Effect of KCl on the Selective Catalytic Reduction of NO with NH3 over Vanadia-Based Catalysts for Biomass Combustion

被引：22

作者：

Jiang, Ye ^{[1
,2
]}

Gao, Xiang ^{[2
]}

Zhang, Yongxin ^{[2
]}

Wu, Weihong ^{[2
]}

Luo, Zhongyang ^{[2
]}

Cen, Kefa ^{[2
]}

机构：

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

[2] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310003, Zhejiang, Peoples R China

来源：

ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY | 2014年 / 33卷 / 02期

关键词：

selective catalytic reduction; NO; vanadia-based catalyst; KCl deactivation; COMMERCIAL SCR CATALYSTS; MERCURY OXIDATION; DEACTIVATION; MECHANISM; V2O5; REGENERATION; ALKALI; METALS; OXIDES;

D O I：

10.1002/ep.11795

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Effect of KCl on vanadia-based catalysts for selective catalytic reduction of NO with NH3 was investigated by means of BET and pore size distribution measurements, XRD, XPS, FTIR, and NO reduction measurements. The catalytic activity was found to decrease rapidly with increasing the amount of KCl addition at different reaction temperatures. When the molar ratio of K/V exceeded 2.0, most of the activity was lost. The presence of KCl caused the sintering of the catalysts as well as the decrease in the amount of V atoms and the change of V valence state at the catalyst surface. Based on the analysis of physical and chemical properties of the catalysts, the KCl-poisoning mechanism model of the vanadia-based SCR catalysts was proposed. (c) 2013 American Institute of Chemical Engineers Environ Prog, 33: 390-395, 2014

引用

页码：390 / 395

页数：6

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