期刊
MATERIALS CHARACTERIZATION
卷 58, 期 8-9, 页码 776-781出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2006.11.005
关键词
manganese oxide; catalytic combustion; octahedral layer; octahedral molecular sieve
Manganese oxide, systems were prepared in the form of laminar octahedral compounds (birnessites) or octahedral molecular sieves (cryptomelanes) in order to test their efficiency as catalysts for the abatement of volatile organic compounds. Gelation routes and redox-reflux methods with different precursors were chosen such as KMnO4/glucose, KMnO4/polyvinyl. alcohol for bimessites and KMnO4/Mn-oxalate, KMnO4/Mn-sulphate and KMnO4/Mn-acetate for cryptomelanes. Birnessite, prepared using glucose as the reducing agent, showed a high activity in the total oxidation of acetone in spite of the moderate surface area. Cryptomelanes, prepared from Manganese carboxylates, present the classical fibrous morphology with a high surface area and were extremely active for acetone total oxidation. (C) 2006 Elsevier Inc. All rights reserved.
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