高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (7): 1325.

• 研究论文 • 上一篇    下一篇

CO2重整甲烷反应高效稳定Ni/ZrO2催化剂的纳米结构特点

李艳, 王玉和, 徐柏庆   

  1. 清华大学化学系有机光电子与分子工程教育部重点实验室, 分子催化与定向转化研究室 北京100084
  • 收稿日期:2004-06-22 出版日期:2005-07-10 发布日期:2005-07-10
  • 通讯作者: 徐柏庆(1961年出生),男,博士,教授,博士生导师,从事多相催化研究.E-mail:bqxu@mail.tsinghua.edu.Cn E-mail:bqxu@mail.tsinghua.edu.Cn
  • 基金资助:

    国家自然科学基金(批准号:20125035和20590360)资助.

Nano-structural Characters of Highly Active and Stable Ni/ZrO2 Catalyst for CO2 Reforming of Methane

LI Yan, WANG Yu-He, XU Bo-Qing   

  1. Innovative Catalysis Program, Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
  • Received:2004-06-22 Online:2005-07-10 Published:2005-07-10

摘要: 分别通过在常压流动N2气中加热处理ZrO(OH)2醇凝胶和在空气中焙烧ZrO(OH)2水凝胶制备了含不同晶相组成和不同尺寸ZrO2纳米粒子的Ni/ZrO2催化剂.Ni/ZrO2催化剂上CO2重整CH4反应的活性和稳定性以及多种催化剂表征(XRD,TEM,TPR及TPD等)数据表明,高效稳定的Ni/ZrO2催化剂必须具有“金属/氧化物”纳米复合物的特征.ZrO2纳米粒子的晶相组成对CO2重整甲烷反应中纳米复合物型Ni/ZrO2催化剂的稳定性没有明显影响.

关键词: Ni催化剂, 氧化锆, 晶相组成, 纳米复合物催化剂, CO2重整甲烷

Abstract: Ni/ZrO2 catalysts with different phase compositions and crystal sizes of ZrO2 nanoparticles were prepared and used to catalyze the methane reforming reaction with CO2. Catalyst characterizations with XRF, XRD, TEM, TPR and H2-TPD show that highly active and stable Ni/ZrO2 catalysts are nanocomposites of comparably sized metallic Ni and ZrO2 nanoparticles. The phase composition of ZrO2 in the catalysts has little effect on the catalytic stability.

Key words: Nickel catalyst, Zirconia, Crystal phase composition, Nanocomposite catalyst, CO2 reforming of CH4

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