Effect of water vapor on low temperature SCR performances over Cu and Mn-based catalysts: A comparison study

Wang, Xiaoqiang; Chi, Rujing; Gu, Liding; Sun, Li; Liu, Yue; Wu, Zhongbiao

doi:10.1016/j.jre.2024.06.038

Journal of Rare Earths

2024

DOI: 10.1016/j.jre.2024.06.038

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Effect of water vapor on low temperature SCR performances over Cu and Mn-based catalysts: A comparison study

Xiaoqiang Wang,

Rujing Chi,

Liding Gu

et al.

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The Copoisoning Effects of Antimony and Ammonium Bisulfate on Ceria-Based Catalysts for NO_x Reduction

Wang,

Luo,

Zhao

et al. 2024

Ind. Eng. Chem. Res.

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In this study, the underlying influence mechanism between Sb and ABS on ceria-based SCR catalysts has been disclosed. Experimental results indicate that there exists a copoisoning effect between antimony (Sb) and ammonium bisulfate (ABS) on SCR activity, which significantly suppresses NO conversion below about 40% within the whole investigated temperature window. Characterization results deduced that the copoisoning effect should be derived from the existing strong interactions between Sb and ABS. Inherently, the formed interactions not only result in pronounced deactivation in structural properties and redox capacity but also counteract the acidity enhancement provided by sulfate species from ABS. Importantly, the restrained mobility of active oxygen species would hinder reaction between NO and NH 4 + from ABS, while the narrowed pore size and existence of interactions could strengthen the thermal stability of ABS, therefore resulting in more serious deactivation of SCR performances.

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The Copoisoning Effects of Antimony and Ammonium Bisulfate on Ceria-Based Catalysts for NO_x Reduction

Wang,

Luo,

Zhao

et al. 2024

Ind. Eng. Chem. Res.

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show abstract

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Effect of water vapor on low temperature SCR performances over Cu and Mn-based catalysts: A comparison study

Cited by 1 publication

References 50 publications

The Copoisoning Effects of Antimony and Ammonium Bisulfate on Ceria-Based Catalysts for NO_x Reduction

The Copoisoning Effects of Antimony and Ammonium Bisulfate on Ceria-Based Catalysts for NO_x Reduction

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Effect of water vapor on low temperature SCR performances over Cu and Mn-based catalysts: A comparison study

Cited by 1 publication

References 50 publications

The Copoisoning Effects of Antimony and Ammonium Bisulfate on Ceria-Based Catalysts for NOx Reduction

The Copoisoning Effects of Antimony and Ammonium Bisulfate on Ceria-Based Catalysts for NOx Reduction

Contact Info

Product

Resources

About

The Copoisoning Effects of Antimony and Ammonium Bisulfate on Ceria-Based Catalysts for NO_x Reduction

The Copoisoning Effects of Antimony and Ammonium Bisulfate on Ceria-Based Catalysts for NO_x Reduction