Citation: DING Jian, LIU Qing-cai, KONG Ming, LIN Fan, YANG Jian, REN Shan. Influence of arsenic in flue gas on the performance of V₂O₅-WO₃/TiO₂ catalyst in selective catalytic reduction of NO_x[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(4): 495-499. shu

Influence of arsenic in flue gas on the performance of V₂O₅-WO₃/TiO₂ catalyst in selective catalytic reduction of NO_x

Engineering Research Center for Energy and Environment of Chongqing, College of Materials Science and Engineering of Chongqing University, Chongqing 400044, China

Corresponding author: LIU Qing-cai, 20120902126@cqu.edu.cn
Received Date: 26 November 2015
Revised Date: 5 January 2016

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The effect of arsenic on the performance of commercial V₂O₅-WO₃/TiO₂ catalyst for selective catalytic reduction (SCR) of NO_x was investigated with the assistance of XRD, N₂ sorption, NH₃ chemisorption, FT-IR and XPS; an arsenic poisoning mechanism was proposed. The results illustrated that As₂O₃ in flue gas is a serious toxicant to the V₂O₅-WO₃/TiO₂ catalyst. As₂O₃ adsorbed on the catalyst are mostly oxidized to As₂O₅, which covers the catalyst surface and results in a decrease of surface area and active V sites; as a result, the adsorption of NH₃ is then inhibited, which leads to the deactivation of the V₂O₅-WO₃/TiO₂ catalyst for SCR.
- arsenic poisoning,
- V₂O₅-WO₃/TiO₂ catalyst,
- As₂O₃,
- denitration
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Influence of arsenic in flue gas on the performance of V2O5-WO3/TiO2 catalyst in selective catalytic reduction of NOx

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通讯作者: 陈斌, bchen63@163.com

Influence of arsenic in flue gas on the performance of V₂O₅-WO₃/TiO₂ catalyst in selective catalytic reduction of NO_x