Citation: WANG Hui-min, NING Ping, ZHANG Qiu-lin, LIU Xin, ZHANG Teng-xiang, HU Jia, WANG Lan-ying. Effect of different RuO₂ contents on selective catalytic oxidation of ammonia over RuO₂-Fe₂O₃ catalysts[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(2): 215-223. shu

Effect of different RuO₂ contents on selective catalytic oxidation of ammonia over RuO₂-Fe₂O₃ catalysts

Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China

Corresponding author: ZHANG Qiu-lin, qiulinzhang_kmust@163.com
Received Date: 8 October 2018
Revised Date: 7 December 2018

Fund Project: The project was supported by the National Natural Science Foundation of China (21307047)the National Natural Science Foundation of China 21307047

Figures(6)

A series of RuO₂-Fe₂O₃ catalysts varied in RuO₂ loading were prepared by sol-gel method and used for selective catalytic oxidation of ammonia to nitrogen. The results indicated that all the RuO₂-Fe₂O₃ catalysts showed an excellent low-temperature catalytic activity and the RuO₂ loading played a key role in catalytic activity of ammonia oxidation. Moreover, the characterizations of BET, XRD, H₂-TPR and DRIFTS were employed to investigate the relation between the physicochemical property of catalysts and catalytic activity. The research results elucidated that the introduction of RuO₂ increased the surface area. The synergistic effect between RuO₂ and Fe₂O₃ enhanced the redox property and the catalytic activity of ammonia oxidation. Meanwhile, the RuO₂ loading gave the significant effect on surface acidity of catalysts. Lewis acid sites were predominant on the catalyst surface.
- sol-gel method,
- selective catalytic oxidation of ammonia,
- synergistic effect,
- acid sites
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Effect of different RuO2 contents on selective catalytic oxidation of ammonia over RuO2-Fe2O3 catalysts

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Effect of different RuO₂ contents on selective catalytic oxidation of ammonia over RuO₂-Fe₂O₃ catalysts