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).

  • Publication number: 20230312433
    Abstract: The present disclosure provides catalyst compositions and processes for the conversion of low-cost short chain alkanes to high value liquid transportation fuels and chemicals. The present disclosure provides methods of making said catalyst compositions.
    Type: Application
    Filed: February 11, 2022
    Publication date: October 5, 2023
    Inventors: Jihad M. Dakka, David O. Marler, Avelini Corma Canos, Pasquel Ona Burgos
  • Patent number: 11584699
    Abstract: The present disclosure generally relates to a process for converting a hydrocarbon feed including introducing a hydrocarbon feed comprising a C1+ alkane to a catalyst composition in a reactor, the catalyst composition comprising a Group 6-Group 15 metal supported on a support; and irradiating the hydrocarbon feed and the catalyst composition with electromagnetic energy in the reactor at reactor conditions to produce a product comprising a C2+ alkane, wherein the C2+ alkane of the product is heavier than the C1+ alkane in the hydrocarbon feed.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: February 21, 2023
    Assignee: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY
    Inventors: Kun Wang, David O. Marler
  • Patent number: 11291984
    Abstract: Provided herein are transition metal complexes that are useful in the acceptorless dehydrogenation of various substrates, including alkanes. Also provided are methods of dehydrogenating substrates to provide unsaturated products such as olefins.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: April 5, 2022
    Assignees: Rutgers, The State University of New Jersey, ExxonMobil Research and Engineering Company
    Inventors: Alan S. Goldman, Santanu Malakar, Xiaoguang Zhou, Kun Wang, David O. Marler
  • Publication number: 20210291154
    Abstract: Provided herein are transition metal complexes that are useful in the acceptorless dehydrogenation of various substrates, including alkanes. Also provided are methods of dehydrogenating substrates to provide unsaturated products such as olefins.
    Type: Application
    Filed: March 23, 2021
    Publication date: September 23, 2021
    Inventors: Alan S. Goldman, Santanu Malakar, Xiaoguang Zhou, Kun Wang, David O. Marler
  • Publication number: 20210188738
    Abstract: The present disclosure generally relates to a process for converting a hydrocarbon feed including introducing a hydrocarbon feed comprising a C1+ alkane to a catalyst composition in a reactor, the catalyst composition comprising a Group 6-Group 15 metal supported on a support; and irradiating the hydrocarbon feed and the catalyst composition with electromagnetic energy in the reactor at reactor conditions to produce a product comprising a C2+ alkane, wherein the C2+ alkane of the product is heavier than the C1+ alkane in the hydrocarbon feed.
    Type: Application
    Filed: November 2, 2020
    Publication date: June 24, 2021
    Inventors: Kun Wang, David O. Marler
  • Patent number: 10883088
    Abstract: Oxygenases and methods of biologically upgrading hydrocarbon streams, such as crude oil, using oxygenases are provided herein. The oxygenases can be used to remove impurities such as metals, heteroatoms, or asphaltenes from a hydrocarbon stream. In some cases, the oxygenases can be chemically or genetically modified and can be used in different locations such as petroleum wells, pipes, reservoirs, tanks and/or reactors.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: January 5, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Zarath M. Summers, David O. Marler, Jay B. Patel, Katherine G. Landuyt
  • Publication number: 20190276952
    Abstract: The present disclosure relates to methods for using functional molecules and other structural carbon-based molecules with rigid backbones and kinked segments to alter the interactions between molecules, and consequently improve/modify the properties of materials. In particular, the disclosure provides methods for using functional molecules and other structural carbon-based molecules with rigid backbones and kinked segments as (1) precursors for carbon fiber, (2) “molecular agents” to separate and/or link ?-? stacked aromatic systems, 3) stabilizers in composite materials to achieve better blending of matrix with fiber reinforcement, and/or (4) one of the components in carbon fibers to achieve better mechanical properties.
    Type: Application
    Filed: March 7, 2019
    Publication date: September 12, 2019
    Inventors: David O. Marler, Srinivasan Rajagopalan, Dhaval Bhandari, Huaxing Zhou, M. G. Finn
  • Publication number: 20190178066
    Abstract: Dioxygenases and methods of biologically upgrading hydrocarbon streams, such as crude oil, using dioxygenases are provided herein. The dioxygenases can be used to remove impurities such as metals, heteroatoms, or asphaltenes from a hydrocarbon stream. In some cases, the dioxygenases can be chemically or genetically modified and can be used in different locations such as petroleum wells, pipes, reservoirs, tanks and/or reactors.
