The topologic properties of the electronic charge distribution of Ž . conformers of H SiO H AlH molecule hydroxyl groups of zeolites are reported. The 3 3 studied properties-total density, Laplacian density, and bond ellipticity-were evaluated at the position of the critical points of the O᎐Si, O᎐Al
Ab initio SCF–MO study of the topology of the charge distribution of acid sites of zeolites
✍ Scribed by Humberto Soscún; Javier Hernández; Olga Castellano; Gilberto Díaz; Alan Hinchliffe
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 320 KB
- Volume
- 70
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
The structural, electronic, vibrational, and topologic properties of a series of acid sites of zeolites were studied at different levels of ab initio molecular orbital theory. The zeolite acid sites were modeled by using the following molecular clusters: Ž . Ž . Ž . Ž . Ž . Ž . Ž . silanol H SiOH B and the clusters H SiO H AlH B , OH SiO H Al OH B OH , 3 0 3 3 1 3 3 1 Ž . Ž . Ž . and H SiO H Al OH SiH B . The calculation of geometries and properties of these
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