高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (12): 2235.

• 论文 • 上一篇    下一篇

Fe2O3/YSZ-γ-Al2O3催化剂在甲烷催化燃烧中的催化性能研究

李丽娜, 陈耀强, 龚茂初, 向云   

  1. 四川大学化学学院, 成都 610064
  • 收稿日期:2003-01-04 出版日期:2003-12-24 发布日期:2003-12-24
  • 通讯作者: 龚茂初(1951年出生),男,教授,从事催化剂研究.E-mail:abbysophy@163.net E-mail:abbysophy@163.net
  • 基金资助:

    国家重点基础研究发展规划项目(批准号:G1999022407)资助

Catalytic Activity of Fe2O3/YSZ-γ-Al2O3for Methane Combustion

LI Li-Na, CHEN Yao-Qiang, GONG Mao-Chu, XIANG Yun   

  1. College of Chemistry, Sichuan University, Chengdu 610064, China
  • Received:2003-01-04 Online:2003-12-24 Published:2003-12-24

摘要: 以Fe2O3为活性组分,γ-Al2O3,ZrO2-γ-Al2O3及YSZ-γ-Al2O3(YSZ是用Y2O3稳定ZrO2的催化剂载体)为载体,制备了3种甲烷燃烧催化剂.其中以YSZ-γ-Al2O3为载体的催化剂催化性能最好.XPS检测发现,ZrO2和Y2O3的存在可以增加和稳定Fe2O3的表面浓度,同时也可减弱Fe2O3与γ-Al2O3之间的相互作用.Fe2O3质量分数为10%的Fe2O3/YSZ-γ-Al2O3催化剂具有最佳的催化活性.XRD测试结果表明,该催化剂的活性与Fe2O3在载体上的分散状况有关.

关键词: 甲烷燃烧催化剂, YSZ-&gamma, -Al2O3载体, XPS, XRD

Abstract: Catalysts for methane combustion were prepared by Fe2O3supported on γ-Al 2O3, ZrO2-γ-Al2O3, YSZ(Yttria stabilize Zirconia)-γ-Al2O3, respectively. Among the three kinds of catalysts, Fe2O3/YSZ-γ-Al2O3show the highest activity and best thermal stability. XPS result demonstrates that the addition of ZrO2and Y2O3can increase and stabilize the surface concentration of Fe2O3and decrease the interaction between iron species and γ-Al2O3support. Fe2O3/YSZ-γ-Al2O3catalyst with a mass fraction of Fe2O310% has the highest catalytic activity. XRD result indicate that the catalytic activity is related to the state of Fe2O3dispersion on the support.

Key words: Catalyts for methane combustion, YSZ-γ-Al2O3support, XPS, XRD

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