    Type: Application
    Filed: November 12, 2018
    Publication date: June 13, 2019
    Inventors: Zarath M. Summers, David O. Marler, Jay B. Patel, Katherine G. Landuyt
  • Publication number: 20190177703
    Abstract: Oxygenases and methods of biologically upgrading hydrocarbon streams, such as crude oil, using oxygenases are provided herein. The oxygenases can be used to remove impurities such as metals, heteroatoms, or asphaltenes from a hydrocarbon stream. In some cases, the oxygenases can be chemically or genetically modified and can be used in different locations such as petroleum wells, pipes, reservoirs, tanks and/or reactors.
    Type: Application
    Filed: November 12, 2018
    Publication date: June 13, 2019
    Inventors: Zarath M. Summers, David O. Marler, Jay B. Patel, Katherine G. Landuyt
  • Publication number: 20110152062
    Abstract: Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50° C. to 200° C. for a period of time of about 0.1 to 1.0 hour. The dried catalyst particles can be removed from the substrate by several techniques, including scraping, burning, and deforming the substrate material, The resulting catalytic particles can be produced in an amount of about ca. 3 g to 300 g from slurries with volumes between 5 cc to 500 cc, which are suitable for small scale FCC reactors and for high throughput experimentation.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 23, 2011
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: William A. Wachter, Brenda A. Raich, Theodore E. Datz, David O. Marler, Nicholas Rollman, Jeffrey T. Elks, Gordon F. Stuntz
  • Patent number: 7867937
    Abstract: Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50° C. to 200° C. for a period of time of about 0.1 to 1.0 hour. The dried catalyst particles can be removed from the substrate by several techniques, including scraping, burning, and deforming the substrate material. The resulting catalytic particles can be produced in an amount of about ca. 3 g to 300 g from slurries with volumes between 5 cc to 500 cc, which are suitable for small scale FCC reactors and for high throughput experimentation.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: January 11, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: William A. Wachter, Jeffrey T. Elks, Brenda A. Raich, Theodore E. Datz, Mary T. Van Nostrand, Gordon F. Stuntz, David O. Marler, Nicholas Rollman
  • Patent number: 7816573
    Abstract: The invention relates to a process for converting hydrocarbons with a catalyst comprising a crystalline molecular sieve composition which is obtainable by crystallizing a pre-formed extrudate mixture in a reactor and, during crystallization, removing excess alkali metal hydroxide from the pre-formed extrudate. The pre-formed extrudate mixture comprises at least one source of ions of tetravalent element Y, at least one source of alkali metal hydroxide, water, optionally at least one seed crystal, and optionally at least one source of ions of trivalent element X. The reaction mixture has the following mole composition: Y:X2=10 to infinity; OH?:Y=0.001 to 2; and M+:Y=0.001 to 2; wherein M is an alkali metal. The amount of water in the mixture is at least sufficient to permit extrusion of said reaction mixture.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: October 19, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Wenyih Frank Lai, Robert Ellis Kay, Christine N. Elia, Frederick Y. Lo, David O. Marler
  • Patent number: 7419928
    Abstract: A process for enhancing the activity of a catalyst metal particulate for hydrogenation reactions comprising calcining the particulate in an oxidant-containing atmosphere to partially oxidize it thereby forming a porous layer of oxides thereon, treating with an solution capable of oxidizing the calcined metal particulate and comprising a compound of a hydrogenation catalyst metal to where said metal particulate has absorbed a volume of solution equal to at least about 10% of its calculated pore volume and activating it by treatment with a hydrogen-containing gas at elevated temperatures thereby forming a dispersed active metal catalyst. Preferably, the treated particulate is calcined a second time under the same conditions as the first before final activation with a hydrogen-containing gas. The metal particulate is preferably sized after each calcination and any agglomerates larger than 250 microns are comminuted to a desired size.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: September 2, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler
  • Publication number: 20080146435
    Abstract: Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50° C. to 200° C. for a period of time of about 0.1 to 1.0 hour. The dried catalyst particles can be removed from the substrate by several techniques, including scraping, burning, and deforming the substrate material. The resulting catalytic particles can be produced in an amount of about ca. 3g to 300g from slurries with volumes between 5 cc to 500 cc, which are suitable for small scale FCC reactors and for high throughput experimentation.
