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Updated: Jul 24, 2026

Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments
Published on: May 11, 2017
Infrared Spectroscopic Characterization of the Alumina Surface
1Abteilung für Angewandte Physikalische Chemie, Heinrich-Heine-Universität, Düsseldorf, 40225, Germany
Abstract:
Using IR spectroscopic data of Cr(CO)6 adsorbed on different surface centers on gamma-Al2O3, we were able to calculate isotherms for adsorption on these centers. Linear relations were observed between spectroscopic data (position, extinction coefficient, and half-width values) of corresponding bands of Cr(CO)6, adsorbed on different Lewis acid centers and the free enthalpy of adsorption. Thus it is possible to determine DeltaG degreesad values for different centers from one adsorption measurement and thus to characterize the Lewis acid strength of the centers. Copyright 1999 Academic Press.
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