Transparent activated nonparticulate alumina and method of prepa

Details Transparent activated nonparticulate alumina and method of prepa Transparent activated nonparticulate alumina and method of prepa

1973-09-10

1976-03-02

Carter, Herbert T.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252317, 423625, 423626, 423630, C01F 702, B01J 2308

Patent

active

039417190

ABSTRACT:
A transparent, activated, nonparticulate alumina with a total porosity of about 63% which consists of a unique pore morphology and size distribution and is thermally stable up to about 1200.degree.C. at which temperature it can be nondestructively converted to alpha alumina is disclosed as well as a method of preparing said alumina by hydrolyzing aluminum alkoxides to form a particular sol which is essentially clear to the naked eye and the gel of which retains its integrity during drying and pyrolysis. The alumina thus produced is useful as a catalyst, absorbent and desiccant. In addition, a method of preparing the intermediate clear colloidal sol or gel consisting essentially of aluminum monohydrate is disclosed. This intermediate can be used to coat various substrates.

REFERENCES:
patent: 3264063 (1966-08-01), Carter
patent: 3647374 (1972-03-01), Nomura et al.

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