Patents by Inventor Gary David Mohr

Gary David Mohr 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: 6504074
    Abstract: There is provided a coated zeolite catalyst in which the accessibility of the acid sites on the external surfaces of the zeolite is controlled and a process for converting hydrocarbons utilizing the coated zeolite catalyst. The zeolite catalyst comprises core crystals of a first zeolite and a discontinuous layer of smaller size second crystals of a second zeolite which cover at least a portion of the external surface of the first crystals The coated zeolite catalyst finds particular application in hydrocarbon conversion processes where catalyst activity in combination with zeolite structure are important for reaction selectivity, e.g., catalytic cracking, alkylation, disproportional of toluene, isomerization, and transalkylation reactions.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: January 7, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Johannes P. Verduijn, Gary David Mohr, Kenneth Ray Clem, Wilfried Jozef Mortier, Machteld Maria Mertens, Michael C. Bradford
  • Publication number: 20020198425
    Abstract: A xylene isomerization process is disclosed in which any ethylbenzene in the feed is removed, either by dealkylation or isomerization, in a separate reactor upstream of the xylene isomerization reactor and the xylene isomerization catalyst is contained in the same reactor, typically a clay treater, as that used to accommodate the olefin removal catalyst. In certain cases, a single catalyst may be used to effect both xylene isomerization and olefin removal.
    Type: Application
    Filed: May 2, 2002
    Publication date: December 26, 2002
    Inventor: Gary David Mohr
  • Publication number: 20020170848
    Abstract: There is provided a process for converting hydrocarbons using a catalyst comprising macrostructures having a three-dimensional network of particles comprised of porous inorganic material. The particles of the macrostructures occupy less than 75% of the total volume of the macrostructures and are joined together to form a three-dimensional interconnected network comprised of pores having diameters greater than about 20 Å. The macrostructures can be made by forming an admixture containing a porous organic ion exchanger and a synthesis mixture capable of forming the porous inorganic material; converting the synthesis mixture to the porous inorganic material; and removing the porous organic ion exchanger from the inorganic material.
    Type: Application
    Filed: April 25, 2002
    Publication date: November 21, 2002
    Inventors: Gary David Mohr, Wilfried Jozef Mortier, Xiaobing Feng, Per Johan Sterte, Lubomira Borislavova Tosheva
  • Patent number: 6458736
    Abstract: There is provided a process for converting hydrocarbons which utilizes a zeolite bound zeolite catalyst that has enhanced performance when utilized in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportionation of toluene, isomerization, and transalkylation reactions. The catalyst comprises a first zeolite having particles of greater than about 0.1 micron average particle size and a binder comprising second zeolite particles having an average particle size less than said first particles.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: October 1, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Gary David Mohr, Marcel Johannes Gerardus Janssen
  • Publication number: 20020137977
    Abstract: A process is provided for the alkylation, transalkylation, or isomerization of aromatic hydrocarbons. The processes comprises contacting aromatic hydrocarbons under conversion conditions with a zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises first crystals of a first large pore zeolite which are bound together by second crystals of a second zeolite.
    Type: Application
    Filed: February 28, 2002
    Publication date: September 26, 2002
    Inventors: Dan Eldon Hendriksen, Gary David Mohr, Johannes Petrus Verduijn, Robert Scott Smith
  • Publication number: 20020115555
    Abstract: This invention relates to a process for producing zeolite-bound high silica zeolites and the use of the zeolite-bound high silica zeolite produced by the process for hydrocarbon conversion. The process is carried out by forming an extrudable paste comprising a mixture of high silica zeolite in the hydrogen form, water, silica, and optionally an extrusion aid, extruding the extrudable paste to form silica-bound high silica zeolite extrudates, and then converting the silica of the binder to a zeolite binder. The zeolite-bound high silica zeolite produced by the process comprises high silica zeolite crystals that are bound together by zeolite binder crystals. The zeolite-bound high silica zeolite finds particular application in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportionation of toluene, isomerization, and transalkylation reactions.
    Type: Application
    Filed: November 14, 2001
    Publication date: August 22, 2002
    Inventors: Jannetje Maatje van den Berge, Gary David Mohr
  • Publication number: 20020082460
    Abstract: There is provided a coated zeolite catalyst in which the accessibility of the acid sites on the external surfaces of the zeolite is controlled and a process for converting hydrocarbons utilizing the coated zeolite catalyst. The zeolite catalyst comprises core crystals of a first zeolite and a discontinuous layer of smaller size second crystals of a second zeolite which cover at least a portion of the external surface of the first crystals The coated zeolite catalyst finds particular application in hydrocarbon conversion processes where catalyst activity in combination with zeolite structure are important for reaction selectivity, e.g., catalytic cracking, alkylation, disproportional of toluene, isomerization, and transalkylation reactions.