    Type: Application
    Filed: December 11, 2007
    Publication date: June 19, 2008
    Inventors: William A. Wachter, Jeffrey T. Elks, Brenda A. Raich, Theodore E. Datz, Mary T. Van Nostrand, Gordon F. Stuntz, David O. Marler, Nicholas Rollman
  • Patent number: 7361619
    Abstract: Dispersed Active Metal catalyst for hydrogenation reactions is produced by treating a substantially catalytically inactive metal particulate with a solution capable of oxidizing the metal particulate and comprising of at least one compound of a hydrogenation catalyst metal thereby forming a layer of at least one of hydroxides and oxides thereon. The metal particulate is activated by treatment with a hydrogen-containing gas at elevated temperatures to form a porous layer of Dispersed Active Metal catalyst. Preferably, the treated metal particulate is dried prior to activation, and also preferably calcined in an oxidant-containing atmosphere prior to activation. The treatment solution may advantageously contain a compound of at least one promoter metal for the added catalyst metal. The porosity of the layer provides enhanced catalyst activity as well as improved methane selectivity in the Fischer-Tropsch process.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: April 22, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler
  • Publication number: 20070191659
    Abstract: The invention relates to a crystalline molecular sieve composition which is obtainable by crystallizing a pre-formed extrudate mixture in a reactor and, during crystallization, removing excess alkali metal hydroxide from the pre-formed extrudate. The pre-formed extrudate mixture comprises at least one source of ions of tetravalent element Y, at least one source of alkali metal hydroxide, water, optionally at least one seed crystal, and optionally at least one source of ions of trivalent element X. The reaction mixture has the following mole composition: Y:X2=10 to infinity; OH?:Y=0.001 to 2; and M+:Y=0.001 to 2; wherein M is an alkali metal. The amount of water in the mixture is at least sufficient to permit extrusion of said reaction mixture.
    Type: Application
    Filed: January 26, 2007
    Publication date: August 16, 2007
    Inventors: Wenyih Frank Lai, Robert Ellis Kay, Christine N. Elia, Frederick Y. Lo, David O. Marler
  • Publication number: 20040204505
    Abstract: Dispersed Active Metal catalyst for hydrogenation reactions is produced by treating a substantially catalytically inactive metal particulate with a solution capable of oxidizing the metal particulate and comprising of at least one compound of a hydrogenation catalyst metal thereby forming a layer of at least one of hydroxides and oxides thereon. The metal particulate is activated by treatment with a hydrogen-containing gas at elevated temperatures to form a porous layer of Dispersed Active Metal catalyst. Preferably, the treated metal particulate is dried prior to activation, and also preferably calcined in an oxidant-containing atmosphere prior to activation. The treatment solution may advantageously contain a compound of at least one promoter metal for the added catalyst metal. The porosity of the layer provides enhanced catalyst activity as well as improved methane selectivity in the Fischer-Tropsch process.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 14, 2004
    Inventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler
  • Publication number: 20040204504
    Abstract: A process for enhancing the activity of a catalyst metal particulate for hydrogenation reactions comprising calcining the particulate in an oxidant-containing atmosphere to partially oxidize it thereby forming a porous layer of oxides thereon, treating with an solution capable of oxidizing the calcined metal particulate and comprising a compound of a hydrogenation catalyst metal to where said metal particulate has absorbed a volume of solution equal to at least about 10% of its calculated pore volume and activating it by treatment with a hydrogen-containing gas at elevated temperatures thereby forming a dispersed active metal catalyst. Preferably, the treated particulate is calcined a second time under the same conditions as the first before final activation with a hydrogen-containing gas. The metal particulate is preferably sized after each calcination and any agglomerates larger than 250 microns are comminuted to a desired size.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 14, 2004
    Inventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler
  • Patent number: 6146520
    Abstract: A process for reducing the Mutagenicity Index and/or the PCA content of a lubricating oil extract by re-extracting a lubricating oil extract with a second extraction solvent, different from the first extraction solvent, to form a secondary raffinate and a secondary extract mix; separating the secondary raffinate from the secondary extract mix; and separating the secondary raffinate and the secondary extract from said second extraction solvent.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: November 14, 2000
    Assignee: Mobil Oil Corporation
    Inventors: Anagha Avinash Gupte, David O. Marler
  • Patent number: 6143261
    Abstract: MCM-56 and MCM-49 have been demonstrated to be effective catalysts for the reduction of nitrogen oxide (NO.sub.x) emissions in a net oxidizing environment such as Selective Catalytic Reduction or lean burn engine exhaust applications. MCM-56 and MCM-49 can be utilized as a component of a spherical or cylindrical catalyst particle or as a wash coat on a ceramic or metallic monolith. Optionally, a transition metal such as copper, can be added to the catalyst for improved activity.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: November 7, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Daria N. Lissy, David O. Marler, John P. McWilliams, David S. Shihabi, Sanjay B. Sharma