Nalco Chemical Company

Gerald R Feistel

George N Pessimisis

Monica E Choca

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.

Polycarboxylic acids as extrusion aids for silica-aluminas

Alumina-phosphorous powders can be extruded into catalysts 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 alumina-phosphorous powder prior to extrusion. The addition of the polycarboxylic acid also increases the extrusion rate.

Process for preparing phosphorous-alumina catalysts using polycarboxylic

Porous silica particles useful in catalysis are prepared by adding excess alkali to a body of water glass; the excess alkali is responsible for increasing the pore diameter.

Silica-alumina and silica catalyst support bodies

Porous silica-alumina products useful in catalysis are prepared by adding excess alkali to a body of water glass, the excess alkali is responsible for rendering the product extrudable and for increasing the pore diameter.

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Hinsdale, IL, United States of America

Gerald R Feistel