MCM-41 supported Co-Mo bimetallic catalysts for enhanced hydrogen production by ammonia decomposition

被引：94
|
作者：
Duan, Xuezhi [1 ]
Qian, Gang [1 ]
Zhou, Xinggui [1 ]
Chen, De [2 ]
Yuan, Weikang [1 ]
机构：
[1] E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China
[2] Norwegian Univ Sci & Technol, Dept Chem Engn, N-7491 Trondheim, Norway
来源：
CHEMICAL ENGINEERING JOURNAL | 2012年 / 207卷
关键词：
Ammonia decomposition; Hydrogen production; Co-Mo bimetallic catalysts; Synergistic effect; MCM-41; COBALT; NANOPARTICLES; REDUCTION; NITRIDES; GROWTH; NH3;
D O I：
10.1016/j.cej.2012.05.100
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
MCM-41 supported Co, Mo and Co-Mo bimetallic catalysts with different Co/Mo atomic ratios were prepared by incipient wetness impregnation, and the channels of MCM-41 acted as nano-reactor. The catalysts without pre-nitridation treatments were directly used to catalyze ammonia decomposition. The characterization of the catalysts was carried out by N-2 physisorption, H-2-TPR, Raman, XRD, TEM and XPS. The results show that the catalysts have the similar size distribution of metallic particles. Due to the synergistic effect between Co and Mo, MCM-41 supported Co-Mo bimetallic catalysts show higher ammonia decomposition activity compared to Co or Mo alone. The Co-Mo bimetallic catalyst with the Co/Mo atomic ratio of about 7/3 exhibits the highest NH3 conversion. Moreover, the Co7Mo3/MCM-41 catalyst shows good thermal stability. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：103 / 108
页数：6
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