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

页码：7 / 11

页数：5

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