California Institute of Technology

King Fahd University of Petroleum and Minerals

Bayer Corporation

Bp Chemicals Limited

Jay A Labinger

John E Bercaw

Mark E Davis

Axel Brait

Joseph Holles

David Leitch

Christopher J Dillon

Yan Choi Lam

Harry B Gray

Mamdouh Ahmad Al-Harthi

Sander Gaemers

Yu-Ling Hsiao

Aaron Sattler

Paul Oblad

Matthew S Winston

Dinesh C Aluthge

Edmund Fowles

Linear low density polyethylene (LLDPE) is produced from an ethylene-only feed over a tandem catalyst system consisting of a phenoxy-imine titanium trimerization catalyst and a silylene-linked cyclopentadienyl/amido titanium polymerization catalyst co-supported on the same methylaluminoxane/silica particles. The level of 1-hexene incorporation in the LLDPE can be controlled by varying the ethylene pressure. Tandem, co-silica-supported ethylene trimerization and ethylene/1-hexene copolymerization catalysts produce linear low density polyethylene (LLDPE) from an ethylene-only feedstock. The percentage 1-hexene incorporation in the LLDPE may be varied by adjusting the amounts of the two catalysts on the silica support.

Co-supported catalysts for the tandem trimerization and polymerization of ethylene to produce linear low density polyethylene

A method for coupling an alkane with an alkene using a hydrogen transfer catalyst and an alkene dimerization catalyst to form one or more higher molecular weight hydrocarbons.

Tandem transfer hydrogenation and oligomerization for hydrocarbon production

A catalyst and/or precatalyst for olefin oligomerization comprising one or more coordination complexes having one or more central palladium metal atoms. Each palladium atom is bonded to four ligand donor atoms. Two of the donor atoms are group 16 elements and two of the donor atoms are group 15 elements. Also provided are neutral or cationic coordination complex dimers, so that the two palladium atoms are both bonded to one or two donor atoms from group 16, and each palladium atom is bonded to two donor atoms from group 15. In some instances, each of the two group 16 donor atoms are oxygen and each of the four group 15 donor atoms are nitrogen.

Air and water tolerant catalyst

An active and selective hydrocarbon partial oxidation catalyst comprises an activated partially-reduced polyoxometallate, preferably niobium polyoxomolybdate, that is prepared from a suitable polyoxoanion, which has been exchanged with a suitable cation and activated by heating to an activation effective temperature in the presence of a suitable reducing agent such as pyridinium. Cand Chydrocarbons may be partially oxidized selectively to acrylic acid and maleic acid.

Polyoxometallate catalysts and catalytic processes

A catalyzed process whereby a cyclic olefin is oxidized to produce an epoxide is disclosed. The inventive process which uses air, or molecular oxygen as the sole oxidizing agent, and which is catalyzed by a specifically structured metallosalen complex is characterized in its high selectivity and high turnover efficiency.

Catalytic oxidation of cyclic olefins

Novel fuel cells based on the fast ion conductors, transition metal exchanged .beta.'-alumina and other similar metals capable of undergoing a change in oxidation state, which are used as catalysts for the deep oxidation of hydrocarbon-type fuels.

Fuel cells based on oxidation of organics over metal exchanged

Growing community of inventors

Claremont, CA, United States of America

Jay A Labinger