Calorimetric studies of alumosilicate catalysts I. Heat and entropy of cumene adsorption on Mg-metakaolinite at small surface coverages |
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| Authors: | V V Goncharuk Yu D Pankratiev and N E Shcherbatyuk |
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| Institution: | (1) Institute of Colloid and Water Chemistry, Kiev Institute of Catalysis, Novosibirsk, USSR |
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| Abstract: | Differential heats of cumene adsorption at 293 K on Mg-metakaolinite at surface coverages  =0.005–0.10 have been measured on a Calvet microcalorimeter. The adsorption heat decreases drastically from 71 to 59 kJ/mol with changing the adsorption from 0.02 to 0.06 mol/m2. The presence of two energetically different types of adsorption centers is predicted on the Mg-metakaolinite surface.
                         293 Mg-   =0,005–0,10.   71 59 /  0,02 0,06 /2.  Mg-.
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