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Acta Phys. -Chim. Sin.
Article     
Preparation and Performance of Supported Bimetallic Catalysts for Hydrogen Production from Ammonia Decomposition by Plasma Catalysis
SUN Shuai-Qi1, YI Yan-Hui1, WANG Li1, ZHANG Jia-Liang2, GUO Hong-Chen1
1 State Key Laboratory of Fine Chemicals, Department of Catalytic Chemistry and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, P. R. China;
2 School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, P. R. China
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Abstract  

Bimetallic Fe-Co, Fe-Ni, Mo-Co, and Mo-Ni catalysts, with total metal contents of 10 wt% and bimetallic molar ratios of 1:1, were prepared by the incipient wetness impregnation method and their activities for ammonia decomposition in the presence of plasma were studied. The Fe-Ni bimetallic catalyst exhibited a better synergistic effect than the other three bimetallic catalysts. The effect of the Fe/Ni molar ratio on its catalytic activity was also investigated. A 6:4 Fe/Ni molar ratio resulted in the highest ammonia decomposition activity and stability. The catalysts were characterized by N2 adsorption-desorption, XRD, H2-TPR, and HRTEM. The characterization results indicated that NiFe2O4 with a spinel structure was formed in the optimal Fe-Ni bimetallic catalysts and this structure favors the reduction of Fe and Ni. In other words, it is easy to achieve the metallic state of active components for the Fe-Ni bimetallic catalysts, which could be the reason for the high catalytic activity of bimetallic catalysts for NH3 decomposition.



Key wordsPlasma      Fe-Ni      Bimetallic catalysts      Ammonia decomposition      Hydrogen     
Received: 28 February 2017      Published: 30 March 2017
MSC2000:  O643  
Fund:  

The project was supported by the National Natural Science Foundation of China (20473016, 20673018)

Corresponding Authors: GUO Hong-Chen     E-mail: hongchenguo@163.com
Cite this article:

SUN Shuai-Qi, YI Yan-Hui, WANG Li, ZHANG Jia-Liang, GUO Hong-Chen. Preparation and Performance of Supported Bimetallic Catalysts for Hydrogen Production from Ammonia Decomposition by Plasma Catalysis. Acta Phys. -Chim. Sin., 2017, 33(6): 1123-1129.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB201703301     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2017/V33/I6/1123

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