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Physicochemical Characterization and Catalytic Properties of Titania Gel Doped with Lithium and Rubidium

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Abstract

The effect on titania of doping with lithium and rubidium titania gels has been studied in samples prepared with titanium (IV) tetra-n-butoxide co-gelling with the alkaline metal precursors. Titania and doped titania were characterized by X-Ray diffraction, which showed that the catalysts were nanostructured. In samples calcined at 400°C, the crystallite size of the anatase phase was 17 and 14 nm, and 78 and 38 nm for samples calcined at 600°C, for Li/TiO2 and Rb/TiO2, respectively. The specific surface areas of doped samples (400°C) are lower in Li/TiO2 (90 m2/g) than in Rb/TiO2(125 m2/g). Evaluation of their basic properties has been carried out in the acetone condensation reaction. It was found that the activity strongly depended on the Li and Rb ionic radii.

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Authors and Affiliations

  1. Departament of Chemistry, Universidad Autónoma Metropolitana, Iztapalapa, P.O. Box 55-534, México, 09340, D.F.

    M. Zamora & T. López

  2. Departament of Chemistry, Universidad Autónoma Metropolitana, Iztapalapa, P.O. Box 55-534, México, 09340, D.F.

    R. Gómez

  3. Instituto Mexicano del Petróleo, Programa de Ingeniería Molecular, Iztapalapa, P.O. Box 55-534, México, 09340, D.F.

    R. Gómez

  4. Departament of Chemistry, Universidad Autónoma Metropolitana, Iztapalapa, P.O. Box 55-534, México, 09340, D.F.

    M. Asomoza

  5. Instituto Politécnico Nacional, UPICSA, México, D.F.

    A. GarcÍa-Ruiz

  6. UNAM, Instituto de Física, México, D.F.

    X. Bokhimi

  7. Instituto Mexicano del Petróleo, Programa de Ingeniería Molecular, México, D.F.

    X. Bokhimi

Authors
  1. M. Zamora
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  2. T. López
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  3. R. Gómez
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  4. M. Asomoza
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  5. A. GarcÍa-Ruiz
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  6. X. Bokhimi
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Correspondence to T. López.

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Zamora, M., López, T., Gómez, R. et al. Physicochemical Characterization and Catalytic Properties of Titania Gel Doped with Lithium and Rubidium. J Sol-Gel Sci Technol 32, 339–343 (2004). https://doi.org/10.1007/s10971-004-5813-5

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  • DOI: https://doi.org/10.1007/s10971-004-5813-5

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