Effects of PbCl2 on selective catalytic reduction of NO with NH3 over vanadia-based catalysts

被引：118

作者：

Jiang, Ye ^{[1
,2
]}

Gao, Xiang ^{[2
]}

Zhang, Yongxin ^{[2
]}

Wu, Weihong ^{[2
]}

Song, Hao ^{[2
]}

Luo, Zhongyang ^{[2
]}

Cen, Kefa ^{[2
]}

机构：

[1] China Univ Petr, Coll Pipeline & Civil Engn, Qingdao 266580, Peoples R China

[2] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2014年 / 274卷

关键词：

Selective catalytic reduction; Nitrogen oxide; PbCl2; V2O5/TiO2; Activity; MUNICIPAL SOLID-WASTE; NITRIC-OXIDE; CHEMICAL DEACTIVATION; TITANIA CATALYSTS; MERCURY OXIDATION; SCR CATALYSTS; AMMONIA; POTASSIUM; MECHANISM; METALS;

D O I：

10.1016/j.jhazmat.2014.04.026

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effects of PbCl2 on the selective catalytic reduction of NO with NH3 over vanadia-based catalysts were studied with BET, XRD, SEM, XPS, NH3-TPD, NH3 chemisorption, FT-IR and catalytic activity measurements. The results showed that PbCl2 deactivated the catalysts to a very high extent. The doping of PbCl2 could decrease the surface acidity, especially that of Bronsted acid sites. XPS characterization reveals that the presence of PbCl2 resulted in the transformation of V5+ into V4+, which decreased the reducibility of vanadia species. Based on the analysis of physical and chemical properties of the catalysts, the PbCl2-poisoning mechanism model of the vanadia-based SCR catalysts was proposed. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：270 / 278

页数：9

共 41 条

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