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

doi:10.1016/j.chphi.2022.100150

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

School of Energy and Power Engineering

Xi'an Jiaotong University
University of Chinese Academy of Sciences

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Commercial V₂O₅-WO₃/TiO₂ (VWTi) catalysts used in NH₃-SCR reaction with varied Zn loading were prepared and then effect of SO₂ on Zn-poisoned VWTi catalysts was investigated. Zn could cause the deactivation of VWTi catalysts. Nevertheless, the effect of SO₂ on Zn-poisoned VWTi catalysts varied with Zn loading. For Zn-poisoned catalyst with low content of Zn (1.0 wt.%, ZnL), SO₂ would promote the activity recovery of the catalyst. However, SO₂ had no influence on the Zn-poisoned catalyst with high Zn content (4.0 wt.%, ZnH). The catalyst was characterized by N₂ adsorption-desorption, XRD, XPS, SO₂-TPD, NH₃-TPD, H₂-TPR and in situ DRIFTS. Tri-coordinated sulfate species were formed on ZnL sample in the presence of SO₂, and the sulfate species could form new Brønsted acid sites, causing the recovery of activity. But ZnSO₄ was appeared and no Brønsted acid sites formed on ZnH sample under SO₂, thus the activity of ZnH sample changed little.

Original language	English
Article number	100150
Journal	Chemical Physics Impact
Volume	6
DOIs	https://doi.org/10.1016/j.chphi.2022.100150
State	Published - Jun 2023

Keywords

Activity recovery
Deactivation
NH-SCR
SO
Tri-coordinated sulfate
Zn

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@article{8aa9b77ea1084f0ebb527c49373aeac8,

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

abstract = "Commercial V2O5-WO3/TiO2 (VWTi) catalysts used in NH3-SCR reaction with varied Zn loading were prepared and then effect of SO2 on Zn-poisoned VWTi catalysts was investigated. Zn could cause the deactivation of VWTi catalysts. Nevertheless, the effect of SO2 on Zn-poisoned VWTi catalysts varied with Zn loading. For Zn-poisoned catalyst with low content of Zn (1.0 wt.\%, ZnL), SO2 would promote the activity recovery of the catalyst. However, SO2 had no influence on the Zn-poisoned catalyst with high Zn content (4.0 wt.\%, ZnH). The catalyst was characterized by N2 adsorption-desorption, XRD, XPS, SO2-TPD, NH3-TPD, H2-TPR and in situ DRIFTS. Tri-coordinated sulfate species were formed on ZnL sample in the presence of SO2, and the sulfate species could form new Br{\o}nsted acid sites, causing the recovery of activity. But ZnSO4 was appeared and no Br{\o}nsted acid sites formed on ZnH sample under SO2, thus the activity of ZnH sample changed little.",

keywords = "Activity recovery, Deactivation, NH-SCR, SO, Tri-coordinated sulfate, Zn",

author = "Yanke Yu and Mengqiao Geng and Jiahang Li and Jingjing Wang and Desheng Wei and Chi He",

note = "Publisher Copyright: {\textcopyright} 2022 The Authors",

year = "2023",

month = jun,

doi = "10.1016/j.chphi.2022.100150",

language = "英语",

volume = "6",

journal = "Chemical Physics Impact",

issn = "2667-0224",

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TY - JOUR

T1 - The different effect of SO2 on Zn-poisoned commercial V2O5-WO3/TiO2 catalysts with varied Zn loading

AU - Yu, Yanke

AU - Geng, Mengqiao

AU - Li, Jiahang

AU - Wang, Jingjing

AU - Wei, Desheng

AU - He, Chi

PY - 2023/6

Y1 - 2023/6

N2 - Commercial V2O5-WO3/TiO2 (VWTi) catalysts used in NH3-SCR reaction with varied Zn loading were prepared and then effect of SO2 on Zn-poisoned VWTi catalysts was investigated. Zn could cause the deactivation of VWTi catalysts. Nevertheless, the effect of SO2 on Zn-poisoned VWTi catalysts varied with Zn loading. For Zn-poisoned catalyst with low content of Zn (1.0 wt.%, ZnL), SO2 would promote the activity recovery of the catalyst. However, SO2 had no influence on the Zn-poisoned catalyst with high Zn content (4.0 wt.%, ZnH). The catalyst was characterized by N2 adsorption-desorption, XRD, XPS, SO2-TPD, NH3-TPD, H2-TPR and in situ DRIFTS. Tri-coordinated sulfate species were formed on ZnL sample in the presence of SO2, and the sulfate species could form new Brønsted acid sites, causing the recovery of activity. But ZnSO4 was appeared and no Brønsted acid sites formed on ZnH sample under SO2, thus the activity of ZnH sample changed little.

AB - Commercial V2O5-WO3/TiO2 (VWTi) catalysts used in NH3-SCR reaction with varied Zn loading were prepared and then effect of SO2 on Zn-poisoned VWTi catalysts was investigated. Zn could cause the deactivation of VWTi catalysts. Nevertheless, the effect of SO2 on Zn-poisoned VWTi catalysts varied with Zn loading. For Zn-poisoned catalyst with low content of Zn (1.0 wt.%, ZnL), SO2 would promote the activity recovery of the catalyst. However, SO2 had no influence on the Zn-poisoned catalyst with high Zn content (4.0 wt.%, ZnH). The catalyst was characterized by N2 adsorption-desorption, XRD, XPS, SO2-TPD, NH3-TPD, H2-TPR and in situ DRIFTS. Tri-coordinated sulfate species were formed on ZnL sample in the presence of SO2, and the sulfate species could form new Brønsted acid sites, causing the recovery of activity. But ZnSO4 was appeared and no Brønsted acid sites formed on ZnH sample under SO2, thus the activity of ZnH sample changed little.

KW - Activity recovery

KW - Deactivation

KW - NH-SCR

KW - SO

KW - Tri-coordinated sulfate

KW - Zn

UR - https://www.scopus.com/pages/publications/85145606488

U2 - 10.1016/j.chphi.2022.100150

DO - 10.1016/j.chphi.2022.100150

M3 - 文章

AN - SCOPUS:85145606488

SN - 2667-0224

VL - 6

JO - Chemical Physics Impact

JF - Chemical Physics Impact

M1 - 100150

ER -

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

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Keywords

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