Property influence and poisoning mechanism of HgCl2 on V2O5-WO3/TiO2 SCR-DeNOx catalysts

Ming Kong; Qingcai Liu; Lijun Jiang; Fuqiang Guo; Shan Ren; Lu Yao; Jian Yang

doi:10.1016/j.catcom.2016.07.011

Property influence and poisoning mechanism of HgCl₂ on V₂O₅-WO₃/TiO₂ SCR-DeNO_x catalysts

Ming Kong
, Qingcai Liu
, Lijun Jiang
, Fuqiang Guo
, Shan Ren
, Lu Yao
, Jian Yang

Chongqing University

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

17 Scopus citations

Abstract

In this paper, HgCl₂ was loaded by impregnation method to study its property influence and poisoning mechanism on V₂O₅-WO₃/TiO₂ SCR-DeNO_x catalyst. For HgCl₂-containing catalysts, deactivation was observed in simulated gas stream, and its catalytic activity declined with the increase of HgCl₂ loadings. Brønsted acid sites ([Formula presented]) and [Formula presented] bond were affected evidently by HgCl₂, new NH₃ adsorption site [Formula presented] was generated after HgCl₂ addition. Interactions between HgCl₂ and V₂O₅ resulted in the loss of SCR active sites, and –HgCl existed as the stable form on the bridge site. Finally, the probable schematic diagram of HgCl₂ poisoning mechanism was also proposed.

Original language	English
Pages (from-to)	34-38
Number of pages	5
Journal	Catalysis Communications
Volume	85
DOIs	https://doi.org/10.1016/j.catcom.2016.07.011
State	Published - 5 Oct 2016
Externally published	Yes

Keywords

Activity
HgCl
Poisoning mechanism
Selective catalytic reduction
VO-WO/TiO

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10.1016/j.catcom.2016.07.011

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title = "Property influence and poisoning mechanism of HgCl2 on V2O5-WO3/TiO2 SCR-DeNOx catalysts",

abstract = "In this paper, HgCl2 was loaded by impregnation method to study its property influence and poisoning mechanism on V2O5-WO3/TiO2 SCR-DeNOx catalyst. For HgCl2-containing catalysts, deactivation was observed in simulated gas stream, and its catalytic activity declined with the increase of HgCl2 loadings. Br{\o}nsted acid sites ([Formula presented]) and [Formula presented] bond were affected evidently by HgCl2, new NH3 adsorption site [Formula presented] was generated after HgCl2 addition. Interactions between HgCl2 and V2O5 resulted in the loss of SCR active sites, and –HgCl existed as the stable form on the bridge site. Finally, the probable schematic diagram of HgCl2 poisoning mechanism was also proposed.",

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

author = "Ming Kong and Qingcai Liu and Lijun Jiang and Fuqiang Guo and Shan Ren and Lu Yao and Jian Yang",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

month = oct,

day = "5",

doi = "10.1016/j.catcom.2016.07.011",

language = "英语",

volume = "85",

pages = "34--38",

journal = "Catalysis Communications",

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TY - JOUR

T1 - Property influence and poisoning mechanism of HgCl2 on V2O5-WO3/TiO2 SCR-DeNOx catalysts

AU - Kong, Ming

AU - Liu, Qingcai

AU - Jiang, Lijun

AU - Guo, Fuqiang

AU - Ren, Shan

AU - Yao, Lu

AU - Yang, Jian

PY - 2016/10/5

Y1 - 2016/10/5

N2 - In this paper, HgCl2 was loaded by impregnation method to study its property influence and poisoning mechanism on V2O5-WO3/TiO2 SCR-DeNOx catalyst. For HgCl2-containing catalysts, deactivation was observed in simulated gas stream, and its catalytic activity declined with the increase of HgCl2 loadings. Brønsted acid sites ([Formula presented]) and [Formula presented] bond were affected evidently by HgCl2, new NH3 adsorption site [Formula presented] was generated after HgCl2 addition. Interactions between HgCl2 and V2O5 resulted in the loss of SCR active sites, and –HgCl existed as the stable form on the bridge site. Finally, the probable schematic diagram of HgCl2 poisoning mechanism was also proposed.

AB - In this paper, HgCl2 was loaded by impregnation method to study its property influence and poisoning mechanism on V2O5-WO3/TiO2 SCR-DeNOx catalyst. For HgCl2-containing catalysts, deactivation was observed in simulated gas stream, and its catalytic activity declined with the increase of HgCl2 loadings. Brønsted acid sites ([Formula presented]) and [Formula presented] bond were affected evidently by HgCl2, new NH3 adsorption site [Formula presented] was generated after HgCl2 addition. Interactions between HgCl2 and V2O5 resulted in the loss of SCR active sites, and –HgCl existed as the stable form on the bridge site. Finally, the probable schematic diagram of HgCl2 poisoning mechanism was also proposed.

KW - Activity

KW - HgCl

KW - Poisoning mechanism

KW - Selective catalytic reduction

KW - VO-WO/TiO

UR - https://www.scopus.com/pages/publications/84979656584

U2 - 10.1016/j.catcom.2016.07.011

DO - 10.1016/j.catcom.2016.07.011

M3 - 文章

AN - SCOPUS:84979656584

SN - 1566-7367

VL - 85

SP - 34

EP - 38

JO - Catalysis Communications

JF - Catalysis Communications

ER -

Property influence and poisoning mechanism of HgCl₂ on V₂O₅-WO₃/TiO₂ SCR-DeNO_x catalysts

Abstract

Keywords

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