Patents by Inventor David O. Marler
David O. Marler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 5900520Abstract: Alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a paraffin alkylating agent under alkylation reaction conditions in the presence of catalyst comprising synthetic porous crystalline material characterized by an X-ray diffraction pattern including interplanar d-spacings at 12.36.+-.0.4, 11.03.+-.0.2, 8.83.+-.0.14, 6.18.+-.0.12, 6.00.+-.0.10, 4.06.+-.0.07, 3.91.+-.0.07, and 3.42.+-.0.06 Angstroms.Type: GrantFiled: January 23, 1995Date of Patent: May 4, 1999Assignee: Mobil Oil CorporationInventors: Dominick N. Mazzone, David O. Marler, Kathleen M. Keville, Larry A. Green
-
Patent number: 5780703Abstract: A process for converting at least one olefin and at least one isoparaffin to a diesel fuel blending component comprising the steps of contacting the olefin and the isoparaffin with a catalyst comprising an acidic solid comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal to provide a diesel fuel. Process conditions can be varied to favor the formation of gasoline, distillate, lube range products or mixtures thereof.Type: GrantFiled: August 9, 1995Date of Patent: July 14, 1998Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Stuart D. Hellring, David O. Marler, Jose G. Santiesteban, James C. Vartuli
-
Patent number: 5705724Abstract: A process is disclosed for the production of alkylaromatic compounds employing olefinic liquid from thermally or catalytically cracked plastics as alkylating agent. The process comprises contacting a feedstream comprising alkylatable aromatics and the olefinic liquid with acidic alkylation catalyst under alkylation conditions in an alkylation zone; and recovering an effluent stream comprising alkylaromatic compounds. The alkylation can be performed with the product of plastics pyrolysis or with non-degraded plastic feedstock in-situ with thermal/catalytic degradation of the plastic.Type: GrantFiled: October 26, 1995Date of Patent: January 6, 1998Assignee: Mobil Oil CorporationInventors: Nick A. Collins, Larry A. Green, Anagha A. Gupte, David O. Marler, William J. Tracy, III
-
Patent number: 5639931Abstract: At least one olefin and at least one isoparaffin are converted to a diesel fuel blending component by contacting the olefin and the isoparaffin with a catalyst selected from MCM-22, MCM-36, MCM-49, and MCM-56 to provide a product containing a diesel fuel.Type: GrantFiled: June 2, 1995Date of Patent: June 17, 1997Assignee: Mobil Oil CorporationInventors: Stuart D. Hellring, Albin Huss, Jr., Michael E. Landis, David O. Marler, Gerald J. Teitman, Hye Kyung C. Timken, Jeffrey C. Trewella
-
Patent number: 5624964Abstract: A process for integration of a steam reforming unit and a cogeneration power plant in which said steam reforming unit comprises two communicating fluid beds; the first fluid bed comprising a reformer containing catalyst and which is used to react steam and light hydrocarbons at conditions sufficient to produce a mixture comprising synthesis gas hydrogen, carbon monoxide, and carbon dioxide, the second fluid bed comprising a combustor-regenerator which receives spent catalyst from the first fluid bed and which provides heat to heat the catalyst and balance the reaction endotherm, by combusting fuel gas in direct contact with the catalyst producing hot flue gas; said cogeneration power plant comprises a gas turbine equipped with an air compressor and a combustor; said integration which comprises drawing off a portion of compressed air from the power plant gas turbine air compressor leaving remainder compressed air; introducing the drawn off compressed air to the combustor-regenerator; mixing the hot flue gas frType: GrantFiled: June 6, 1995Date of Patent: April 29, 1997Assignee: Mobil Oil CorporationInventors: Ronald J. Cimini, David O. Marler, Reuel Shinnar, Gerald J. Teitman
-
Patent number: 5609752Abstract: There is provided a process for increasing the Cetane Index of a distillate fraction by reacting the fraction with hydrogen over a catalyst comprising a hydrogenation component, such as platinum, and zeolite Beta. The process results in the selective ring opening of cyclic compounds, such as aromatics, with a minimum of cracking of paraffinic hydrocarbons.Type: GrantFiled: December 12, 1995Date of Patent: March 11, 1997Assignee: Mobil Oil CorporationInventors: Kenneth J. Del Rossi, Gregory A. Jablonski, David O. Marler
-
