Patents Assigned to Mobil Oil Corp.
  • Process for the dealumination of zeolite Beta
    Patent number: 5200168
    Abstract: A process for the dealumination of a zeolite having the structure of zeolite Beta by contacting the zeolite with dicarboxylic acid, such as oxalic acid.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: April 6, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Minas R. Apelian, Thomas F. Degnan, Anthony S. Fung, Gordon J. Kennedy
  • Synthetic mesoporous crystalline material
    Patent number: 5198203
    Abstract: This invention relates to a new synthetic composition of porous crystalline material and use thereof as sorbent and in catalytic conversion of organic and inorganic compounds. The new crystalline material exhibits a large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 10 grams benzene/100 grams at 50 torr and 25.degree. C. and a particular, unique X-ray diffraction pattern.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: March 30, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Charles T. Kresge, Michael E. Leonowicz, Wieslaw J. Roth, Kirk D. Schmitt, James C. Vartuli
  • Catalytic conversion
    Patent number: 5196633
    Abstract: A process is provided for effecting catalytic conversion of an organic compound-containing feedstock to conversion product which comprises contacting said feedstock under catalytic conversion conditions with a catalyst comprising an active form of an inorganic, porous crystalline phase exhibiting, after calcination, a hexagonal arrangement of uniformly-sized pores having diameters of at least about 13, e.g., at least about 15, Angstrom Units and exhibiting a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 Angstrom Units.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: March 23, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Charles T. Kresge, Michael E. Leonowicz, Wieslaw J. Roth, James C. Vartuli
  • Synthesis of crystalline silicate ZSM-12
    Patent number: 5192521
    Abstract: This invention relates to a new form of crystalline material identified as zeolite ZSM-12, to a new and useful improvement in synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: March 9, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Ahmad Moini, Ernest W. Valyocsik
  • Filtration in solvent dewaxing with continuous spraying of filter with both hot and cold solvents
    Patent number: 5190673
    Abstract: An improved solvent dewaxing process in which a method and apparatus for continuous hot wash of a dewaxing filter is disclosed. A hot wash solvent is continuously sprayed below the doctor blade followed by a cold solvent spray below the hot solvent spray. Additionally, a solvent management process for changing the proportions of the solvent in response to different viscosity feedstocks thereby increasing filtration efficiency is also disclosed.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: March 2, 1993
    Assignee: Mobil Oil Corp.
    Inventor: Lyle A. Leach
  • Process for oxidative conversion of methane to higher hydrocarbons using metal sulfide oxidizing agent
    Patent number: 5191138
    Abstract: There is provided a process for converting methane to hydrocarbons having at least two carbon atoms (i.e. higher hydrocarbons). The process involves oxidizing methane with a metal sulfide oxidizing agent. After this conversion of methane, the reduced metal sulfide may be regenerated by oxidation of the reduced metal sulfide.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: March 2, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Scott Han, James N. Michaels, Robert E. Palermo, David L. Stern, Dennis E. Walsh
  • Molecular sieves coated with non-oxide ceramics for toluene disproportionation
    Patent number: 5191137
    Abstract: There is provided a molecular sieve coated with a non-oxide ceramic. The molecular sieve may be a zeolite, such as ZSM-5, and the ceramic coating may be, e.g., boron nitride. The coated molecular sieve may be prepared by contacting the molecular sieve with a ceramic precursor material comprising a thermally decomposable material, such as polyborazylene, and thermally decomposing this thermally decomposable material. The coated molecular sieves may be used as organic conversion catalysts. The non-oxide ceramic coating may alter or enhance the shape-selective properties of the molecular sieve by providing a diffusion barrier to molecules.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: March 2, 1993
    Assignee: Mobil Oil Corp.
    Inventor: Jeffrey S. Beck
  • Redispersion of noble metal on low acidity support
    Patent number: 5188996
    Abstract: A process is described for redispersing agglomerated metal on a catalyst. The catalyst comprises noble metal on a low acidity oxide support, and the process comprises contacting the catalyst with a gas stream containing about 3 to about 6 Torr chlorine and about 250 to about 750 Torr oxygen under conditions sufficient to achieve redispersion.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: February 23, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Tracy J. Huang, Ying-Yen P. Tsao
  • Dehydrocyclization and reforming catalyst
    Patent number: 5185484
    Abstract: A Pt/Ba/USY catalyst prepared with a high SiO.sub.2 /Al.sub.2 O.sub.3 ratio USY gives improved aromatics selectivity compared to other Pt/USY containing catalysts. The improved selectivity is a result of the method of catalyst preparation which includes incorporation of a Group IIA metal after platinum incorporation.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: February 9, 1993
    Assignee: Mobil Oil Corp
    Inventors: Kenneth J. Del Rossi, Garry W. Kirker, Albin Huss, Jr.
