Deactivation of Mn/TiO2 catalyst for NH3-SCR reaction: effect of phosphorous

Ning-zhi Yang; Rui-tang Guo; Qing-shan Wang; Wei-guo Pan; Qi-lin Chen; Chen-zi Lu; Shu-xian Wang

doi:10.1039/C5RA27713B

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Deactivation of Mn/TiO₂ catalyst for NH₃-SCR reaction: effect of phosphorous†

Ning-zhi Yang,^ab Rui-tang Guo,*^ab Qing-shan Wang,^ab Wei-guo Pan,^ab Qi-lin Chen,^ab Chen-zi Lu^ab and Shu-xian Wang^ab

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* Corresponding authors

^a School of Energy Source and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, P. R. China

^b Shanghai Engineering Research Center of Power Generation Environment Protection, Shanghai, P. R. China
E-mail: grta@zju.edu.cn
Tel: +86-21-65430410-316

Abstract

The deactivation mechanism of phosphorous on a Mn/TiO₂ catalyst for selective catalytic reduction of NO with NH₃ was investigated in this study. It was found that the NH₃-SCR reaction over the Mn/TiO₂ catalyst obeyed the Langmuir–Hinshelwood mechanism. From the characterization results, it could be found the addition of phosphorous on the Mn/TiO₂ catalyst would decrease its reducibility and inhibit the adsorption of chemisorbed oxygen and NO_x species on its surface. As a result, the P-doped Mn/TiO₂ catalyst was deactivated.

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Article information

DOI: https://doi.org/10.1039/C5RA27713B
Article type: Paper
Submitted: 25 Dec 2015
Accepted: 18 Jan 2016
First published: 21 Jan 2016

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RSC Adv., 2016,6, 11226-11232

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Deactivation of Mn/TiO₂ catalyst for NH₃-SCR reaction: effect of phosphorous

N. Yang, R. Guo, Q. Wang, W. Pan, Q. Chen, C. Lu and S. Wang, RSC Adv., 2016, 6, 11226 DOI: 10.1039/C5RA27713B

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