Patent number: 5609845Abstract: There is provided a process for the catalytic production of hydrogen from the reaction of hydrogen sulfide and carbon monoxide with the elimination of the carbonyl sulfide and/or sulfur dioxide by-products. The carbonyl sulfide and the sulfur dioxide are combusted or reacted in one or more reaction steps with each other, oxygen and/or hydrogen sulfide to produce carbon dioxide, water, sulfur or sulfuric acid or a combination of these.Type: GrantFiled: February 8, 1995Date of Patent: March 11, 1997Assignee: Mobil Oil CorporationInventors: Ronald J. Cimini, David O. Marler, Stephen J. McCarthy, Harry A. McVeigh, Gerald J. Teitman
-
Patent number: 5610112Abstract: A process for shape selective hydrocarbon conversion involves contacting a hydrocarbon feedsteam under conversion conditions with a modified catalytic molecular sieve which has been modified by being pre-selectivated with a first silicon source, then steamed. The feedstream may also contain a second silicon source which is a high efficiency para-xylene selectivating agent. The method for modifying the molecular sieve is also described.Type: GrantFiled: June 23, 1994Date of Patent: March 11, 1997Assignee: Mobil Oil CorporationInventors: Rudolph M. Lago, David O. Marler, Sharon B. McCullen
-
Patent number: 5583276Abstract: A process for converting at least one olefin and at least one isoparaffin to a diesel fuel blending component comprising the steps of contacting the olefin and the isoparaffin with a catalyst comprising MCM-58 to provide a diesel fuel. Process conditions can be varied to favor the formation of gasoline, distillate, lube range products or mixtures thereof.Type: GrantFiled: May 16, 1995Date of Patent: December 10, 1996Assignee: Mobil Oil CorporationInventors: Stuart D. Hellring, Charles T. Kresge, David O. Marler, Ernest W. Valyocsik
-
Patent number: 5552357Abstract: A process for shape selective hydrocarbon conversion involves contacting a hydrocarbon feedstream under conversion conditions with a catalytic molecular sieve which has been modified by treatment with an amino silane polymer while molecular sieve acid sites are protected. When the process is toluene disproportionation, a toluene feedstream may also contain a second silicon source which is a high p-xylene selectivating agent. The invention also includes the modification method and the shape selective catalyst which results from the modification.Type: GrantFiled: August 25, 1994Date of Patent: September 3, 1996Assignee: Mobil Oil CorporationInventors: Rudolph M. Lago, David O. Marler, Sharon B. McCullen, David H. Olson
-
Patent number: 5475178Abstract: There is provided a catalyst comprising a heteropoly acid, such as phosphotungstic acid, supported on a mesoporous crystalline material, such as M41S. A particular form of this M41S support is designated as MCM-41. There is also provided a method for preparing this catalyst by impregnating the heteropoly acid on the support. There is also provided a process for using this catalyst to catalyze acid catalyzed reactions, such as the isomerization of paraffins and the alkylation of aromatics.Type: GrantFiled: August 18, 1994Date of Patent: December 12, 1995Assignee: Mobil Oil Corp.Inventors: Kenneth J. Del Rossi, Gregory A. Jablonski, Charles T. Kresge, Guenter H. Kuehl, David O. Marler, Gayatri S. Rav, Brenda H. Rose
-
Patent number: 5396016Abstract: There is provided a process for isomerizing and/or disproportionating a paraffin over a catalyst comprising MCM-36. Examples of paraffins which may be isomerized and/or disproportionated include those having from 3 to 10 carbon atoms. The reaction may take place in the presence or absence of cofed hydrogen, and the catalyst may optionally include a hydrogenation metal, such as platinum. An example of a particular reaction is the disproportionation of isopentane to produce a product comprising isobutane and branched hexanes.Type: GrantFiled: August 19, 1993Date of Patent: March 7, 1995Assignee: Mobil Oil Corp.Inventors: Gregory A. Jablonski, David O. Marler, Wieslaw J. Roth
-
Patent number: 5371312Abstract: A process for shape selective hydrocarbon conversion involves contacting a hydrocarbon feedstream under conversion conditions with a catalytic molecular sieve which has been modified by treatment with an amino silane polymer while molecular sieve acid sites are protected. When the process is toluene disproportionation, a toluene feedstream may also contain a second silicon source which is a high pxylene selectivating agent. The invention also includes the modification method and the shape selective catalyst which results from the modification.Type: GrantFiled: April 5, 1993Date of Patent: December 6, 1994Assignee: Mobil Oil Corp.Inventors: Rudolph M. Lago, David O. Marler, Sharon B. McCullen, David H. Olson
-
