Study on the relationship between physicochemical properties and catalytic activity of Mn2O3 nanorods

被引：18
作者：
Gong, Pijun [1 ,3 ]
Xie, Junlin [1 ,2 ]
Fang, De [1 ,2 ]
He, Feng [1 ,3 ]
Li, Fengxiang [1 ,3 ]
Qi, Kai [1 ,3 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Hubei, Peoples R China
[2] Wuhan Univ Technol, Ctr Mat Res & Anal, Wuhan 430070, Hubei, Peoples R China
[3] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2017年 / 4卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Mn2O3; gamma-Mn2O3; nanorods; SCR; physicochemical properties; NOx; REDUCTION; NO; FTIR; GAMMA-MN2O3; OXIDATION; NH3;
D O I：
10.1088/2053-1591/aa9a25
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Selective catalytic reduction technology was considered to be the most effective technology for NOx treatment, and Mn2O3 had good catalytic activity. In this paper, we successfully synthesized alpha-Mn2O3 and gamma-Mn2O3 nanorods by hydrothermal method. Moreover, in order to study the effects of surface physicochemical properties on the activities of Mn2O3 nanorods, XRD, Raman, FESEM, BET, H2TPR, NH3-TPD, DRIFT and XPS were performed in detail. The results showed that the NH3-SCR performances of gamma-Mn2O3 were better than that of alpha-Mn2O3. The H-2-TPR, DRIFT and NH3-TPD results demonstrated that gamma-Mn2O3 possessed stronger reducing ability, more acid sites and stronger acid strength than alpha-Mn2O3. In addition, the XPS results displayed that more chemisorbed oxygen existed on the surface of gamma-Mn2O3 Mn2O3 nanorods. Based on the above mentioned favourable properties, gamma-Mn2O3 nanorods had an excellent performance than alpha-Mn2O3.
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页数：8
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