The different effect of SO2 on Zn-poisoned commercial V2O5-WO3/TiO2 catalysts with varied Zn loading

Yanke Yu,Mengqiao Geng,Jiahang Li,Jingjing Wang,Desheng Wei,Chi He

Chemical Physics Impact（2023）

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摘要

•The effect of SO2 on activity of Zn-poisoned catalyst depends on Zn content.•Surface sulfate was formed on catalyst with low Zn content in the presence of SO2.•ZnSO4 was formed on catalyst with high Zn content in the presence of SO2.•Surface sulfate could form new Brønsted acid sites and increase catalytic activity.

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关键词

NH3-SCR,Zn,Deactivation,SO2,Tri-coordinated sulfate,Activity recovery

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