| 介孔炭的孔结构对其负载的Ru基氨合成催化剂性能的影响 |
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| 引用本文： | 周亚萍,蓝国钧,周斌,姜维,韩文锋,刘化章,李瑛. 介孔炭的孔结构对其负载的Ru基氨合成催化剂性能的影响[J]. 催化学报, 2013, 34(7): 1395-1401. DOI: 10.1016/S1872-2067(12)60596-8 |
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| 作者姓名： | 周亚萍 蓝国钧 周斌 姜维 韩文锋 刘化章 李瑛 |
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| 作者单位： | 浙江工业大学工业催化研究所, 浙江杭州 310032 |
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| 基金项目： | 国家自然科学基金(20803064);浙江省自然科学基金(Y4090348)~~ |
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| 摘 要： | 采用模板法合成了介孔炭(MC),研究了其孔结构对其负载的Ru基氨合成催化剂Ba-Ru-K/MC性能的影响,采用N2吸附脱附、扫描电镜和透射电镜等手段对介孔炭的孔结构进行了表征.研究发现,介孔炭载体的孔结构取决于模板剂的用量,当SiO2/C质量比为1.0时,所制介孔炭比表面积最大.介孔炭负载的Ba-Ru-K催化剂活性与其介孔比表面积相关.在425℃,10MPa和10000h-1条件下,合成氨的反应速率为139mmol/(gcat·h).
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| 关 键 词： | 介孔炭 钌基催化剂 高比表面积 孔结构 氨合成 |
| 收稿时间： | 2013-01-24 |
Effect of pore structure of mesoporous carbon on its supported Ru catalysts for ammonia synthesis |
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| ZHOU Yaping, LAN Guojun, ZHOU Bin, JIANG Wei, HAN Wenfeng, LIU Huazhang, LI Ying. Effect of pore structure of mesoporous carbon on its supported Ru catalysts for ammonia synthesis[J]. Chinese Journal of Catalysis, 2013, 34(7): 1395-1401. DOI: 10.1016/S1872-2067(12)60596-8 |
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| Authors: | ZHOU Yaping LAN Guojun ZHOU Bin JIANG Wei HAN Wenfeng LIU Huazhang LI Ying |
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| Affiliation: | Institute of Industrial Catalysis, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, China |
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| Abstract: | Mesoporous carbon (MC) was prepared by a hard-template method and used as support for the preparation of a Ru-based ammonia synthesis catalyst, Ba-Ru-K/MC. N2 adsorption-desorption, scanning electron microscopy, and transmission electron microscopy were used to characterize the mesoporous carbon and its supported Ru catalysts. The effects of pore structure of the Ba-Ru-K/MC catalyst on its performance for ammonia synthesis were studied. The results show that the surface area of the mesoporous carbon material varies with the SiO2/C mass ratio and reaches the largest at 1.0 of SiO2/C. The catalytic activity of Ba-Ru-K/MC for ammonia synthesis increases with increased mesoporous surface area of the mesoporous carbon. The reaction rate of ammonia synthesis is 139 mmol/(gcat·h) at 425 ℃, 10 MPa, and a gas hourly space velocity of 10000 h-1. |
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| Keywords: | Mesoporous carbon Ruthenium-based catalyst High specific surface area Pore structure Ammonia synthesis |
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