Institute of Catalysis，Zhejiang University，Hangzhou 310028，Zhejiang，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | The CuO-CeO2 catalyst prepared by chelating method has a superior catalytic performance for the preferential oxidation of CO in rich hydrogen, compared with the CuO-CeO2 catalyst prepared by coprecipitation method. The CO conversions over these catalysts, at 120℃and 120000 ml/(g-h) in the absence of CO2 and H2O, are 99.6% and 88.6%, respectively, and the selectivity of O2 over these catalysts is very close (i.e. 51.3% and 55.8%, respectively). The influence of certain factors such as hydrogen concentration, carbon monoxide concentration, H2O, O2/CO ratios, and space velocity on the catalytic performance of CuO-CeO2 catalyst prepared by chelating method is also studied. The results show that the addition of hydrogen and H2O has a negative effect on the catalytic performance of CuO-CeO2 catalyst, however, the variation of space velocity and the O2/CO ratio causes a comparatively slight influence.
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| 关 键 词： | 螯合方法 优先氧化 氢元素 一氧化碳 |
| 收稿时间： | 4 November 2006 |
| 修稿时间： | 2006-11-042007-01-29 |
Preferential Oxidation of CO in Excess Hydrogen over CuO-CeO2 Catalyst Prepared by Chelating Method |
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| Zhigang Liu Renxian Zhou Xiaoming Zheng.Preferential Oxidation of CO in Excess Hydrogen over CuO-CeO2 Catalyst Prepared by Chelating Method[J].Journal of Natural Gas Chemistry,2007,16(2):167-172. |
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| Authors: | Zhigang Liu Renxian Zhou Xiaoming Zheng |
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| Institution: | aInstitute of Catalysis, Zhejiang University, Hangzhou 310028, Zhejiang, China |
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| Abstract: | The CuO-CeO2 catalyst prepared by chelating method has a superior catalytic performance for the preferential oxidation of CO in rich hydrogen, compared with the CuO-CeO2 catalyst prepared by coprecipitation method. The CO conversions over these catalysts, at 120 ℃ and 120000 ml/(g.h) in the absence of CO2 and H2O, are 99.6% and 88.6%, respectively, and the selectivity of O2 over these catalysts is very close (i.e. 51.3% and 55.8%, respectively). The influence of certain factors such as hydrogen concentration, carbon monoxide concentration, H2O, O2/CO ratios, and space velocity on the catalytic performance of CuO-CeO2 catalyst prepared by chelating method is also studied. The results show that the addition of hydrogen and H2O has a negative effect on the catalytic performance of CuO-CeO2 catalyst,however, the variation of space velocity and the O2/CO ratio causes a comparatively slight influence. |
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| Keywords: | CuO-CeO2 chelating method preferential oxidation CO hydrogen |
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