Iron Oxide as a Promoter for Toluene Catalytic Oxidation Over Fe-Mn/γ-Al2O3 Catalysts

被引：28

作者：

Qin, Linbo ^{[1
,2
]}

Huang, Xinming ^{[1
,2
]}

Zhao, Bo ^{[1
,2
]}

Wang, Yu ^{[1
,2
]}

Han, Jun ^{[1
,2
]}

机构：

[1] Wuhan Univ Sci & Technol, Hubei Key Lab Efficient Utilizat & Agglomerat Met, Wuhan 430081, Peoples R China

[2] Wuhan Univ Sci & Technol, Hubei Prov Ind Safety Engn Technol Res Ctr, Wuhan 430081, Peoples R China

来源：

CATALYSIS LETTERS | 2020年 / 150卷 / 03期

基金：

中国博士后科学基金;

关键词：

Fe-Mn; gamma-Al2O3; In-situ FTIR; Iron oxide; Toluene oxidation; VOLATILE ORGANIC-COMPOUNDS; MN MIXED OXIDES; MANGANESE OXIDE; COMPOUNDS VOCS; SINTERED ORE; COMBUSTION; REDUCTION; NO; CO; GAS;

D O I：

10.1007/s10562-019-02975-5

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：

Fe-Mn/gamma-Al2O3 catalysts that prepared by the wet-impregnation method were used to degrade toluene, a VOCs model compound. The results indicated that the 10Fe-15Mn/gamma-Al2O3 exhibited 95% of toluene conversion as well as 95% of CO2 yield at 300 degrees C. The Fe-Mn/gamma-Al2O3 showed a better toluene oxidation activity with respect to the Fe/gamma-Al2O3 and Mn/gamma-Al2O3. The introduction of Fe into the Mn/gamma-Al2O3 resulted in higher surface area, higher Mn3+/(Mn3+ + Mn4+) ratio, lower reduction temperature, and homogenous distribution of Mn. Meanwhile, the co-exist of the Fe3+ and Mn3+ over the 10Fe-15Mn/gamma-Al2O3 also favored for the oxygen transfer, which may enhance the catalytic oxidation performance. The initial toluene was adsorbed on surface of the catalysts and formed benzoyl oxide (C6H5-CH2-O), and then the benzoyl oxide (C6H5-CH2-O) was oxidized to benzaldehyde. Furthermore, the benzaldehyde was further oxidized to form benzoic acid that could be converted to CO2 and H2O. Graphic

引用

页码：802 / 814

页数：13

共 47 条

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