Patent number: 5366945Abstract: There is provided a catalyst comprising a heteropoly acid, such as phosphotungstic acid, supported on a mesoporous crystalline material, such as M41S. A particular form of this M41S support is designated as MCM-41. There is also provided a method for preparing this catalyst by impregnating the heteropoly acid on the support. There is also provided a process for using this catalyst to catalyze acid catalyzed reactions, such as the isomerization of paraffins and the alkylation of aromatics.Type: GrantFiled: December 22, 1992Date of Patent: November 22, 1994Assignee: Mobil Oil Corp.Inventors: Charles T. Kresge, David O. Marler, Gayatri S. Rav, Brenda H. Rose
-
Patent number: 5358628Abstract: Petroleum wax feeds are converted to high Viscosity Index lubricants by a two-step hydrocracking-hydroisomerization process in which the wax feed is initially subjected to hydrocracking under mild conditions with a conversion to non-lube range products of no more than about 30 weight percent of the feed. The hydrocracking is carried out at a hydrogen pressure of at least 1000 psig using an amorphous catalyst which preferentially removes the aromatic components present in the initial feed. The hydrocracked effluent is then subjected to hydroisomerization in a second step using a low acidity dicarboxylic acid-treated zeolite Beta or mordenite catalyst which effects a preferential isomerization on the paraffin components to less waxy, high V.I. isoparaffins. The second stage may be operated at high pressure by cascading the first stage product into the second stage or at a lower pressure, typically from 200 to 1000 psig.Type: GrantFiled: June 15, 1992Date of Patent: October 25, 1994Assignee: Mobil Oil CorporationInventors: Minas R. Apelian, Charles L. Baker, Jr., Thomas F. Degnan, David O. Marler, Dominick N. Mazzone, Dennis E. Walsh
-
Patent number: 5349114Abstract: A process for shape selective hydrocarbon conversion involves contacting a hydrocarbon feedsteam under conversion conditions with a modified catalytic molecular sieve which has been modified by being pre-selectivated with a first silicon source, then steamed. The feedstream may also contain a second silicon source which is a high efficiency para-xylene selectivating agent. The method for modifying the molecular sieve is also described.Type: GrantFiled: April 5, 1993Date of Patent: September 20, 1994Assignee: Mobil Oil Corp.Inventors: Rudolph M. Lago, David O. Marler, Sharon B. McCullen
-
Patent number: 5329059Abstract: A process is provided for disproportionation of an alkylaromatic compound, alkyl being from 1 to about 6 carbon atoms, e.g., toluene and methylnaphthalene, comprising contacting said compound with catalyst comprising an active form of synthetic porous crystalline MCM-49.Type: GrantFiled: July 6, 1993Date of Patent: July 12, 1994Assignee: Mobil Oil Corp.Inventor: David O. Marler
-
Patent number: 5324881Abstract: The alkylation of isoparaffin with olefin to provide alkylate is carried out in the presence of, as catalyst, a supported heteropoly acid. The support may be MCM-41, and the heteropoly acid may be dodecawolframophosphoric acid (i.e., phosphotungstic acid, i.e., H.sub.3 PW.sub.12 O.sub.40).Type: GrantFiled: April 12, 1993Date of Patent: June 28, 1994Assignee: Mobil Oil Corp.Inventors: Charles T. Kresge, David O. Marler, Gayatri S. Rav, Brenda H. Rose
-
Patent number: 5302769Abstract: A polycyclic aromatic is contacted with an alkyl-substituted single ring aromatic, such as toluene, o-, m- or p-xylene or mesitylene, over a catalyst comprising a zeolite, such as zeolite beta, USY or ZSM-5 to alkylate the polycyclic aromatic. The polycyclic aromatic can be a fused polynuclear aromatic, e.g. phenanthrene, or an assembly of two or more cyclic systems, e.g. biphenyl. The polycyclic aromatic can also include carbocyclic systems such as fluorene and naphthalene or heterocyclic systems such as benzothiophene and dibenzothiophene. The polycyclic aromatic can be derived from a cycle oil, coker gas oil, extract of lubricant solvent refining or crude distillate fraction. The transalkylating agent can be derived from a reformate, pyrolysis gasoline or coker naphtha.Type: GrantFiled: December 7, 1992Date of Patent: April 12, 1994Assignee: Mobil Oil CorporationInventors: David O. Marler, Dominick N. Mazzone, L. Deane Rollmann
-
Patent number: 5296428Abstract: There is provided a catalyst comprising MCM-36 and a hydrogenation/dehydrogenation component. A particular example of such a catalyst comprises MCM-36, nickel and tungsten.Type: GrantFiled: August 12, 1992Date of Patent: March 22, 1994Assignee: Mobil Oil Corp.Inventors: Thomas F. Degnan, Kathleen M. Keville, Charles T. Kresge, David O. Marler, Brenda H. Rose, Wieslaw J. Roth, Kenneth G. Simons, deceased, Hye K. C. Timken, James C. Vartuli