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Location of the Spinel Vacancies in γ-Al2O3.

08:00 EDT 13th June 2019 | BioPortfolio

Summary of "Location of the Spinel Vacancies in γ-Al2O3."

A non-spinel model for the structure of γ-Al2O3, with 25% of the Al3+ cations at tetrahedral positions, has been the subject of wide interest. However, 17O NMR measurements and, more recently, 27Al NMR measurements have shown that there are considerably more Al3+ cations at tetrahedral positions. This means that the Al3+ vacancies in γ-Al2O3 are not at tetrahedral but at octahedral positions, as in isostructural γ-Fe2O3 and in accordance with DFT predictions. This has consequences with regard to the surface structure of γ-Al2O3 and, thus, for catalysis.

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This article was published in the following journal.

Name: Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
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