George T Lester

US Patent:

39692710, Jul 13, 1976

Filed:

Dec 16, 1974

Appl. No.:

5/533434

Inventors:

George R. Lester - Park Ridge IL

Assignee:

Universal Oil Products Company - Des Plaines IL

International Classification:

B01J 3104
B01J 3112

US Classification:

252430

Abstract:

A method of impregnating a catalytic component on the outer surface of a carrier material at conditions to improve the activity stability as well as the physical stability of the catalytic composite. A carrier material is immersed in an impregnating solution containing a catalytic component and a sulfur-containing carboxylic acid whereby the catalytic component is dispersed on the outer surface of the carrier material without any substantial penetration thereof. Prior to calcining, the impregnated carrier material is further impregnated with an alkaline earth metal salt of an organic acid and the solution evaporated to dryness in contact with the impregnated carrier material.

US Patent:

47600446, Jul 26, 1988

Filed:

Jun 15, 1987

Appl. No.:

7/062024

Inventors:

George C. Joy - Arlington Heights IL
George R. Lester - Park Ridge IL
Richard E. Marinangeli - Arlington Heights IL

Assignee:

Allied-Signal Inc. - Morristown NJ

International Classification:

B01J 2104
B01J 2310
B01J 2340

US Classification:

502303

Abstract:

This invention relates to a catalytic composite comprising a mixture of a primary refractory inorganic oxide having dispersed thereon at least one first active component selected from the group consisting of rare earth oxides and a secondary support consisting of zirconia, titania or cerium oxide having dispersed thereon at least one second active component selected from the group consisting of metals which form a stable sulfide said mixture having at least one main catalytic metal selected from the group consisting of platinum, palladium, rhodium, ruthenium and iridium deposited thereon. This invention also relates to a method of manufacturing said catalytic composite. Finally a method to minimize the formation of H. sub. 2 S when automotive exhaust is contacted with a catalytic composite is also claimed.

US Patent:

39310540, Jan 6, 1976

Filed:

Apr 19, 1974

Appl. No.:

5/462470

Inventors:

George R. Lester - Park Ridge IL

Assignee:

Universal Oil Products Company - Des Plaines IL

International Classification:

B01J 2356
B01J 2374
B01J 2104

US Classification:

252466PT

Abstract:

A method of impregnating a catalytic component as a subsurface layer on a carrier material. The carrier material is immersed in an impregnating solution containing a catalytic component and a dibasic carboxylic acid, with a sulfur-containing carboxylic acid being subsequently added to the solution whereby the catalytic component is dispersed in a subsurface layer on the carrier material and penetration beyond the desired subsurface layer is substantially obviated.

US Patent:

52927040, Mar 8, 1994

Filed:

Oct 6, 1992

Appl. No.:

7/957547

Inventors:

George R. Lester - Park Ridge IL

Assignee:

Allied-Signal Inc. - Morris Township, Morris County NJ

International Classification:

B01J 2364

US Classification:

502309

Abstract:

This application relates to a catalyst and a process using this catalyst to convert or destroy organic compounds including organohalogen compounds. A preferred catalyst contains as catalytic components titania, vanadium oxide, tungsten oxide, tin oxide and at least one noble metal selected from the group consisting of platinum, palladium and rhodium, characterized in that the vanadium oxide, tungsten oxide and noble metals are uniformly dispersed on the titania. The process of this invention comprises contacting the gas stream, which contains organohalogen compounds and other organic compounds, at a temperature of about 200. degree. to about 500. degree. C. with the catalyst described above in the presence of an oxidizing agent and water. The oxidizing agent can be oxygen or air.

US Patent:

51768976, Jan 5, 1993

Filed:

Jun 12, 1991

Appl. No.:

7/714364

Inventors:

George R. Lester - Park Ridge IL

Assignee:

Allied-Signal Inc. - Morris Township, Morris County NJ

International Classification:

C01B 900
A62D 300

US Classification:

423659

Abstract:

This application relates to a catalyst and a process using this catalyst to convert or destroy organic compounds including organohalogen compounds. A preferred catalyst contains as catalytic components titania, vanadium oxide, tungsten oxide, tin oxide and at least one noble metal selected from the group consisting of platinum, palladium and rhodium, characterized in that the vanadium oxide, tungsten oxide and noble metals are uniformly dispersed on the titania. The process of this invention comprises contacting the gas stream, which contains organohalogen compounds and other organic compounds, at a temperature of about 200. degree. to about 500. degree. C. with the catalyst described above in the presence of an oxidizing agent and water. The oxidizing agent can be oxygen or air.

US Patent:

39871096, Oct 19, 1976

Filed:

Feb 18, 1975

Appl. No.:

5/550394

Inventors:

John F. Brennan - Des Plaines IL
George R. Lester - Park Ridge IL

Assignee:

Universal Oil Products Company - Des Plaines IL

International Classification:

C07C 4100

US Classification:

260613R

Abstract:

A polyfunctional phenol is polymerized utilizing a carrier catalyst comprising a palladium carboxylic acid salt in a carboxylic acid medium.

US Patent:

43292607, May 11, 1982

Filed:

Dec 8, 1980

Appl. No.:

6/214356

Inventors:

George R. Lester - Park Ridge IL
Lawrence B. Welsh - Evanston IL

Assignee:

UOP Inc. - Des Plaines IL

International Classification:

B01J 2118
B01J 2340

US Classification:

252446

Abstract:

Integral shaped replication composites which may be useful for supports for catalysts or as adsorbents comprise a carbonaceous pyropolymeric structure which has been prepared by treating an inorganic support with an organic pyropolymer precursor and pyrolyzing the precursor to form a carbonaceous pyropolymer possessing recurring units containing at least carbon and hydrogen atoms on the surface of the support. This carbonaceous pyropolymer will duplicate the physical shape and dimensions of the inorganic support as well as a substantial portion of the pore structure thereof. The integral shaped replication will possess an ABD which is about 25% to 100% of the ABD of the inorganic support, and have a crush strength of from about 0. 5 to about 14 kilograms. The composite comprising the carbonaceous pyropolymer on the surface of the support may then be leached with an acid or base to remove the inorganic support, thus leaving a shaped replication of particle aggregates.

US Patent:

42438314, Jan 6, 1981

Filed:

Jul 30, 1979

Appl. No.:

6/062097

Inventors:

Thomas P. Malloy - Lake Zurich IL
George W. Lester - Hoffman Estates IL

Assignee:

UOP Inc. - Des Plaines IL

International Classification:

C07C 712

US Classification:

585824

Abstract:

A process for the reduction of the peroxide number and color of olefins comprises contacting the olefin with an adsorbent and separating the contacted olefin from the adsorbent. The process is effective for internal olefins, a class of olefins in which reduction of peroxide number by conventional means is ineffective. Examples of effective adsorbents which may be employed in the process includes charcoal, alumina, silica, diatomaceous earth and montmorillonite clays.