Summary
Two methods were applied to study OH coverage of alumina with FTIR-spectroscopy:
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1.
Adsorption of well defined amounts of water (rehydration method);
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2.
Conversion of OH groups on alumina samples into the completely associated form by D2O adsorption.
OH coverage determination with these methods was applied to a major number of samples prepared in different ways (preheating without or with partial rehydration). On the basis of these results it was possible to derive a general relation allowing to determine the OH coverage of γ-alumina from the integration of the OH valence band in three partial wavenumber intervals.
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Baumgarten, E., Wagner, R. & Lentes-Wagner, C. Quantitative determination of hydroxyl groups on alumina by IR spectroscopy. Z. Anal. Chem. 334, 246–251 (1989). https://doi.org/10.1007/BF00497251
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DOI: https://doi.org/10.1007/BF00497251