Control of physical properties of alumina extrudates

Details Control of physical properties of alumina extrudates Control of physical properties of alumina extrudates

1976-07-01

1977-08-30

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

4232132, 4232135, B01J 2104

Patent

active

040453723

ABSTRACT:
A process for preparing extrudates of alumina monohydrate having densities, surface areas and pore volumes within a predetermined range by mixing the alumina with a sufficient quantity of water to prepare an extrudable product and aging this product for a period of 1/2 to 6 hours. The alumina is then extruded and the extrudates dried using conventional techniques. The alumina is primarily used as a base for auto exhaust conversion catalysts.

REFERENCES:
patent: 3661806 (1972-05-01), Briggs et al.
patent: 3853789 (1974-12-01), Warthen et al.
patent: 3898322 (1975-08-01), Leach
patent: 3917808 (1975-11-01), Leach et al.

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