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Characterization of novel Cs and K substituted phosphotungstic acid modified MCM-41 catalyst and its catalytic activity towards acetylation of aromatic alcohols

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Abstract

The MCM-41 supported Cs2.5H0.5PW12O40 and K2.5H0.5PW12O40 salts were synthesized by incipient wetness impregnation method. The solids were characterized by N2 adsorption–desorption isotherms, FT-IR, XRD, and temperature programmed desorption, etc. This catalyst has been found to exhibit excellent activity for acetylation of phenolic compounds. The catalyst is stable and reusable giving 96% conversion with 100% selectivity towards acetate products.

Phosphotungstic acid and its cesium and potassium salts supported on MCM-41 are found to be very active and an efficient catalyst for acetylation of aromatic alcohols. Inexpensive and easily available acetic acid as acetylating agent was used. The catalyst 50CsPTA/MCM-41 showed highest conversion (yield 96%).

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Acknowledgements

The authors are thankful to Prof. B K Mishra Director Institute of Materials and Materials Technology (IMMT), Bhubaneswar for the constant encouragement and permission to publish this paper. One of the authors SR is grateful to the Council of Scientific and Industrial Research (CSIR) New Delhi, for the award of SRF.

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Authors and Affiliations

  1. Colloids and Materials Chemistry Department, Institute of Minerals and Materials Technology, Bhubaneswar, 751 013, India

    SURJYAKANTA RANA, SUJATA MALLICK, DHARITRI RATH & K M PARIDA

Authors
  1. SURJYAKANTA RANA
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  2. SUJATA MALLICK
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  3. DHARITRI RATH
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  4. K M PARIDA
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Corresponding author

Correspondence to K M PARIDA.

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RANA, S., MALLICK, S., RATH, D. et al. Characterization of novel Cs and K substituted phosphotungstic acid modified MCM-41 catalyst and its catalytic activity towards acetylation of aromatic alcohols. J Chem Sci 124, 1117–1125 (2012). https://doi.org/10.1007/s12039-012-0291-8

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  • DOI: https://doi.org/10.1007/s12039-012-0291-8

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