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Quantitative Determination of Brönsted Acid Sites on Zeolites: A New Approach Towards the Chemical Composition of Zeolites

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Abstract

An original quantitative method based on H/D exchange between H2O/D2O molecules and the OH groups of different zeolites has been developed for the titration of the Brönsted acid sites present on the solid surface. The measured Brönsted acid sites density appears to be in good agreement with the theoretical amount estimated by the Si/Al ratio. In contrary to classical methods, this non-destructive anhydride method titrates the whole quantity of Brönsted acid sites of zeolites.

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Authors and Affiliations

  1. Laboratoire de Physicochimie des Hydrocarbures, UMR 7513 Faculté de Chimie, Université Louis Pasteur, 4 rue Blaise Pascal, 67070, Strasbourg, France

    Benoît Louis, Stéphane Walspurger & Jean Sommer

Authors
  1. Benoît Louis
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  2. Stéphane Walspurger
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  3. Jean Sommer
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Correspondence to Jean Sommer.

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Louis, B., Walspurger, S. & Sommer, J. Quantitative Determination of Brönsted Acid Sites on Zeolites: A New Approach Towards the Chemical Composition of Zeolites. Catalysis Letters 93, 81–84 (2004). https://doi.org/10.1023/B:CATL.0000016953.36257.88

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  • DOI: https://doi.org/10.1023/B:CATL.0000016953.36257.88

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