Performance impact and poisoning mechanism of arsenic over commercial V2O5-WO3/TiO2 SCR catalyst

Ming Kong; Qingcai Liu; Xiaoqing Wang; Shan Ren; Jian Yang; Dong Zhao; Wenchang Xi; Lu Yao

doi:10.1016/j.catcom.2015.09.029

Performance impact and poisoning mechanism of arsenic over commercial V₂O₅-WO₃/TiO₂ SCR catalyst

Ming Kong
, Qingcai Liu
, Xiaoqing Wang
, Shan Ren
, Jian Yang
, Dong Zhao
, Wenchang Xi
, Lu Yao

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

118 Scopus citations

Abstract

The performance impact and poisoning mechanism of arsenic on commercial V₂O₅-WO₃/TiO₂ SCR catalysts were studied. XRD, BET, FT-IR and XPS were used to characterize its physical-chemical properties. The results showed that As₂O₃ would be adsorbed on the catalyst surface and most oxidized by surface chemisorption oxygen to ultimately form As₂O₅. Lattice oxygen of V₂O₅ may also be transformed into surface sorption oxygen to oxidize As₂O₃, but tungsten and titanium species showed no changes in this progress. The creating As₂O₅ formed dense layer on catalyst surface, preventing NH₃ adsorption and active sites recovery, which finally resulted in catalytic deactivation.

Original language	English
Article number	4453
Pages (from-to)	121-126
Number of pages	6
Journal	Catalysis Communications
Volume	72
DOIs	https://doi.org/10.1016/j.catcom.2015.09.029
State	Published - 5 Dec 2015
Externally published	Yes

Keywords

Arsenic
Poisoning mechanism
Selective catalytic reduction
VO-WO/TiO

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10.1016/j.catcom.2015.09.029

Cite this

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title = "Performance impact and poisoning mechanism of arsenic over commercial V2O5-WO3/TiO2 SCR catalyst",

abstract = "The performance impact and poisoning mechanism of arsenic on commercial V2O5-WO3/TiO2 SCR catalysts were studied. XRD, BET, FT-IR and XPS were used to characterize its physical-chemical properties. The results showed that As2O3 would be adsorbed on the catalyst surface and most oxidized by surface chemisorption oxygen to ultimately form As2O5. Lattice oxygen of V2O5 may also be transformed into surface sorption oxygen to oxidize As2O3, but tungsten and titanium species showed no changes in this progress. The creating As2O5 formed dense layer on catalyst surface, preventing NH3 adsorption and active sites recovery, which finally resulted in catalytic deactivation.",

keywords = "Arsenic, Poisoning mechanism, Selective catalytic reduction, VO-WO/TiO",

author = "Ming Kong and Qingcai Liu and Xiaoqing Wang and Shan Ren and Jian Yang and Dong Zhao and Wenchang Xi and Lu Yao",

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year = "2015",

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day = "5",

doi = "10.1016/j.catcom.2015.09.029",

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TY - JOUR

T1 - Performance impact and poisoning mechanism of arsenic over commercial V2O5-WO3/TiO2 SCR catalyst

AU - Kong, Ming

AU - Liu, Qingcai

AU - Wang, Xiaoqing

AU - Ren, Shan

AU - Yang, Jian

AU - Zhao, Dong

AU - Xi, Wenchang

AU - Yao, Lu

PY - 2015/12/5

Y1 - 2015/12/5

N2 - The performance impact and poisoning mechanism of arsenic on commercial V2O5-WO3/TiO2 SCR catalysts were studied. XRD, BET, FT-IR and XPS were used to characterize its physical-chemical properties. The results showed that As2O3 would be adsorbed on the catalyst surface and most oxidized by surface chemisorption oxygen to ultimately form As2O5. Lattice oxygen of V2O5 may also be transformed into surface sorption oxygen to oxidize As2O3, but tungsten and titanium species showed no changes in this progress. The creating As2O5 formed dense layer on catalyst surface, preventing NH3 adsorption and active sites recovery, which finally resulted in catalytic deactivation.

AB - The performance impact and poisoning mechanism of arsenic on commercial V2O5-WO3/TiO2 SCR catalysts were studied. XRD, BET, FT-IR and XPS were used to characterize its physical-chemical properties. The results showed that As2O3 would be adsorbed on the catalyst surface and most oxidized by surface chemisorption oxygen to ultimately form As2O5. Lattice oxygen of V2O5 may also be transformed into surface sorption oxygen to oxidize As2O3, but tungsten and titanium species showed no changes in this progress. The creating As2O5 formed dense layer on catalyst surface, preventing NH3 adsorption and active sites recovery, which finally resulted in catalytic deactivation.

KW - Arsenic

KW - Poisoning mechanism

KW - Selective catalytic reduction

KW - VO-WO/TiO

UR - https://www.scopus.com/pages/publications/84943182075

U2 - 10.1016/j.catcom.2015.09.029

DO - 10.1016/j.catcom.2015.09.029

M3 - 文章

AN - SCOPUS:84943182075

SN - 1566-7367

VL - 72

SP - 121

EP - 126

JO - Catalysis Communications

JF - Catalysis Communications

M1 - 4453

ER -

Performance impact and poisoning mechanism of arsenic over commercial V₂O₅-WO₃/TiO₂ SCR catalyst

Abstract

Keywords

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