| CO2重整甲烷反应高效稳定Ni/ZrO2催化剂的纳米结构特点 |
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| 引用本文： | 李艳,王玉和,徐柏庆. CO2重整甲烷反应高效稳定Ni/ZrO2催化剂的纳米结构特点[J]. 高等学校化学学报, 2005, 26(7): 1325-1329 |
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| 作者姓名： | 李艳 王玉和 徐柏庆 |
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| 作者单位： | 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 |
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| 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.
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| 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 |
| 文章编号： | 0251-0790(2005)07-1325-05 |
| 收稿时间： | 2004-06-22 |
Nano-structural Characters of Highly Active and Stable Ni/ZrO2 Catalyst for CO2 Reforming of Methane |
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| LI Yan,WANG Yu-He,XU Bo-Qing. Nano-structural Characters of Highly Active and Stable Ni/ZrO2 Catalyst for CO2 Reforming of Methane[J]. Chemical Research In Chinese Universities, 2005, 26(7): 1325-1329 |
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| Authors: | LI Yan WANG Yu-He XU Bo-Qing |
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| Affiliation: | Innovative Catalysis Program, Key Lab of Organic Optoelectronics &; Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China |
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| Abstract: | Ni/ZrO_2 catalysts with different phase compositions and crystal sizes of ZrO_2 nanoparticles were prepared and used to catalyze the methane reforming reaction with CO_2. Catalyst characterizations with XRF, XRD, TEM, TPR and H-2-TPD show that highly active and stable Ni/ZrO_2 catalysts are nanocomposites of comparably sized metallic Ni and ZrO_2 nanoparticles. The phase composition of ZrO_2 in the catalysts has little effect on the catalytic stability. |
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| Keywords: | Nickel catalyst Zirconia Crystal phase composition Nanocomposite catalyst CO_2 reforming of CH_4 |
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