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Preparation, characterization and catalytic studies of V2O5–SiO2 xerogel composite

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Abstract

In this work, we report the synthesis, characterization and catalytic properties of a vanadium oxide–silicon oxide composite xerogel prepared by a soft chemistry approach. In order to obtain such material, we submitted a vanadium pentoxide gel previously synthesized via protonation of metavanadate species to an “in situ” progressive polycondensation into silica gel. The material has been characterized by X-ray diffraction, infrared spectroscopy, thermogravimetric analysis and scanning electron microscopy. Further, the catalytic activity of this material was evaluated for the epoxidation of styrene and cyclooctene using iodosylbenzene, hydrogen peroxide and m-chloroperbenzoic acid as the oxidizing agent.

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Acknowledgements

The authors thank Conselho Nacional de Desenvolvimento Científico e Tecnológico for financial support (472848/2004-6). Coordenação de Aperfeiçoamento de Pessoal de Nível Superior is gratefully acknowledged for fellowship (GNB).

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Authors and Affiliations

  1. Depto. de Química, FFCLRP, USP, Av. Bandeirantes 3900, Ribeirao Preto, Sao Paulo, 14040-901, Brazil

    Glauciane N. Barbosa, Tatiana C. O. Mac Leod, Débora F. C. Guedes, Marilda D. Assis & Herenilton P. Oliveira

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  1. Glauciane N. Barbosa
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  2. Tatiana C. O. Mac Leod
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  3. Débora F. C. Guedes
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  4. Marilda D. Assis
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  5. Herenilton P. Oliveira
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Correspondence to Herenilton P. Oliveira.

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Barbosa, G.N., Mac Leod, T.C.O., Guedes, D.F.C. et al. Preparation, characterization and catalytic studies of V2O5–SiO2 xerogel composite. J Sol-Gel Sci Technol 46, 99–105 (2008). https://doi.org/10.1007/s10971-008-1690-7

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  • DOI: https://doi.org/10.1007/s10971-008-1690-7

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