Effectively promote catalytic performance by adjusting W/Fe molar ratio of FeWx/Ce0.68Zr0.32O2 monolithic catalyst for NH3-SCR

被引：45

作者：

Xu, Haidi ^{[1
,2
]}

Li, Yuanshan ^{[3
]}

Xu, Baoqiang ^{[4
]}

Cao, Yi ^{[4
]}

Feng, Xi ^{[3
]}

Sun, Mengmeng ^{[1
]}

Gong, Maochu ^{[4
]}

Chen, Yaoqiang ^{[1
,2
,3
,4
]}

机构：

[1] Sichuan Univ, Inst New Energy & Low Carbon Technol, Chengdu 610064, Peoples R China

[2] Sichuan Prov Environm Protect Environm Catalyt Ma, Chengdu 610064, Peoples R China

[3] Sichuan Univ, Coll Chem Engn, Chengdu 610064, Peoples R China

[4] Sichuan Univ, Coll Chem, Chengdu 610064, Peoples R China

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2016年 / 36卷

基金：

中国国家自然科学基金;

关键词：

Molar ratio; Tungsten; Iron; Selective catalytic reduction; Nitrogen oxides; LOW-TEMPERATURE SCR; SOL-GEL METHOD; NO REDUCTION; MODIFIED CEO2/TIO2; NH3; AMMONIA; OXIDES; TUNGSTEN; IRON; O-2;

D O I：

10.1016/j.jiec.2016.02.024

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

FeWx/Ce0.68Zr0.32O2 (x = 0, 0.35, 0.7, 1.03, 1.38) catalysts with different molar ratios (x) of W/Fe were prepared for NH3-SCR. The experimental results showed that catalytic performances of catalysts were obviously improved by adjusting the molar ratio of W/Fe. FeW1.03/Ce0.68Zr0.32O2 catalyst with W/Fe of 1.03 displayed the best catalytic performance, it could obtain higher than 95% NOx, conversion and nearly 100% N-2 selectivity in the temperature range of 250-435 degrees C. The characterization results indicated that more active species of Fe3+, chemical adsorbed oxygen species and surface acid sites would together contribute to the excellent NH3-SCR performance of FeW1.03/Ce0.68Zr0.32O2 catalyst. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：334 / 345

页数：12

共 41 条

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