Supported mesoporous solid base catalysts for condensation of carboxylic acids

Ambareesh D. Murkute, James E. Jackson, Dennis J. Miller

    Research output: Research - peer-reviewArticle

    • 31 Citations

    Abstract

    New mesoporous base catalysts (CM-HMS and CM-MCM-41) were synthesized by generating uniform particles of cerium and manganese oxides (MnO x/CeO2) in situ within hexagonal mesoporous silica (HMS) and MCM-41 supports. These catalysts were characterized by N2 adsorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectrometry (EDX), FTIR, temperature-programmed desorption of CO2 (CO2-TPD), and diffuse reflectance UV-visible (UV-vis) spectroscopy. Spectroscopic studies reveal that some particles of MnOx/CeO2 are incorporated into the walls of the silica network of HMS and MCM-41, while others are highly dispersed onto the surface of the HMS or MCM-41. The catalytic activity of CM-HMS and CM-MCM-41 for the ketonization of carboxylic acids was confirmed; better utilization of Ce and Mn was observed than in unsupported MnOx/CeO2. The citrate-based preparation of MnOx/CeO2 catalyst supported on HMS and MCM-41 has not been previously reported in the literature.

    LanguageEnglish (US)
    Pages189-199
    Number of pages11
    JournalJournal of Catalysis
    Volume278
    Issue number2
    DOIs
    StatePublished - Mar 7 2011

    Profile

    Carboxylic Acids
    Silicon Dioxide
    Condensation
    Catalysts
    Carboxylic acids
    Silica
    carboxylic acids
    condensation
    silicon dioxide
    catalysts
    MCM-41
    Multicarrier modulation
    Carbon Monoxide
    Temperature programmed desorption
    Catalyst supports
    Ultraviolet spectroscopy
    Citric Acid
    Catalyst activity
    Transmission electron microscopy
    Adsorption

    Keywords

    • Carboxylic acids
    • Cerium
    • Ketonization
    • Manganese
    • Mesoporous silica

    ASJC Scopus subject areas

    • Catalysis
    • Physical and Theoretical Chemistry

    Cite this

    Supported mesoporous solid base catalysts for condensation of carboxylic acids. / Murkute, Ambareesh D.; Jackson, James E.; Miller, Dennis J.

    In: Journal of Catalysis, Vol. 278, No. 2, 07.03.2011, p. 189-199.

    Research output: Research - peer-reviewArticle

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