Improving water tolerance of Co3O4 by SnO2 addition for CO oxidation

被引：78
|
作者：
Xu, Xianglan [1 ]
Sun, Xiongfei [1 ]
Han, Hong [1 ]
Peng, Honggen [1 ]
Liu, Wenming [1 ]
Peng, Xing [1 ]
Wang, Xiang [1 ]
Yang, Xiangjie [2 ]
机构：
[1] Nanchang Univ, Inst Appl Chem, Coll Chem, Nanchang 330031, Jiangxi, Peoples R China
[2] Nanchang Univ, Sch Mat Sci & Engn, Nanchang 330031, Jiangxi, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 355卷
关键词：
Co3O4; SnO2; modification; CO oxidation; Water resistance; FTIR; LOW-TEMPERATURE OXIDATION; GAS-SHIFT REACTION; MESOPOROUS CO3O4; CATALYTIC PERFORMANCE; CARBON-MONOXIDE; CH4; REDUCTION; NO; METHANE; SPINEL;
D O I：
10.1016/j.apsusc.2015.08.040
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A series of Sn-modified Co3O4 catalysts with different Co/Sn molar ratios were prepared via coprecipitation method and characterized by N-2-BET, XRD, H-2-TPR, XPS and FTIR techniques. The addition of a small amount of Sn into Co3O4 has a mild influence on its CO oxidation activity, but promotes its water resistance evidently. The major reason is attributed to the effective suppressing of water adsorption on the catalyst surface by Sn addition, as testified by FTIR results. Co0.90Sn0.10, a catalyst with a Co/Sn molar ratio of 0.90/0.10, shows the potential to be used in some real emission control processes for CO oxidation due to its reasonable activity and evidently improved reaction stability in the presence of water vapour. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：1254 / 1260
页数：7
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