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Acidic and catalytic properties of CsxH3−xPW12O40 heteropolyacid compounds

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Abstract

The heteropolyacid of Keggin structure (H3PW12O40) and several of its cesium salts have been synthesized and characterized for their acidic properties. Chemical analysis, TGA, NH3 adsorption-desorption and31P MAS-NMR techniques permit the characterization of the Brønsted acidity. The catalytic properties were studied forn-butane isomerization and for methanol conversion to dimethyl ether at 200 and 180°C, respectively. Our conclusion is that, in term of conversion, the more acidic catalysts are in the range Cs2/2.7 if considering a wide range of acid strengths evidenced by methanol conversion. The range is Cs2/Cs2.1 if one considers only very strong acidity as evidenced byn-butane isomerization.

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Authors and Affiliations

  1. Institut de Recherches sur la Catalyse, CNRS, 2 avenue Albert Einstein, F-69626, Villeurbanne Cedex, France

    Nadine Essayem, Gisèle Coudurier & Jacques C. Védrine

  2. Laboratoire de Catalyse Hétérogène et Homogène, Université des Sciences et Techniques de Lille, F-59655, Villeneuve d'Ascq Cedex, France

    Michel Fournier

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  1. Nadine Essayem
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  2. Gisèle Coudurier
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  3. Michel Fournier
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  4. Jacques C. Védrine
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Essayem, N., Coudurier, G., Fournier, M. et al. Acidic and catalytic properties of CsxH3−xPW12O40 heteropolyacid compounds. Catal Lett 34, 223–235 (1995). https://doi.org/10.1007/BF00808337

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  • DOI: https://doi.org/10.1007/BF00808337

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