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Environ Sci Technol

Title:		A Facile Method for in Situ Preparation of the MnO2/LaMnO3 Catalyst for the Removal of Toluene
Author(s):		Si W; Wang Y; Zhao S; Hu F; Li J;
Address:		"State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University , Beijing, 100084, P. R. China"
Journal Title:		Environ Sci Technol
Year:		2016
Volume:		20160331
Issue:		8
Page Number:		4572 - 4578
DOI:		10.1021/acs.est.5b06255
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"MOx/ABO3 is a promising catalyst for the high-efficiency removal of volatile organic compounds. However, this catalyst is limited on practical applications due to its complex synthesis procedure and high cost. In this work, the MnO2/LaMnO3 catalyst was prepared in situ using a facile one-step method for the first time, in which partial La cations were selectively removed from three dimensionally chain-like ordered macroporous (3DOM) LaMnO3 material. After selective removal, the obtained MnO2/LaMnO3 sample expressed an excellent catalytic performance on toluene oxidation. Toluene could be completely oxidized into CO2 and H2O at 290 degrees C over the MnO2/LaMnO3 catalyst with a toluene/oxygen molar ratio of 1/100 and a space velocity of 120?ª+000 mL/(g h). In addition, the apparent activation energy value of MnO2/LaMnO3 was 57 kJ/mol, which was lower than those of other metal oxides catalysts. According to O2-TPD and XPS results, it is concluded that the high catalytic performance of MnO2/LaMnO3 was mainly associated with the large amount of oxygen species and the excellent lattice oxygen mobility. MnO2/LaMnO3 is a promising catalyst for the practical removal of volatile organic compounds due to its high efficiency, good stability, low cost, and convenient preparation"
Keywords:		"Air Pollutants/*analysis Catalysis Lanthanum/*chemistry Manganese Compounds/*chemistry Microscopy, Electron, Scanning Oxidation-Reduction Oxides/*chemistry Oxygen/analysis Surface Properties Toluene/*analysis Volatile Organic Compounds/*analysis;"
Notes:		"MedlineSi, Wenzhe Wang, Yu Zhao, Shen Hu, Fangyun Li, Junhua eng Research Support, Non-U.S. Gov't 2016/02/18 Environ Sci Technol. 2016 Apr 19; 50(8):4572-8. doi: 10.1021/acs.est.5b06255. Epub 2016 Mar 31"