Polycarboxylic acids as extrusion aids for silica-aluminas

Details Polycarboxylic acids as extrusion aids for silica-aluminas Polycarboxylic acids as extrusion aids for silica-aluminas

1978-09-22

1979-11-13

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

B01J 2906

Patent

active

041743016

ABSTRACT:
Silica-alumina powders can be extruded into catalyst supports having improved properties by the addition of up to 15% by weight of a polycarboxylic acid, containing 2-10 carbon atoms, based on the dry weight of the powder to the silica-alumina powders prior to extrusion. The addition of the polycarboxylic acid also increases the extrusion rate.

REFERENCES:
patent: 3917808 (1975-11-01), Leach et al.
patent: 4036784 (1977-07-01), Gembicki et al.
patent: 4102821 (1978-07-01), Pessimisis
patent: 4107087 (1978-08-01), Pessimisis

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