NOx selective catalytic reduction by ammonia over Cu-ETS-10 catalysts

被引：24

作者：

Song, Liyun ^{[1
]}

Zhan, Zongcheng ^{[1
]}

Liu, Xiaojun ^{[1
]}

He, Hong ^{[1
]}

Qiu, Wenge ^{[1
]}

Zi, Xuehong ^{[1
]}

机构：

[1] Beijing Univ Technol, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2014年 / 35卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Titanosilicate; Copper; Nitrogen oxide; Ammonia; Selective catalytic reduction; TITANOSILICATE ETS-10; EXCHANGED ETS-10; NITRIC-OXIDE; ZEOLITES; SCR; CU/SAPO-34; NH3; SITES;

D O I：

10.1016/S1872-2067(14)60035-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Ion exchange method was used to fabricate Cu-ETS-10 titanosilicate catalysts, which possessed high activity, N-2 selectivity and SO2 resistance for NOx selective catalytic reduction (SCR). N-2 sorption measurements indicated that the microporous catalysts had high surface areas of 288-380 m(2)/g. The Cu content and speciation were investigated by inductively coupled plasma atomic emission spectrometry, H-2 temperature-programmed reduction, and diffuse reflectance infrared Fourier transform spectroscopy. Various Cu species coexisted within the catalyst. Isolated Cu2+ species were the active sites for NH3-SCR, the number of which initially increased and then decreased with increasing Cu content. The catalytic activity of Cu-ETS-10 depended on the isolated Cu2+ species content. (C) 2014, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：1030 / 1035

页数：6

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