| Additive effects of alkaline-earth metals and nickel on the performance of Co/γ-Al_2O_3 in methane catalytic partial oxidation |
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| 作者单位： | Changlin Yu,Qing Shu,Xiangjie Meng,Bin Zhang,Xirong Chen,Xiaochun Zhou(School of Materials and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China);Weizheng Weng(State Key Laboratory of Physical Chemistry of Solid Surfaces,Department of Chemistry,Xiamen University,Xiamen 361005,Fujian,China) |
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| 基金项目： | Xiamen University，the Natural Science Foundation of Jiangxi Province，the National Natural Science Foundation of China，the Young Science Foundation of Jiangxi Province Education Office |
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| 摘 要： | Nano-sized γ-alumina (γ-Al2O3) was first prepared by a precipitation method. Then, active component of cobalt and a series of alkaline- earth metal promoters or nickel (Ni) with different contents were loaded on the γ-Al2O3 support. The catalysts were characterized by N2 adsorption-desorption, X-ray diffraction (XRD) and thermogravimetry analysis (TGA). The activity and selectivity of the catalysts in catalytic partial oxidation (CPO) of methane have been compared with Co/γ-Al2O3, and it is found that the catalytic activity, selectivity, and stability are enhanced by the addition of alkaline-earth metals and nickel. The optimal loadings of strontium (Sr) and Ni were 6 and 4 wt%, respectively. This finding will be helpful in designing the trimetallic Co-Ni-Sr/γ-Al2O3 catalysts with high performance in CPO of methane.
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| 关 键 词： | alkaline-earth metal cobalt-based catalyst γ-alumina catalytic partial oxidation methane |
| 收稿时间： | 2010-11-07 |
| 修稿时间： | 2010-12-21 |
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