The selective catalytic reduction of NO over Ce0.3TiOx-supported metal oxide catalysts

被引：17

作者：

Duan, Zhichen ^{[1
]}

Liu, Jian ^{[1
]}

Shi, Juan ^{[1
]}

Zhao, Zhen ^{[1
]}

Wei, Yuechang ^{[1
]}

Zhang, Xiao ^{[1
]}

Jiang, Guiyuan ^{[1
]}

Duan, Aijun ^{[1
]}

机构：

[1] China Univ Petr, Beijing Key Lab Oil & Gas Pollut Control, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES | 2018年 / 65卷

基金：

中国国家自然科学基金;

关键词：

NOx; NH3-SCR; Catalyst; Selectivity; Ce-Ti oxide; LOW-TEMPERATURE SCR; NH3; FE; SO2; AMMONIA; MN; CO;

D O I：

10.1016/j.jes.2017.01.016

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A Ce0.3TiOx oxide carrier was synthesized via a sol-gel process, and Ce0.3TiOx supported metal (M = Cd, Mn, Fe, W, Mo) oxide catalysts were prepared by the method of incipient-wetness impregnation. The catalysts were characterized by means of X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy, UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), and Temperature-programmed reduction with H-2 (H-2-TPR). The catalytic activities for de-NOx were evaluated by the NH3-SCR reaction. Among all the catalysts tested, the 2 wt.% Cd/Ce0.3TiOx catalyst exhibited the best NH3-SCR performance, with a wide temperature window of 250-450 degrees C for NO conversion above 90%. Moreover, the catalyst showed N-2 selectivity greater than 99% from 200 to 450 degrees C. (C) 2017 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

引用

页码：1 / 7

页数：7

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