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| ZtO2晶相形式对Ni-B/ZrO2催化剂CO选择性甲烷化性能的影响 | |
| 引用本文： | 刘其海,廖列文,刘自力,董新法. ZtO2晶相形式对Ni-B/ZrO2催化剂CO选择性甲烷化性能的影响[J]. 中国化学工程学报, 2011, 19(3): 434-438 |
| 作者姓名： | 刘其海 廖列文 刘自力 董新法 |
| 作者单位： | 1. School of Chemistry and Chemical Engineering, ZhongKai University of Agriculture and Engineering, Guangzhou 510225, China;2. School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China;3. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China |
| 基金项目： | Supported by the National Natural Science Foundation of China(21076047); the Natural Science Foundation of Zhongkai University of Agriculture and Engineering(G3100026) |
| 摘 要： | Amorphous Ni-B/ZrO2 catalysts were prepared by coprecipitation-chemical reduction with KBH4 aqueous solution,and various crystalline phase ZrO2(amorphous-ZrO2,tetragonal-ZrO2 and monoclinic-ZrO2) supported Ni-B catalysts were obtained by thermal treatment in 5%H2-N2 stream at different temperature.The effect of ZrO2 polymorphs and the treatment temperature on the catalytic performance for the CO selective methanation were investigated,and the catalysts were characterized by N2 physisorption,Powder X-ray diffraction(XRD), Temperature-Programmed Desorption(CO-TPD and H2-TPD),and Differential Scanning Calorimeter(DSC).The treatment temperature affected strongly the crystalline structure of ZrO2,and the CO methanation activity and selectivity of the Ni-B/ZrO2 catalysts were significantly influenced by the crystalline phase of ZrO2.Of the three forms of ZrO2 polymorphs(amorphou-ZrO2,tetragonal-ZrO2 and monoclinic-ZrO2),the amorphous-ZrO2 supported nickle catalyst showed highest CO methanation activity,attributing in large part to the largest specific surface area and the optimum CO/H2 absorption intensity of the Ni-B/amorphous-ZrO2 catalyst. |
| 关 键 词： | crystalline phase carbon monoxide selective methanation Ni-B/ZrO2 catalyst |
| 收稿时间： | 2010-12-29 |
| 修稿时间： | 2010-12-29 |
Effect of ZrO2 crystalline phase on the performance of Ni-B/ZrO2 catalyst for the CO selective methanation |
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| LIU Qihai,LIAO Liewen,LIU Zili,DONG Xinfa. Effect of ZrO2 crystalline phase on the performance of Ni-B/ZrO2 catalyst for the CO selective methanation[J]. Chinese Journal of Chemical Engineering, 2011, 19(3): 434-438 | |
| Authors: | LIU Qihai LIAO Liewen LIU Zili DONG Xinfa |
| Affiliation: | School of Chemistry and Chemical Engineering, ZhongKai University of Agriculture and Engineering, Guangzhou 510225, China;School of Chemistry and Chemical Engineering, ZhongKai University of Agriculture and Engineering, Guangzhou 510225, China |
| Abstract: | Amorphous Ni-B/ZrO2 catalysts were prepared by coprecipitation-chemical reduction with KBH4 aqueous solution, and various crystalline phase ZrO2 (amorphous-ZrO2, tetragonal-ZrO2 and monoclinic-ZrO2) supported Ni-B catalysts were obtained by thermal treatment in 5%H2-N2 stream at different temperature. The effect of ZrO2 polymorphs and the treatment temperature on the catalytic performance for the CO selective methanation were investigated, and the catalysts were characterized by N2 physisorption, Powder X-ray diffraction (XRD), Temperature-Programmed Desorption (CO-TPD and H2-TPD), and Differential Scanning Calorimeter (DSC). The treatment temperature affected strongly the crystalline structure of ZrO2, and the CO methanation activity and selectivity of the Ni-B/ZrO2 catalysts were significantly influenced by the crystalline phase of ZrO2. Of the three forms of ZrO2 polymorphs (amorphou-ZrO2, tetragonal-ZrO2 and monoclinic-ZrO2), the amorphous-ZrO2 supported nickle catalyst showed highest CO methanation activity, attributing in large part to the largest specific surface area and the optimum CO/H2 absorption intensity of the Ni-B/amorphous-ZrO2 catalyst. |
| Keywords: | crystalline phase carbon monoxide selective methanation Ni-B/ZrO2 catalyst |
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