Structural evolution of phosphated alumina during sol-gel synthesis.
J Phys Chem B
; 109(37): 17435-9, 2005 Sep 22.
Article
em En
| MEDLINE
| ID: mdl-16853229
Phosphated alumina gels were prepared by the sol-gel method. Gels were aged from 1 to 8 days in air. Gel structure evolution, as time went on, was followed by 27Al magic angle spinning nuclear magnetic resonance, X-ray diffraction, and small-angle X-ray scattering. It is concluded that the aging time is a crucial parameter in the formation of coordinately unsaturated sites of aluminum (AlIV and AlV). The gel network is shown to have a fractal structure.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
J Phys Chem B
Assunto da revista:
QUIMICA
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Estados Unidos