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.
Type:
Grant
Filed:
April 27, 1992
Date of Patent:
August 8, 1995
Assignee:
Sun Company, Inc. (R&M)
Inventors:
Vincent A. Durante, Daniel E. Resasco, Darrell W. Walker, Gary L. Haller, Eugene L. Coggins
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.
Type:
Grant
Filed:
July 20, 1992
Date of Patent:
May 9, 1995
Assignee:
Sun Company, Inc. (R&M)
Inventors:
Vincent A. Durante, Darrell W. Walker, Steven M. Gussow, James E. Lyons, Robert C. Hayes
Abstract: Organic hydroperoxides are decomposed by drying a reaction mixture containing the organic hydroperoxide and an organic solvent and contacting the dried reaction mixture with a metal organic ligand catalyst under hydroperoxide decomposition conditions. An organic co-solvent for the hydroperoxide may also be used.
Type:
Grant
Filed:
April 4, 1994
Date of Patent:
March 7, 1995
Assignee:
Sun Company, Inc. (R&M)
Inventors:
Manoj V. Bhinde, James E. Lyons, Paul E. Ellis, Jr.
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.
Type:
Grant
Filed:
July 30, 1993
Date of Patent:
January 31, 1995
Assignee:
Sun Company, Inc. (R&M)
Inventors:
Vincent A. Durante, James E. Lyons, Darrell W. Walker
Abstract: New compositions of matter comprising cyano-substituted metal complexes of porphyrins are catalysts for the oxidation of alkanes. The metal is iron, chromium, manganese, ruthenium, copper or cobalt. The porphyrin ring has cyano groups attached thereto in meso and/or .beta.-pyrrolic positions.
Abstract: A process for regeneration of spent sulfated and calcined solid superacid catalyst is disclosed. Said process comprises heating said catalyst to a temperature of approximately 450.degree. C. and contacting said catalyst with a gas stream comprising oxygen or air and sulfur dioxide. This regeneration process can be performed in situ.
Abstract: As a new composition of matter, alkali metal or ammonium or tetraalkylammonium diazidoperfluorophthalocyanatoferrate. Other embodiments of the invention comprise compositions wherein the metal of the coordination complex is cobalt, manganese and chromium.
Abstract: Hydroperoxides are decomposed by contact with metalloporphyrin coordination complex catalysts in which hydrogen in the porphyrin molecule has been substituted with at least one nitro group and may be further substituted with other electron-withdrawing elements or groups, for example, halogen or halocarbons, or with hydrocarbon groups. Preferred catalysts are iron tetranitro-.beta.-octaethylporphyrins and iron tetrakispentafluorophenyl-.beta.-nitroporphyrins.
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.
Type:
Grant
Filed:
September 20, 1993
Date of Patent:
September 6, 1994
Assignee:
Sun Company, Inc. (R&M)
Inventors:
Vincent A. Durante, James E. Lyons, Darrell W. Walker, Bonita K. Marcus
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.
Type:
Grant
Filed:
June 15, 1993
Date of Patent:
September 6, 1994
Assignee:
Sun Company, Inc. (R&M)
Inventors:
James E. Lyons, Vincent A. Durante, Darrell W. Walker
Abstract: Alkanes are catalytically oxidized using heteropolyacids (HPAs) or polyoxoanions (POAs) deposited on a graphite surface. The HPAs and POAs are framework-substituted with a different metal in place of a metal-oxygen unit.
Type:
Grant
Filed:
July 30, 1993
Date of Patent:
August 2, 1994
Assignee:
Sun Company, Inc.
Inventors:
Shahid N. Shaikh, Paul E. Ellis, Jr., James E. Lyons
Abstract: New catalyst compositions comprise sulfated and calcined mixtures of (1) a support comprising an oxide or hydroxide of a Group IV-A element, (2) an oxide or hydroxide of molybdenum, and (3) an oxide or hydroxide of a Group I-B, II-B, III-A, III-B, IV-B, V-A or VI-A metal other than molybdenum or a metal of the Lanthanide Series of the Periodic Table. A process for alkylation of acyclic saturated compounds with acyclic unsaturated compounds utilizing such catalyst compositions.
Type:
Grant
Filed:
December 17, 1992
Date of Patent:
June 14, 1994
Assignee:
Sun Company, Inc. (R&M)
Inventors:
Howard P. Angstadt, Elmer J. Hollstein, Chao-Yang Hsu
Abstract: New catalyst compositions comprise sulfated and calcined mixtures of (1) a support comprising an oxide or hydroxide of a Group IV-A element, (2) an oxide or hydroxide of a Group VI, VII or VIII metal, (3) an oxide or hydroxide of a Group I-B, II-B, III-A, III-B, IV-B, V-A or VI-A metal and (4) a metal of the Lanthanide Series of the Periodic Table. A process for alkylation of acyclic saturated compounds with acyclic unsaturated compounds utilizing such catalyst compositions.
Type:
Grant
Filed:
December 17, 1992
Date of Patent:
May 10, 1994
Assignee:
Sun Company, Inc.
Inventors:
Howard P. Angstadt, Elmer J. Hollstein, Chao-Yang Hsu
Abstract: A process for the processing or upgrading of heavy oil fractions containing polynuclear aromatics is disclosed. The process comprises selectively oxidizing a feedstock under low severity conditions in a multi-phase system, wherein one phase is an aqueous and contains water-soluble catalyst, deoxygenating that product followed by hydroprocessing to yield a substantially mononuclear product.
Abstract: Compositions of matter comprising nitro-substituted metal complexes of porphyrins are catalysts for the oxidation of alkanes. The metal is iron, chromium, manganese, ruthenium, copper or cobalt. The porphyrin ring has nitro groups attached thereto in meso and/or .beta.-pyrrolic positions.
Abstract: Barium peroxide oxidizer, together with a transition metal from Group I, III, IV, V, VII or VIII or compound thereof is used as stoichiometric reagent in the oxidative dimerization of hydrocarbons having three or four carbon atoms. Barium peroxide oxidizer, together with a transition metal from Group I, III, IV, V, VI, VII or VIII or compound thereof is used as stoichiometric reagent in the dehydrogenation of hydrocarbons having three or four carbon atoms.
Abstract: As a new composition of matter, alkali metal or ammonium or tetraalkylammonium diazidoperfluorophthalocyanatoferrate. Method of oxidizing alkanes by contact with a catalyst comprising diazido derivative of a metal phthalocyanine, including halogenated phthalocyanines. Method of oxidizing alkanes by contact with a catalyst comprising a metal phthalocyanine or halide thereof, including halogenated phthalocyanines, and an alkali metal or ammonium or tetraalkylammonium azide.
Abstract: The hydroxyl group in a pyrrolic compound having in the 2-position thereof a group having the formula R(OH)CH--R is hydrocarbyl or substituted hydrocarbyl, is replaced by a group, for example a p-nitrobenzoate group, having better leaving properties than those of hydroxyl for a subsequent self-condensation and cyclization of the pyrrolic compound to form a meso-hydrocarbyl or meso-substituted hydrocarbyl porphyrin.
Abstract: Barium peroxide oxidizer, together with a transition metal from Group I, III, IV, V, VII or VIII or compound thereof is used as stoichiometric reagent in the oxidative dimerization of hydrocarbons having three or four carbon atoms. Barium peroxide oxidizer, together with a transition metal from Group I, III, IV, V, VI, VII or VIII or compound thereof is used as stoichiometric reagent in the dehydrogenation of hydrocarbons having three or four carbon atoms.