    Type: Application
    Filed: December 3, 1998
    Publication date: June 27, 2002
    Inventors: JOHANNES P. VERDUIJN, JANNETJE VAN DEN BERGE, GARY DAVID MOHR, KENNETH RAY CLEM, WILFRIED JOZEF MORTIER, MACHTELD MARIA MERTENS, MICHAEL C. BRADFORD
  • Publication number: 20010002426
    Abstract: There is provided a process for converting hydrocarbons which utilizes a zeolite bound zeolite catalyst that has enhanced performance when utilized in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportionation of toluene, isomerization, and transalkylation reactions. The catalyst comprises a first zeolite having particles of greater than about 0.1 micron average particle size and a binder comprising second zeolite particles having an average particle size less than said first particles.
    Type: Application
    Filed: January 8, 2001
    Publication date: May 31, 2001
    Inventors: Gary David Mohr, Marcel Johannes Gerardus Janssen
  • Patent number: 6198013
    Abstract: There is provided a process for converting hydrocarbons which utilizes a zeolite bound zeolite catalyst that has enhanced performance when utilized in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportionation of toluene, isomerization, and transalkylation reactions. The catalyst comprises a first zeolite having particles of greater than about 0.1 micron average particle size and a binder comprising second zeolite particles having an average particle size less than said first particles.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: March 6, 2001
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Gary David Mohr, Tan Jen Chen, Kenneth Ray Clem, Mechilium Johannes Gerardus Janssen, Philip Andrew Ruziska, Johannes Petrus Verduijn
  • Patent number: 6160191
    Abstract: A process for converting hydrocarbons by contacting a hydrocarbon feedstream under hydrocarbon conversion conditions with a large crystal zeolite catalyst. The large crystal zeolite of the catalyst used in the hydrocarbon conversion process is made by heating an aqueous zeolite synthesis mixture under agitation to a temperature equal to or less than the effective nucleation temperature of the synthesis mixture. After this step, the aqueous synthesis mixture is heated in the absence of agitation to a temperature equal to or greater than the effective nucleation temperature of the aqueous zeolite synthesis mixture. The process finds particular application in hydrocarbon conversion processes where reduced non-selective acidity is important for reaction selectivity and/or the maintenance of catalyst activity, e.g., toluene disproportionation, dealkylation, alkylation, and transalkylation.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: December 12, 2000
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert Scott Smith, Johannes Petrus Verduijn, deceased, by Jannetje Maatje van den Berge, executrix, Gary David Mohr, Thomas Herman Colle
  • Patent number: 6111157
    Abstract: A process is provided for the alkylation, transalkylation, or isomerization of aromatic hydrocarbons. The processes comprises contacting aromatic hydrocarbons under conversion conditions with a zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises first crystals of a first large pore zeolite which are bound together by second crystals of a second zeolite.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: August 29, 2000
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Dan Eldon Hendriksen, Gary David Mohr, Johannes Petrus Verduijn, Robert Scott Smith
  • Patent number: 6039864
    Abstract: There is provided a process for converting hydrocarbons which utilizes a zeolite bound zeolite catalyst that has enhanced performance when utilized in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportionation of toluene, isomerization, and transalkylation reactions. The catalyst comprises a first zeolite having particles of greater than about 0.1 micron average particle size and a binder comprising second zeolite particles having an average particle size less than said first particles.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: March 21, 2000
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Gary David Mohr, Johannes Petrus Verduijn
  • Patent number: 6040259
    Abstract: There is provided a zeolite bound zeolite catalyst which does not contain significant amounts of non-zeolitic binder and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The catalyst comprises first zeolite, crystals, a binder comprising second zeolite crystals and a hydrogenation/dehydrogenation metal. The zeolite bound zeolite catalyst is prepared by converting the silica binder of a silica bound aggregate containing the first crystals of said first zeolite and at least a portion of the hydrogenation/dehydrogenation metal to said second zeolite. The zeolite bound zeolite catalyst has excellent performance when used in hydrocarbon conversion processes such as naphtha reforming and xylenes isomerization/ethylbenzene conversion.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: March 21, 2000
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Gary David Mohr, Johannes Petrus Verduijn
  • Patent number: 5993642
    Abstract: There is provided a process for converting hydrocarbons which utilizes a zeolite bound zeolite catalyst that has enhanced performance when utilized in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportionation of toluene, isomerization, and transalkylation reactions. The catalyst comprises a first zeolite having particles of greater than about 0.1 micron average particle size and a binder comprising second zeolite particles having an average particle size less than said first particles.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: November 30, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Gary David Mohr, Tan Jen Chen, Kenneth Ray Clem, Mechilium Johannes Geradus Janssen, Phillip Andrew Ruziska, Johannes Petrus Verduijn, Jannetje Maatje van den Berge
  • Patent number: 5958366
    Abstract: Large crystal zeolites are prepared by heating a zeolite synthesis mixture under agitation to a temperature equal to or less than the effective nucleation temperature of the zeolite synthesis mixture and thereafter the zeolite synthesis mixture is heated without agitation to a temperature equal to or greater than the effective nucleation temperature of the zeolite synthesis mixture.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: September 28, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert Scott Smith, Johannes Petrus Verduijn, deceased, Jannetje Maatje van den Berge, executrix, Thomas H. Colle, Gary David Mohr, Gotz Burgfels, Josef Schonlinner