Exxon Research and Engineering Company

Chevron Research Company

Chevron Chemical Company LLC

Chevron U.s.a. Inc.

Other

Chevron Research & Technology Company

Chevron Phillips Chemical Company LP

Theresa A Pecoraro

Russell R Chianelli

Dennis L Holtermann

Donald S Santilli

James Nathan Ziemer

Robert A Innes

Stacey Ian Zones

Pamela R Auburn

Allan J Jacobson

Ignatius Y Chan

Teh Chung Ho

Martin B Dines

Darryl K Whaley

Russell Roland Krug

Ashok S Krishna

Stacy I Zones

Joanne Deady

Russel R Chianelli

David J Bott

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

Novel catalysts are provided for the polymerization of olefins such as ethylene. These catalysts comprise a novel amorphous aluminophosphate comprising, on a microlevel, sheets of aluminophosphate as well as spheres of aluminophosphate plus a chromium compound. These new catalysts are surprisingly active; result in more co-monomer incorporation than prior art catalysts and reduce the amount of low molecular weight material in the product.

Process for the polymerization of alpha olefins using a new

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.

Aluminophosphates and their method of preparation

A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.

Isomerization process using zeolite SSZ-25

Alkylation process using zeolite SSZ-25

Dewaxing process using zeolite SSZ-25

Hydrocarbon conversion process using zeolite SSZ-25

Zeolite SSZ-25

Novel hydrocarbon conversion catalysts and methods for their preparation are disclosed. The catalysts are particularly appropriate for the conversion of hydrocarbon feeds to high octane gasoline, while increasing light cycle oil and decreasing heavy cycle oil yield. The catalyst comprises a zeolite, a cogelled silica-alumina matrix, and clay.

Hydrocarbon conversion with octane-enhancing catalysts

Novel hydrocarbon conversion catalysts and methods for their preparation and use are disclosed. The catalysts are particularly appropriate for the conversion of hydrocarbon feeds to high octane gasoline, while increasing light cycle oil and decreasing heavy cycle oil yield. The catalyst comprises a unique cogelled silica-alumina matrix.

Catalytic cracking process employing silica/alumina cogel catalysts

A composition for the catalytic cracking of a high metals content hydrocarbonaceous feedstock is disclosed, the catalyst comprising a magnesium-containing clay material, a silica-alumina cogel, and zeolite.

Vanadium tolerant cracking catalyst

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Danville, CA, United States of America

Theresa A Pecoraro