Effect of pore structure of mesoporous carbon on its supported Ru catalysts for ammonia synthesis

被引：17
|
作者：
Zhou Yaping [1 ]
Lan Guojun [1 ]
Zhou Bin [1 ]
Jiang Wei [1 ]
Han Wenfeng [1 ]
Liu Huazhang [1 ]
Li Ying [1 ]
机构：
[1] Zhejiang Univ Technol, Inst Ind Catalysis, Hangzhou 310032, Zhejiang, Peoples R China
来源：
CHINESE JOURNAL OF CATALYSIS | 2013年 / 34卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Mesoporous carbon; Ruthenium-based catalyst; High specific surface area; Pore structure; Ammonia synthesis; RUTHENIUM CATALYSTS; ACTIVATED CARBON; PERFORMANCE; ACID;
D O I：
10.1016/S1872-2067(12)60596-8
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
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. N-2 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/(g(cat).h) at 425 degrees C, 10 MPa, and a gas hourly space velocity of 10000 h(-1). (C) 2013, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1395 / 1401
页数：7
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