Paul R Wentrcek

50177354, May 21, 1991

Jul 24, 1989

7/384647

Jere Fellmann - Livermore CA
Paul R. Wentrcek - Redwood City CA
Peter Kilner - Sunnyvale CA

Catalytica, Inc. - Mountain View CA

C07C 713

585820

A process for enriching the fraction of 2,6-diisopropylnaphthalene contained in a quantity of mixed dialkylated naphthalenes. The mixed dialkylated naphthalenes are contacted with an adsorbant bed containing one or more molecular sieves which demonstrate shape selective preference for the 2,6-diisopropylnaphthalene isomer over other dialkylated naphthalenes. The adsorbant bed is then contacted with a desorbant capable of desorbing the 2,6-diisopropylnaphthalene from the pores of the adsorbant.

48533572, Aug 1, 1989

Sep 30, 1987

7/103442

Janis Vasilevskis - Los Gatos CA
Jacques C. De Deken - Palo Alto CA
Robert J. Saxton - Mountain View CA
Paul R. Wentrcek - Redwood City CA
Jere D. Fellmann - Livermore CA
Lyubov S. Kipnis - Sunnyvale CA

Catalytica Associates - Mountain View CA

B01J 3102

502165

The additional of redox-active metal components and ligands, alternatively or simultaneously, results in increased conversion and selectivity in the palladium-catalyzed oxidation of olefins to carbonyl products in the presence of polyoxoanions. In preferred modes, heteropolyoxoanions and Isopolyoxoanions containing tungsten, molybdenum and vanadium, individually or in combination, are described. The use of copper as the redox-active metal component shows reduced allylic reactivity. The elimination of chloride from the catalyst system provides substantial engineering advantages over the prior art, particularly, the reduction of corrosion and chloro-organic by-product formation. The use of redox-active metal components and/or ligands makes the palladium-polyoxoanion catalyst system industrially practicable.

50031228, Mar 26, 1991

Oct 5, 1988

7/254284

Jere D. Fellman - Livermore CA
Robert J. Saxton - Sunnyvale CA
Paul R. Wentrcek - Redwood City CA
Eric G. Derouane - Namur, BE

Catalytica, Inc. - Mountain View CA

C07C 268

585467

The selective isopropylation of a naphthyl compound to diisopropylnaphthalene enhanced in the 2,6-diisopropylnaphthalene isomer is obtained in the presence of an acidic crystalline molecular sieve catalyst having twelve membered oxygen rings. The catalyst pore aperture dimension ranges from 5. 5. ANG. to 7. 0. ANG. The use of these shape selective catalysts results in a diisopropylnaphthalene stream which is enhanced in. beta. isomers and enhanced in the desired 2,6-diisopropylnaphthalene isomer. A particularly preferred catalyst is synthetic Mordenite. Specific catalyst modifications are also described to improve selectivity to the desired 2,6-diisopropylnaphthalene isomer.

52685233, Dec 7, 1993

Jan 23, 1992

7/659416

Jere D. Fellmann - Livermore CA
Paul R. Wentrcek - Redwood City CA
Peter H. Kilner - Sunnyvale CA

Catalytica, Inc. - Mountain View CA

C07C 264
C07C 268
C07C 712

585446

The invention relates to a process for the separation cf various dialkyl multinuclear aromatic compounds from a feed stream of mixed isomers of those compounds. A shape selective adsorbent is employed resulting in a process that is more efficient than processes based upon prior separation techniques. Of special interest are combination processes involving synthesis steps followed by sorption steps using the same shape selective materials.

50269429, Jun 25, 1991

Dec 12, 1989

7/438496

Jere D. Fellmann - Livermore CA
Robert J. Saxton - Sunnyvale CA
Paul R. Wentrcek - Redwood City CA
Eric G. Derouane - Namur, BE
Pascale Massiani - Sunnyvale CA

Catalytica, Inc. - Mountain View CA

C07C 268

585467

The selective isopropylation of a naphthyl compound to diisopropylnaphthalene enhanced in the 2,6-diisopropylnaphthalene isomer is obtained in the presence of an acidic crystalline molecular sieve catalyst having twelve membered oxygen rings. The catalyst pore aperture dimension range from 5. 5. ANG. to 7. 0. ANG. The user of these shape selective catalysts results in a diisopropylnephthalene stream which is enhanced in. beta. isomers and enhanced in the desired 2,6-diisopropylnaphthalene isomer. A particularly preferred catalyst is synthetic Mordenite having a specific Si/Al ratio and NMR characteristics. Specific catalyst modifications are also described to improve selectivity to the desired 2,6-diisopropylnaphthalene isomer.

47230410, Feb 2, 1988

Mar 31, 1986

6/846554

Janis Vasilevskis - Los Gatos CA
Jacques C. De Deken - Palo Alto CA
Robert J. Saxton - Mountain View CA
Paul R. Wentrcek - Redwood City CA
Jere D. Fellmann - Livermore CA
Lyubov S. Kipnis - Sunnyvale CA

Catalytica Associates - Mountain View CA

C07C 4534

568401

The addition of redox-active metal components and ligands, alternatively or simultaneously, results in increased conversion and selectivity in the palladium-catalyzed oxidation of olefins to carbonyl products in the presence of polyoxoanions. In preferred modes, heteropolyoxoanions and isopolyoxoanions containing tungsten, molybdenum and vanadium, individually or in combination, are described. The use of copper as the redox-active metal component shows reduced allylic reactivity. The elimination of chloride from the catalyst system provides substantial engineering advantages over the prior art, particularly, the reduction of corrosion and chloro-organic by-product formation. The use of redox-active metal components and/or ligands makes the palladium-polyoxoanion catalyst system industrially practicable.

50269402, Jun 25, 1991

Sep 8, 1989

7/404665

Jere Fellmann - Livermore CA
Paul Wentrcek - Redwood City CA
Phat T. Lu - San Jose CA

Catalytica, Inc. - Mountain View CA

C07C 268

585467

The selective isopropylation of biphenyl or 4-isopropylbiphenyl to diisopropylbiphenyl while maximizing the yield of the 4,4'-diisopropoylbiphenyl isomer is achieved by carrying out the reaction in the presence of an acidic crystalline molecular sieve with pore aperture 5. 7-6. 1. ANG. , preferably SAPO-11 or ZSM-12.

47204745, Jan 19, 1988

Sep 24, 1985

6/779501

Janis Vasilevskis - Los Gatos CA
Jacques C. De Deken - Palo Alto CA
Robert J. Saxton - Mountain View CA
Paul R. Wentrcek - Redwood City CA
Jere D. Fellmann - Livermore CA
Lyubov S. Kipnis - Sunnyvale CA

Catalytica Associates - Mountain View CA

B01J 3102

502165

The addition of redox-active metal components and ligands, alternatively or simultaneously, results in increased conversion and selectivity in the palladium-catalyzed oxidation of olefins to carbonyl products in the presence of polyoxoanions. In preferred modes, heteropolyoxoanions and isopolyoxoanions containing tungsten, molybdenum and vanadium, individually or in combination, are described. The use of copper as the redox-active metal component shows reduced allylic reactivity. The elimination of chloride from the catalyst system provides substantial engineering advantages over the prior art, particularly, the reduction of corrosion and chloro-organic by-product formation. The use of redox-active metal components and/or ligands makes the palladium-polyoxoanion catalyst system industrially practicable.