期刊
ACS APPLIED NANO MATERIALS
卷 1, 期 3, 页码 1066-1075出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.7b00258
关键词
redox precipitation; FeMn oxides; heterogeneous catalysts; catalytic combustion; VOCs
资金
- Huazhong University of Science and Technology
- Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure [SKL201707SIC]
- China Postdoctoral Science Foundation [2016M602303]
Employing redox-precipitation reactions among MnO4+, Fe2+, and Mn2+, a facile synthetic route for highly homogeneous FeMn oxide (Fe1Mn2-RP) has been developed, which can achieve a superior catalytic performance in toluene combustion with T-50 and T-90 of 186 and 197 degrees C, respectively (500 ppm toluene/humid air, GHSV = 50,000 h(-1)). XRD, N-2 sorption isotherms, and TEM characterization demonstrated the formation of a homogeneous Fe-Mn-O solid solution with higher surface area for the Fe1Mn2-RP catalyst. The highly homogeneous Fe-Mn-O structure can result in better low temperature reducibility and a higher amount of oxygen electrophilic species evidenced by H-2-TPR and XPS, thus significantly increasing the catalytic activity. At the same time, the Fe1Mn2-RP catalyst showed excellent water/methanol-resistance and stability, demonstrating its great potential for practical application.
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