Chevron Chemical Company LLC

Other

Chevron Phillips Chemical Company LP

Ignatius Y Chan

Theresa A Pecoraro

Pamela R Auburn

Darryl K Whaley

Silica powders and mixed silica-oxide powders and methods of preparing such powders for use as catalyst supports for polymerization processes.

Powders of silica-oxide and mixed silica-oxide and method of preparing same

An amorphous aluminophosphate composition is provided which exhibits a microstructure of sheets and spheres of silica-modified aluminophosphate. Also provided is a method for preparing the composition comprising mixing an aqueous solution containing aluminum ions, phosphate ions and silica ions, with a neutralizing solution, wherein the mixing is conducted with sufficient shear to produce on a microlevel, sheets of silica-modified aluminophosphate and spheres of silica-modified aluminophosphate. A polymerization catalyst and a polymerization process are also provided.

Silica-modified aluminophosphate compositions, catalysts, method of

Powders of silica-oxide and mixed silica-oxide and method of preparing

Disclosed is a new aluminophosphate composition which is (i) amorphous; (ii) has, on a microlevel, sheets of aluminophosphate as well as spheres. The new composition can be made, in one embodiment, by neutralizing a mixture of aluminum cations and phosphate anions with a base with vigorous mixing including shear forces sufficient to result in the formation of a mixture of sheets and spheres of aluminophosphate on a microlevel.

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Novato, CA, United States of America

Ignatius Y Chan