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Synthesis, characterization and catalytic oxidation activity of zirconium doped K-OMS-2 type manganese oxide materials
Balasubramanian Viswanathan, Thirukkallam Kanthadai Varadarajan
Published in
2006
Volume: 252
   
Issue: 1-2
Pages: 49 - 55
Abstract
Zirconium doped manganese oxide OMS-2 materials have been synthesized. The synthesized zirconium doped manganese oxide OMS-2 materials have been characterized by XRD, TGA, BET and TEM techniques. All the materials showed the OMS-2 type (cryptomelane) X-ray diffraction patterns and the thermal stability and BET surface area of zirconium doped OMS-2 materials are improved compared to the parent manganese oxide (K-OMS-2) material. Transmission electron micrographs showed the rod like needle shaped morphology and zirconia dispersion on fibrous morphology of as-synthesized zirconium doped manganese oxide OMS-2 materials. As synthesized zirconium incorporated OMS-2 catalysts have been tested for the liquid phase oxidation of side chain aromatic compounds (ethylbenzene and benzyl alcohol) and cyclohexanol. Zr-K-OMS-2 (Cry) has shown high conversion for ethylbenzene and benzyl alcohol, whereas Zr-K-OMS-2 (Bir) has shown high activity for the conversion of cyclohexanol and good selectivity towards the formation of cyclohexanone. © 2006 Elsevier B.V. All rights reserved.
About the journal
JournalJournal of Molecular Catalysis A: Chemical
ISSN13811169
Open AccessNo
Concepts (14)
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    Aromatic compounds
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    CATALYSTS
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    Oxidation
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    Synthesis (chemical)
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    Thermodynamic stability
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    Thermogravimetric analysis
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    Transmission electron microscopy
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    X ray diffraction
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    Zirconium
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    Benzyl alcohol
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    BIRNESSITE
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    ETHYL BENZENE
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    OMS-2
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    Manganese compounds