  • Activating silicoaluminophosphate compositions
    Patent number: 5185310
    Abstract: A method of activating silicoaluminophosphate (SAPO) compositions by contacting as-synthesized SAPO with hydrated alumina and water, followed by heating to at least 425.degree. C., preferably in nitrogen and then air.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: February 9, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Thomas F. Degnan, Sharon B. McCullen, Kirk D. Schmitt, George H. Hatzikos
  • Demetallation of hydrocarbon feedstocks with a synthetic mesoporous crystalline material
    Patent number: 5183561
    Abstract: There is provided a process for demetallizing hydrocarbon feedstocks, such as resids or shale oil. The process uses a catalyst comprising at least one hydrogenation metal, such as nickel and molybdenum, and an ultra-large pore oxide material. This ultra-large pore oxide material may have uniformly large pores, e.g., having a size of about 40 Angstroms in diameter.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: February 2, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Charles T. Kresge, Michael E. Leonowicz, Wieslaw J. Roth, James C. Vartuli, Kathleen M. Keville, Stuart S. Shih, Thomas F. Degnan, Francis G. Dwyer, Michael E. Landis
  • Rare earth exchanged layered silicate catalysts
    Patent number: 5183559
    Abstract: There is provided a catalyst comprising a layered silicate, such as magadiite, containing interspathic polymeric silica which serves to prop open the layers. The catalyst further comprises rare earth cations which are exchanged with other cations in the silicate. It has been discovered that this rare earth cation exchange imparts enhanced hydrothermal stability to the catalyst. There is also provided a method for making this catalyst and a process for using this catalyst for cracking hydrocarbons. In the cracking process, the catalyst is regenerated.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: February 2, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Garry W. Kirker, Thomas F. Degnan, Jr., Albin Huss, Jr., Michael E. Landis
  • Use of ZSM-57 in catalytic cracking for gasoline octane improvement and co-production of light olefins
    Patent number: 5183790
    Abstract: The catalytic cracking of a hydrocarbon oil to provide a product of increased octane number and increased light olefin content is carried out employing a cracking catalyst composition containing both a large port crystalline zeolite component and a ZSM-57 zeolite component.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: February 2, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Girish K. Chitnis, Joseph A. Herbst, Ernest W. Valyocsik
  • Borated hydroxyalkyl esters of alkyl- or alkenylsuccinimide-derived dithiocarbamic acids as multifunctional ashless dispersants
    Patent number: 5182036
    Abstract: Borated hydroxyalkyl esters of alkyl- or alkenylsuccinimide-derived dithiocarbamic acids, have been found to be effective multifunctional additives in lubricant and fuel applications.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: January 26, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Abraham O. M. Okorodudu, Angeline B. Cardis
  • Synthesis of large crystal size ZSM-5
    Patent number: 5182090
    Abstract: There is provided a method for making large crystal size ZSM-5. This method involves the use of two organic cations, specifically tetrapropylammonium (TPA) and tetramethylammonium (TMA) cations, in the reaction mixture. This method further involves the use of a source of deliberately added alumina, such as aluminum sulfate, in the reaction mixture.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: January 26, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Francis G. Dwyer, Pochen Chu, William E. Cormier, Jr.
  • Catalysts bound with low acidity refractory oxide
    Patent number: 5182242
    Abstract: Low acidity refractory oxide-bound molecular sieve, e.g., zeolite, compositions, for example, zirconia-bound zeolite Beta, possessing superior physical properties, e.g., crush strength, and the method for their manufacture are described. Since low acidity refractory oxide-bound catalysts are less active than alumina-bound zeolite catalysts, the former are particularly useful in hydrocarbon conversion processes in which reduced coke make increases catalyst cycle length. Due to their stability in acid environments, the low acidity refractory oxide-bound molecular sieve extrudate herein can be acid treated without unduly compromising its structural integrity.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: January 26, 1993
    Assignee: Mobil Oil Corp.
    Inventor: David O. Marler
  • Synthesis of crystalline ZSM-5-type material
    Patent number: 5174977
    Abstract: This invention relates to a new form of crystalline material identified as zeolite ZSM-5-type, to a new and useful method for synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: December 29, 1992
    Assignee: Mobil Oil Corp.
    Inventors: Clarence D. Chang, Stuart D. Hellring, Randy F. Striebel
  • Synthesis of crystalline ZSM-5-type material
    Patent number: 5174981
    Abstract: This invention relates to a new form of crystalline material identified as zeolite ZSM-5-type, to a new and useful method for synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: December 29, 1992
    Assignee: Mobil Oil Corp.
    Inventors: Stuart D. Hellring, Randy F. Striebel
  • Synthesis of crystalline ZSM-35
    Patent number: 5174980
    Abstract: This invention relates to a new form of crystalline material identified as having the structure of ZSM-35, to a new and useful method for synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: December 29, 1992
    Assignee: Mobil Oil Corp.
    Inventors: Stuart D. Hellring, Randy F. Striebel
  • Synthesis of crystalline ZSM-5-type material
    Patent number: 5174978
    Abstract: This invention relates to a new form of crystalline ZSM-5-type material, to a new and useful method for synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: December 29, 1992
    Assignee: Mobil Oil Corp.
    Inventors: Stuart D. Hellring, Randy F. Striebel