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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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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, 2014, 42(5): 603-608. shu
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(5): 603-608. shu

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

    通讯作者: 白雪,教授,E-mail:bai_xue@imut.edu.cn。
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。

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  • 收稿日期:  2013-12-16
  • 网络出版日期:  2014-02-24
通讯作者: 陈斌, bchen63@163.com
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