Abstract
The steps at 70, 62, and 56 kJ/mol were specified on the dependences of differential heats \(\overline Q _a\) of adsorption on the values of adsorption aon the hydroxylated γ-Al2O3surface resulted from the interaction of adsorbed water molecules with the surface-coordinated water molecules, acid and basic hydroxyl groups, respectively; effective charges qwere estimated for the protons of coordinated water molecules and acid and basic OH groups. The hydration numbers were calculated in the region of monolayer coverage for the three aforementioned adsorption sites. The texture changes discovered in γ-Al2O3particles were attributed to the interlamellar swelling of the secondary sorbent packets formed from its primary particles.
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