Darrell Wayne Walker

US Patent:

54141575, May 9, 1995

Filed:

Jul 20, 1992

Appl. No.:

7/916915

Inventors:

Vincent A. Durante - West Chester PA
Darrell W. Walker - Visalia CA
Steven M. Gussow - Glen Mills PA
James E. Lyons - Wallingford PA
Robert C. Hayes - Media PA

Assignee:

Sun Company, Inc. (R&M) - Philadelphia PA

International Classification:

C07C 2900
C07C 3506

US Classification:

568840

Abstract:

Process and apparatus are provided for oxidation of oxidation of organic compounds in which a reaction zone is provided, containing an open space and a bed of solid granular catalyst, an organic feedstock and oxygen are passed in gas phase through the open space and then into contact with the catalyst bed, and reaction products are removed from the open space after relatively less contact with the catalyst, and from at least one other location after relatively greater contact with the catalyst. Greater yield of desired product may be obtained in such operation than in operation where all of the reaction products are removed after the greater contact with the catalyst.

US Patent:

54398592, Aug 8, 1995

Filed:

Apr 27, 1992

Appl. No.:

7/874499

Inventors:

Vincent A. Durante - West Chester PA
Daniel E. Resasco - Media PA
Darrell W. Walker - Visalia CA
Gary L. Haller - Hamden CT
Eugene L. Coggins - Malvern PA

Assignee:

Sun Company, Inc. (R&M) - Philadelphia PA

International Classification:

B01J 29064
B01J 29072

US Classification:

502 66

Abstract:

Alkanes are dehydrogenated by passage through alternating dehydrogenation zones and selective oxidation zone(s), in which latter zone(s) hydrogen produced in the preceding endothermic dehydrogenation reaction is selectively oxidized to generate heat for the succeeding dehydrogenation reaction. New catalyst compositions are prepared comprising reduced and sulfided nickel crystallites on siliceous supports which have been treated with chromium compounds and oxidized to provide surface-anchored chromyl species. Also new catalyst compositions are prepared by sulfiding nickel-containing compositions with carbonaceous sulfur compounds such as dialkylsulfoxides. Another embodiment of the invention is catalyst and dehydrogenation therewith, in which pores having radius of 50 to 200 Angstroms occupy pore volume from 0. 30 to 1. 50 ml per gram of the support, and pores having radius of 20 to 50 Angstroms occupy pore volume less than 0. 1 ml per gram of the support.

US Patent:

57335184, Mar 31, 1998

Filed:

Jul 10, 1996

Appl. No.:

8/678016

Inventors:

Vincent A. Durante - West Chester PA
Daniel E. Resasco - Media PA
Darrell W. Walker - Visalia CA
Gary L. Haller - Hamden CT
Eugene L. Coggins - Malvern PA

Assignee:

Sun Company, Inc. (R&M) - Philadelphia PA

International Classification:

C01B 300

US Classification:

423248

Abstract:

The invention comprises a process for selectively oxidizing hydrogen in a mixture with other gaseous materials by contacting the hydrogen containing gas under oxidation conditions with a catalyst comprising a phosphate of a metal wherein the metal is selected from the group consisting of germanium, tin, lead, arsenic, antimony and bismuth.

US Patent:

53860748, Jan 31, 1995

Filed:

Jul 30, 1993

Appl. No.:

8/100595

Inventors:

Vincent A. Durante - West Chester PA
James E. Lyons - Wallingford PA
Darrell W. Walker - Visalia CA

Assignee:

Sun Company, Inc. (R&M) - Philadelphia PA

International Classification:

C07C 5327

US Classification:

585658

Abstract:

Barium peroxide in which has been incorporated a transition metal compound is used as a catalyst for the oxidative dehydrogenation of organic compounds in the presence of terminal oxidants.

US Patent:

52200809, Jun 15, 1993

Filed:

Jun 29, 1992

Appl. No.:

7/905952

Inventors:

James E. Lyons - Wallingford PA
Vincent A. Durante - West Chester PA
Darrell W. Walker - Visalia CA

Assignee:

Sun Company, Inc. (R&M) - Philadelphia PA

International Classification:

C07C 2950
C07C 3104

US Classification:

568910

Abstract:

A process for the direct catalytic oxidation of methane to methanol comprises chromium chemically bound to the oxygen of a metal oxide catalytic support surface. The support may comprise silica, alumina, magnesia, titania, or zirconia.

US Patent:

53450108, Sep 6, 1994

Filed:

Jun 15, 1993

Appl. No.:

8/076990

Inventors:

James E. Lyons - Wallingford PA
Vincent A. Durante - West Chester PA
Darrell W. Walker - Visalia CA

Assignee:

Sun Company, Inc. (R&M) - Philadelphia PA

International Classification:

C07C 2950
C07C 3104

US Classification:

568910

Abstract:

A process for the direct catalytic oxidation of methane to methanol comprises separately contacting chromium chemically bound to the oxygen of a metal oxide support surface with (1) methane and (2) oxidant. The support may comprise silica, alumina, magnesia, titania, or zirconia.

US Patent:

53450116, Sep 6, 1994

Filed:

Sep 20, 1993

Appl. No.:

8/124087

Inventors:

Vincent A. Durante - West Chester PA
James E. Lyons - Wallingford PA
Darrell W. Walker - Visalia CA
Bonita K. Marcus - Radnor PA

Assignee:

Sun Company, Inc. (R&M) - Philadelphia PA

International Classification:

C07C 2700
C07C 2950
C07C 3104
C07C 3108

US Classification:

568910

Abstract:

Aluminophosphates containing manganese in the structural framework are employed for the oxidation of alkanes, for example the vapor phase oxidation of methane to methanol.

Author:

Darrell Walker

ISBN #:

0595159532