Effect of Y doping on oxygen vacancies of TiO2 supported MnOX for selective catalytic reduction of NO with NH3 at low temperature

被引：63
|
作者：
Zhang, Shule [1 ]
Liu, Xiaoxiao [1 ]
Zhong, Qin [1 ]
Yao, Yao [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2012年 / 25卷
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
SCR; Y doping; Charge compensation; Oxygen vacancies; Superoxide ions; OXIDE CATALYSTS; CALCINATION TEMPERATURE; MANGANESE OXIDES; NITRIC-OXIDE; MIXED OXIDES; SCR; OXIDATION; MECHANISM; AMMONIA; PERFORMANCE;
D O I：
10.1016/j.catcom.2012.03.026
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 Y-doped TiO2-supported MnOx has been developed by partly substituting the Ti4+ of the catalyst with Y3+ to promote oxygen vacancies for charge compensation. The aim of this study was to improve the activity of low-temperature SCR of NO with NH3 in the presence of excess oxygen by means of increasing the amount of oxygen vacancies. Analysis by PL spectra, XPS and EPR showed that V doping increased the amount of oxygen vacancies and superoxide ions. The catalytic activity of NO removal was promoted by Y doping. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：7 / 11
页数：5
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