Performance of pyrite-catalyzed CO reduction of NO

Zhang Zhao; Qi Rui; Xu Yaxin; Gong Zhijun

doi:10.7513/j.issn.1004-7638.2022.06.016

Volume 43 Issue 6

Jan. 2023

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Zhang Zhao, Qi Rui, Xu Yaxin, Gong Zhijun. Performance of pyrite-catalyzed CO reduction of NO[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 109-114. doi: 10.7513/j.issn.1004-7638.2022.06.016

Citation:

Zhang Zhao, Qi Rui, Xu Yaxin, Gong Zhijun. Performance of pyrite-catalyzed CO reduction of NO[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 109-114. doi: 10.7513/j.issn.1004-7638.2022.06.016

Zhang Zhao, Qi Rui, Xu Yaxin, Gong Zhijun. Performance of pyrite-catalyzed CO reduction of NO[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 109-114. doi: 10.7513/j.issn.1004-7638.2022.06.016

Citation:

Zhang Zhao, Qi Rui, Xu Yaxin, Gong Zhijun. Performance of pyrite-catalyzed CO reduction of NO[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(6): 109-114. doi: 10.7513/j.issn.1004-7638.2022.06.016

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Performance of pyrite-catalyzed CO reduction of NO

doi: 10.7513/j.issn.1004-7638.2022.06.016

Zhang Zhao^1
,,
Qi Rui¹,
Xu Yaxin¹,
Gong Zhijun^{1, 2
,
,}

1.
Key Laboratory of Efficient Clean Combustion in Inner Mongolia Autonomous Region, College of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
2.
Cooperative Innovation Center for Green Mining and Green Utilization of Inner Mongolia Coal, Baotou 014010, Inner Mongolia, China

Received Date: 2022-07-01
Publish Date: 2023-01-13

Abstract

Abstract

Pyrite was used as denitrification catalyst to investigate the performance in catalytic CO reduction of NO. XRF, XRD, SEM-EDS and H₂-TPR are used for characterization. The results showed that the NO conversion for pyrite was 78.53% at 400 ℃ and remained constant at 100% in the temperature range of 500~800 ℃. It shows excellent NO reduction performance and also possesses very high N₂ selectivity and good CO conversion. The surface of pyrite becomes rough and porous as it decomposes and releases SO₂ during the catalytic reaction. The catalytic substance in pyrite is FeS₂, and its catalytic reduction of NO by CO follows the redox reaction mechanism. In the reaction process, CO is assisted by S to reduce NO, and the presence of S facilitates the adsorption and reduction of NO gas on the catalyst surface, making pyrite highly catalytic.
- pyrite,
- catalytic reduction,
- CO,
- NO,
- FeS₂

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References(18)

References

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