Authors: B. Hunger and J. Hoffmann
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  • Karl Marx University Department of Chemistry 7010 Leipzig G.D.R.
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Curves of the temperature-programmed desorption (TPD) of ammonia from zeolites were evaluated with several kinetic models. An approximately linear correlation was found between the activation energy of desorption or the heat of adsorption of H zeolites with various Si/Al ratios and the intermediate electronegativity of the zeolites, the latter representing a measure of the acid strength.

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