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

WANG Hui-min; NING Ping; ZHANG Qiu-lin; LIU Xin; ZHANG Teng-xiang; HU Jia; WANG Lan-ying

Volume 47 Issue 2

Feb. 2019

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Article Navigation > Journal of Fuel Chemistry and Technology > 2019 > 47(2): 215-223

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.

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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.

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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

Funds:

the National Natural Science Foundation of China 21307047

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Corresponding author: ZHANG Qiu-lin, Tel: 13668788376, E-mail: qiulinzhang_kmust@163.com
Received Date: 2018-10-08
Rev Recd Date: 2018-12-07

Available Online: 2021-01-23

Publish Date: 2019-02-10

Abstract

Abstract

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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References(36)

References

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