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
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425oC,10MPa和10000h1条件下,合成氨的反应速率为139mmol/（gcat·h）....
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| Published in | 催化学报 Vol. 34; no. 7; pp. 1395 - 1401 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
浙江工业大学工业催化研究所,浙江杭州,310032
2013
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-9837 1872-2067 |
| DOI | 10.1016/S1872-2067(12)60596-8 |
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| Summary: | 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425oC,10MPa和10000h1条件下,合成氨的反应速率为139mmol/（gcat·h）. |
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| Bibliography: | Mesoporous carbon; Ruthenium‐based catalyst; High specific surface area ;Pore structure; Ammonia synthesis ZHOU Yaping, LAN Guojun, ZHOU Bin, JIANG Wei, HAN Wenfeng, LIU Huazhang, LI Ying （Institute of Industrial Catalysis, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, China） 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 react |
| ISSN: | 0253-9837 1872-2067 |
| DOI: | 10.1016/S1872-2067(12)60596-8 |