Promotion of MgO addition on SO2 tolerance of Ag/Al2O3 for selective catalytic reduction of NOx with methane at low temperature

Yao Shi; Hua Pan; Yanting Zhang; Wei Li

doi:10.1016/j.catcom.2007.09.002

Promotion of MgO addition on SO₂ tolerance of Ag/Al₂O₃ for selective catalytic reduction of NO_x with methane at low temperature

Yao Shi
, Hua Pan
, Yanting Zhang
, Wei Li

Zhejiang University

科研成果: 期刊稿件 › 文章 › 同行评审

25 引用（Scopus）

摘要

The effect of MgO addition on SO₂ tolerance of Ag/Al₂O₃ for the CH₄-SCR was investigated. MgO addition significantly decreases the active temperature window of NO_x conversion, and promotes the SO₂ resistance of Ag/Al₂O₃ at low temperature range of 573-673 K. Silver oxide particles are well dispersed and large silver crystals are present in Ag/MgAl₂O₄ catalyst. The slight decrease in catalytic activity over Ag/MgAl₂O₄ exposure to SO₂ is attributed to the partially deactivation of alumina sites poisoned by SO₂. MgO may effectively inhibit the competitive adsorption between NO_x and SO₂ in alumina sites, and enhance SO₂ adsorption on the magnesia surface.

源语言	英语
页（从-至）	796-800
页数	5
期刊	Catalysis Communications
卷	9
期	5
DOI	https://doi.org/10.1016/j.catcom.2007.09.002
出版状态	已出版 - 20 3月 2008
已对外发布	是

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10.1016/j.catcom.2007.09.002

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title = "Promotion of MgO addition on SO2 tolerance of Ag/Al2O3 for selective catalytic reduction of NOx with methane at low temperature",

abstract = "The effect of MgO addition on SO2 tolerance of Ag/Al2O3 for the CH4-SCR was investigated. MgO addition significantly decreases the active temperature window of NOx conversion, and promotes the SO2 resistance of Ag/Al2O3 at low temperature range of 573-673 K. Silver oxide particles are well dispersed and large silver crystals are present in Ag/MgAl2O4 catalyst. The slight decrease in catalytic activity over Ag/MgAl2O4 exposure to SO2 is attributed to the partially deactivation of alumina sites poisoned by SO2. MgO may effectively inhibit the competitive adsorption between NOx and SO2 in alumina sites, and enhance SO2 adsorption on the magnesia surface.",

keywords = "Ag/MgAlO, CH-SCR, NO, SO",

author = "Yao Shi and Hua Pan and Yanting Zhang and Wei Li",

year = "2008",

month = mar,

day = "20",

doi = "10.1016/j.catcom.2007.09.002",

language = "英语",

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pages = "796--800",

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T1 - Promotion of MgO addition on SO2 tolerance of Ag/Al2O3 for selective catalytic reduction of NOx with methane at low temperature

AU - Shi, Yao

AU - Pan, Hua

AU - Zhang, Yanting

AU - Li, Wei

PY - 2008/3/20

Y1 - 2008/3/20

N2 - The effect of MgO addition on SO2 tolerance of Ag/Al2O3 for the CH4-SCR was investigated. MgO addition significantly decreases the active temperature window of NOx conversion, and promotes the SO2 resistance of Ag/Al2O3 at low temperature range of 573-673 K. Silver oxide particles are well dispersed and large silver crystals are present in Ag/MgAl2O4 catalyst. The slight decrease in catalytic activity over Ag/MgAl2O4 exposure to SO2 is attributed to the partially deactivation of alumina sites poisoned by SO2. MgO may effectively inhibit the competitive adsorption between NOx and SO2 in alumina sites, and enhance SO2 adsorption on the magnesia surface.

AB - The effect of MgO addition on SO2 tolerance of Ag/Al2O3 for the CH4-SCR was investigated. MgO addition significantly decreases the active temperature window of NOx conversion, and promotes the SO2 resistance of Ag/Al2O3 at low temperature range of 573-673 K. Silver oxide particles are well dispersed and large silver crystals are present in Ag/MgAl2O4 catalyst. The slight decrease in catalytic activity over Ag/MgAl2O4 exposure to SO2 is attributed to the partially deactivation of alumina sites poisoned by SO2. MgO may effectively inhibit the competitive adsorption between NOx and SO2 in alumina sites, and enhance SO2 adsorption on the magnesia surface.

KW - Ag/MgAlO

KW - CH-SCR

KW - NO

KW - SO

UR - https://www.scopus.com/pages/publications/38849171125

U2 - 10.1016/j.catcom.2007.09.002

DO - 10.1016/j.catcom.2007.09.002

M3 - 文章

AN - SCOPUS:38849171125

SN - 1566-7367

VL - 9

SP - 796

EP - 800

JO - Catalysis Communications

JF - Catalysis Communications

IS - 5

ER -

Promotion of MgO addition on SO2 tolerance of Ag/Al2O3 for selective catalytic reduction of NOx with methane at low temperature

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Promotion of MgO addition on SO₂ tolerance of Ag/Al₂O₃ for selective catalytic reduction of NO_x with methane at low temperature