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表面活性剂模板法制备CeO2/CuO催化剂用于富氢气氛中CO优先氧化

樊祺源,  白雪,  曾尚红

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文章导航 > 燃料化学学报（中英文）  > 2014 >  42(05): 603-608
樊祺源, 白雪, 曾尚红. 表面活性剂模板法制备CeO2/CuO催化剂用于富氢气氛中CO优先氧化[J]. 燃料化学学报（中英文）, 2014, 42(05): 603-608.
引用本文: 樊祺源, 白雪, 曾尚红. 表面活性剂模板法制备CeO2/CuO催化剂用于富氢气氛中CO优先氧化[J]. 燃料化学学报（中英文）, 2014, 42(05): 603-608.
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FAN Qi-yuan, BAI Xue, ZENG Shang-hong. CeO2/CuO catalysts prepared by surfactant-template method for preferential CO oxidation in H2-rich stream[J]. Journal of Fuel Chemistry and Technology, 2014, 42(05): 603-608.
Citation: FAN Qi-yuan, BAI Xue, ZENG Shang-hong. CeO2/CuO catalysts prepared by surfactant-template method for preferential CO oxidation in H2-rich stream[J]. Journal of Fuel Chemistry and Technology, 2014, 42(05): 603-608.
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表面活性剂模板法制备CeO2/CuO催化剂用于富氢气氛中CO优先氧化

  • 1.

    内蒙古工业大学 化工学院, 内蒙古 呼和浩特 010051;

  • 2.

    内蒙古大学 化学化工学院, 内蒙古 呼和浩特 010021

详细信息
    通讯作者:

    白雪，教授，E-mail：bai_xue@imut.edu.cn。

  • 中图分类号: O643

CeO2/CuO catalysts prepared by surfactant-template method for preferential CO oxidation in H2-rich stream

  • 1.

    School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;

  • 2.

    School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China

    摘要
  • 摘要: 采用表面活性剂模板法合成了一组不同配比的CeO2/CuO催化剂，使用高分辨透射电子显微镜（HRTEM）、X射线粉末衍射（XRD）、N2吸附脱附和程序升温还原（H2-TPR）等测试手段对催化剂进行了表征，并对其在富氢气氛中CO优先氧化的催化性能进行了研究。结果表明，立方相萤石结构的氧化铈颗粒粒径在4 nm左右，它们聚集成小簇后分散在块状氧化铜的表面；从粒径分布来看所制备的催化剂是逆负载型催化剂。催化性能测试结果显示，CeO2/CuO催化剂中有两种类型吸附位的存在，即由CuO提供的化学吸附位和由氧化铈提供的氧空位，而界面处两种类型吸附位的共存促进了CO的优先氧化。
    Abstract: A series of CeO2/CuO catalysts were prepared by surfactant-template method and characterized by high resolution transmission electron microscope (HRTEM), X-ray diffraction (XRD), temperature-programmed reduction (H2-TPR) and N2 sorption; their catalytic performance for preferential oxidation of CO (CO-PROX) in H2-rich stream was investigated. The results show that the 4 nm CeO2 particles with cubic fluorite structure are agglomerated into small clusters and dispersed on the bulk CuO; CeO2/CuO may belong to a type of reverse supported catalyst on the basis of particle size distribution. There are two kinds of active sites in the CeO2/CuO system, i.e. the CuO sites for CO chemisorption and the CeO2 sites supplying oxygen vacancies; the coexistence of two-kind surface sites on the contact interface is capable of promoting the preferential oxidation of CO.
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    • 参考文献(20)
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出版历程
  • 收稿日期:  2013-12-16
  • 修回日期:  2014-02-24
  • 刊出日期:  2014-05-30

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