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Citation: 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[J]. Acta Physico-Chimica Sinica, ;2017, 33(6): 1123-1129. doi: 10.3866/PKU.WHXB201703301 shu

Preparation and Performance of Supported Bimetallic Catalysts for Hydrogen Production from Ammonia Decomposition by Plasma Catalysis

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

Received Date: 28 February 2017
Revised Date: 27 March 2017

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

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.
- Plasma,
- Fe-Ni,
- Bimetallic catalysts,
- Ammonia decomposition,
- Hydrogen
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