| Effect of Ni Loading and CexZr1-xO2 Promoter on Ni-Based SBA-15 Catalysts for Steam Reforming of Methane |
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| 作者姓名： | Huijun Wan Xiujin Li Shengfu Ji Bingyao Huang Kai Wang Chengyue Li |
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| 作者单位： | Huijun Wan，Xiujin Li，Shengfu Ji，Bingyao Huang，Kai Wang，Chengyue Li State Key Laboratory of Chemical Resource Engineering，Beijing University of Chemical Technology，Beijing 100029，China; Department of Environmental Engineering，Beijing University of Chemical Technology，Beijing 100029，China |
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| 基金项目： | 国家自然科学基金，北京市自然科学基金，国家重点基础研究发展计划(973计划)，国家高技术研究发展计划(863计划) |
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| 摘 要： | A series of Ni/SBA-15 catalysts with Ni contents ranging from 5wt% to 20wt% as well as 10wt%Ni/10wt?xZn-xO2/SBA-15 (z=0, 0.5, 1) were prepared. The structures of the catalysts were characterized using XRD, TPR, TEM and BET techniques. The catalytic activities of the catalysts for steam reforming of methane were evaluated in a continuous flow microreactor. The results indicated that both the Ni/SBA-15 and the Ni/CexZr1-xO2/SBA-15 catalysts had good catalytic activities at atmospheric pressure. The 10wt%Ni/SBA-15 catalyst exhibited excellent stability at 800癈 for time on stream of 740 h. After the reaction, carbon deposits were not formed on the surface of the catalyst. There existed a regular hexagonal mesoporous structure in the Ni/SBA-15 and the Ni/CexZr1-xO2/SBA-15 catalysts. The nickel species and the CexZr1-xO2 component were all confined in the SBA-15 mesopores. The CexZr1-xO2 could promote dispersion of the nickel species in the Ni/CexZr1-xO2/SBA-15 catalysts.
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| 关 键 词： | 镍基催化剂 甲烷 蒸汽重整 煤气 |
| 收稿时间： | 16 January 2007 |
| 修稿时间： | 2007-01-162007-04-06 |
Effect of Ni Loading and CexZr1-xO2 Promoter on Ni-Based SBA-15 Catalysts for Steam Reforming of Methane |
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| Huijun Wan Xiujin Li Shengfu Ji Bingyao Huang Kai Wang Chengyue Li.Effect of Ni Loading and CexZr1-xO2 Promoter on Ni-Based SBA-15 Catalysts for Steam Reforming of Methane[J].Journal of Natural Gas Chemistry,2007,16(2):139-147. |
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| Authors: | Huijun Wan Xiujin Li Shengfu Ji Bingyao Huang Kai Wang Chengyue Li |
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| Institution: | aState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;bDepartment of Environmental Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | A series of Ni/SBA-15 catalysts with Ni contents ranging from 5wt% to 20wt% as well
as 10wt%Ni/10wt%CexZr1-xO2/SBA-15 (x=0, 0.5, 1) were prepared. The structures of the catalysts
were characterized using XRD, TPR, TEM and BET techniques. The catalytic activities of the catalysts
for steam reforming of methane were evaluated in a continuous flow microreactor. The results indicated
that both the Ni/SBA-15 and the Ni/CexZr1-xO2/SBA-15 catalysts had good catalytic activities at atmospheric
pressure. The 10wt%Ni/SBA-15 catalyst exhibited excellent stability at 800 ℃ for time on
stream of 740 h. After the reaction, carbon deposits were not formed on the surface of the catalyst. There
existed a regular hexagonal mesoporous structure in the Ni/SBA-15 and the Ni/CexZr1-xO2/SBA-15 catalysts.
The nickel species and the CexZr1-xO2 component were all confined in the SBA-15 mesopores.
The CexZr1-xO2 could promote dispersion of the nickel species in the Ni/CexZr1-xO2/SBA-15 catalysts. |
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| Keywords: | Ni-based catalyst SBA-15 methane steam reforming syngas |
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