Resistance to SO2 poisoning of V2O5/TiO2-PILC catalyst for the selective catalytic reduction of NO by NH3

被引：31

作者：

Zang, Simiao ^{[1
]}

Zhang, Guizhen ^{[1
]}

Qiu, Wenge ^{[1
]}

Song, Liyun ^{[1
]}

Zhang, Ran ^{[1
]}

He, Hong ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Environm & Energy Engn, Key Lab Beijing Reg Air Pollut Control, Beijing Key Lab Green Catalysis & Separat,Dept Ch, Beijing 100124, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2016年 / 37卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Selective catalytic reduction; TiO2-pillared clay; Nitrogen oxide; Vanadia catalyst; In situ diffuse reflectance infrared Fourier transform spectroscopy; LOW-TEMPERATURE SCR; TITANIA-PILLARED MONTMORILLONITE; OXIDE CATALYSTS; SULFUR-DIOXIDE; FT-IR; SURFACE; ADSORPTION; OXIDATION; CLAY; PERFORMANCE;

D O I：

10.1016/S1872-2067(15)61083-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A titania pillared interlayered clay (Ti-PILC) supported vanadia catalyst (V2O5/TiO2-PILC) was prepared by wet impregnation for the selective catalytic reduction (SCR) of NO with ammonia. Compared to the traditional V2O5/TiO2 and V2O5-MoO3/TiO2 catalysts, the V2O5/TiO2-PILC catalyst exhibited a higher activity and better SO2 and H2O resistance in the NH3-SCR reaction. Characterization using TPD, in situ DRIFT and XPS showed that surface sulfate and/or sulfite species and ionic SO42- species were formed on the catalyst in the presence of SO2. The ionic SO42- species on the catalyst surface was one reason for deactivation of the catalyst in SCR. The formation of the ionic SO42- species was correlated with the amount of surface adsorbed oxygen species. Less adsorbed oxygen species gave less ionic SO42- species on the catalyst. (C) 2016, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：888 / 897

页数：10

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