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Effect of Phosphorylation of Si-MCM-41 and Ti-Si-MCM-41 Mesoporous Molecular Sieves on Their Structure-Adsorption and Acid Properties

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Abstract

Transmission electron microscopy, X-ray diffraction, nitrogen and argon adsorption, thermal analysis, thermoprogrammed ammonia desorption, and 1H MAS NMR spectroscopy were used to show that phosphorylation by POCl3 yields MCM-41 silica gel and Ti-MCM-41 titanium-silica gel mesoporous molecular sieves with about 1.1 mmol/g acid sites consisting largely of hydroxyl group protons of supported phosphoric acid. These materials display catalytic activity in the esterification of acetic acid by ethanol.

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Authors and Affiliations

  1. L. V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, 31 Prospekt Nauky, 03039, Kyiv, Ukraine

    A. S. Kovalenko, V. A. Ostapyuk & V. G. Il'in

  2. Auburn University, Alabama, 36849

    A. S. Korchev

  3. Taras Shevchenko Kyiv National University, 60 Volodymyrs'ka Vul., 01033, Kyiv, Ukraine

    T. V. Koval'chuk

Authors
  1. A. S. Kovalenko
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  2. A. S. Korchev
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  3. T. V. Koval'chuk
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  4. V. A. Ostapyuk
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  5. V. G. Il'in
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Kovalenko, A.S., Korchev, A.S., Koval'chuk, T.V. et al. Effect of Phosphorylation of Si-MCM-41 and Ti-Si-MCM-41 Mesoporous Molecular Sieves on Their Structure-Adsorption and Acid Properties. Theoretical and Experimental Chemistry 38, 381–387 (2002). https://doi.org/10.1023/A:1022231905004

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  • DOI: https://doi.org/10.1023/A:1022231905004

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