Epoxidation with hydrogen peroxide of unsaturated fatty acid methyl esters over Nb(V)-silica catalysts

Authors

  • Cristina Tiozzo,

    1. Istituto di Scienze e Tecnologie Molecolari, ISTM-CNR, Milano, Italy
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  • Chiara Bisio,

    1. Istituto di Scienze e Tecnologie Molecolari, ISTM-CNR, Milano, Italy
    2. Dipartimento di Scienze e Innovazione Tecnologica and Nano-SiSTeMI Interdisciplinary Centre, Università del Piemonte Orientale “A. Avogadro”, Alessandria, Italy
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  • Fabio Carniato,

    1. Dipartimento di Scienze e Innovazione Tecnologica and Nano-SiSTeMI Interdisciplinary Centre, Università del Piemonte Orientale “A. Avogadro”, Alessandria, Italy
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  • Leonardo Marchese,

    1. Dipartimento di Scienze e Innovazione Tecnologica and Nano-SiSTeMI Interdisciplinary Centre, Università del Piemonte Orientale “A. Avogadro”, Alessandria, Italy
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  • Alessandro Gallo,

    Corresponding author
    1. Istituto di Scienze e Tecnologie Molecolari, ISTM-CNR, Milano, Italy
    • Present address: Department of Chemical Engineering, University of California, Santa Barbara, CA USA
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  • Nicoletta Ravasio,

    1. Istituto di Scienze e Tecnologie Molecolari, ISTM-CNR, Milano, Italy
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  • Rinaldo Psaro,

    1. Istituto di Scienze e Tecnologie Molecolari, ISTM-CNR, Milano, Italy
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  • Matteo Guidotti

    Corresponding author
    1. Istituto di Scienze e Tecnologie Molecolari, ISTM-CNR, Milano, Italy
    • Istituto di Scienze e Tecnologie Molecolari, ISTM-CNR, via G. Venezian 21, 20133 Milano, Italy
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Abstract

Niobium(V)-containing silica catalysts were prepared by deposition of niobocene dichloride onto the surface of high-surface area silica supports following a dry impregnation or a liquid-phase grafting approach. These materials were used as heterogeneous catalysts for the selective epoxidation, in the presence of aqueous hydrogen peroxide, of a representative set of unsaturated fatty acid methyl esters (FAME), namely methyl oleate, methyl linoleate, and methyl ricinoleate. They all proved to be water-tolerant, recyclable, resistant to metal leaching, active and selective in the production of the related epoxidised FAME.

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