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
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页码：1 / 7
页数：7
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