Patents by Inventor Scott Han

Scott Han 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: 5025109
    Abstract: There is provided a process for the direct partial oxidation of methane with oxygen, whereby hydrocarbons having at least two carbon atoms are produced. The catalyst used in this reaction is a spinel oxide such as ZnMn.sub.2 O.sub.4.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: June 18, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Lorenzo C. DeCaul, Scott Han, Robert E. Palermo, Dennis E. Walsh
  • Patent number: 5023391
    Abstract: There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons are produced. The catalyst used in this reaction is a GaZSM-5 catalyst. This catalyst may be prepared by ion exchanging or impregnating a ZSM-5 catalyst with a suitable gallium salt such as gallium nitrate.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: June 11, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Scott Han, Robert E. Palermo, Judith A. Pearson, Dennis E. Walsh
  • Patent number: 5023393
    Abstract: There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons are produced. The catalyst used in this reaction is an NiZSM-5 catalyst. This catalyst may be prepared by ion exchanging or impregnating a ZSM-5 catalyst with a suitable nickel salt such as nickel nitrate.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: June 11, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Scott Han, Robert E. Palermo, Judith A. Pearson, Dennis E. Walsh
  • Patent number: 5023392
    Abstract: There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons are produced. The catalyst used in this reaction is a CuZSM-5 catalyst. This catalyst may be prepared by ion exchanging or impregnating a ZSM-5 catalyst with a suitable copper salt such as copper nitrate.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: June 11, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Scott Han, Robert E. Palermo, Judy A. Pearson, Dennis E. Walsh
  • Patent number: 5015798
    Abstract: There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons including C.sub.5 + liquid hydrocarbons are produced. The catalyst used in this reaction may be a ZSM-5 catalyst. The process involves the use of an initial cofeed, such as propane, in admixture with the methane and oxygen to induce the formation of liquid hydrocarbons. As the reaction progresses, the flow of cofeed is shut off, and liquid hydrocarbons continue to be produced.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: May 14, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Scott Han, Robert E. Palermo, Judy A. Pearson, Dennis E. Walsh
  • Patent number: 5013422
    Abstract: A hydrocracking process is provided comprising contacting a hydrocarbon stream under hydrocracking conditions and in the presence of hydrogen with a catalyst composition which comprises a synthetic porous crystalline zeolite having a particular X-ray diffraction pattern. An embodiment of the invention provides a process for reducing the pour point of a waxy component-containing hydrocarbon oil by hydrocracking and dewaxing. Another embodiment of the invention provides a dual-stage hydrocracking process to produce premium gasoline and distillate boiling range products.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: May 7, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Thomas F. Degnan, Scott Han, David O. Marler, Richard F. Socha, Michael R. Stapleton
  • Patent number: 5012029
    Abstract: A mixture of organic compounds comprising a major amount of liquid hydrocarbons, mostly aromatic, is formed by the direct partial oxidation of methane in the presence of a ZSM-5 catalyst. The reaction conditions are substantially the same as those required for the direct homogeneous partial oxidation to methanol. However, liquid hydrocarbon formation depends on the presence of a small amount of an impurity such as propane or propylene in the feed; in the absence of such, only methanol is formed. With such modifier present, controls of reaction parameters, e.g., temperature, permits synthesis of both methanol and liquid hydrocarbons in desired proportions. Properly processed natural gas can serve to provide methane and at least part of the reaction modifier.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: April 30, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Scott Han, Daniel J. Martenak, Robert E. Palermo, Dennis E. Walsh
  • Patent number: 5004856
    Abstract: There is provided a process for the direct partial oxidation of methane with oxygen, whereby hydrocarbons having at least two carbon atoms are produced. The catalyst used in this reaction is a cadmium-manganese oxide catalyst.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: April 2, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Lorenzo C. DeCaul, Scott Han, Robert E. Palermo, Dennis E. Walsh
  • Patent number: 4982023
    Abstract: A marked improvement in yield, in selectivity or in both is obtained in the synthesis of methanol by the homogeneous direct partial oxidation of natural gas or other source of methane when the reactor space is filled with inert, refractory inorganic particles.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: January 1, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Scott Han, Robert E. Palermo, Dennis E. Walsh
  • Patent number: 4973784
    Abstract: A reduction in the durene content of an effluent resulting from the zeolite-catalyzed conversion of a C.sub.1 -C.sub.4 oxygenate such as methanol to gasoline is disclosed wherein either the total effluent from said conversion or a bottoms fraction thereof containing durene is contacted with a particular zeolite catalyst to convert said durene to other products.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: November 27, 1990
    Assignee: Mobil Oil Corp.
    Inventors: Scott Han, Clarence D. Chang
  • Patent number: 4968650
    Abstract: Zeolite catalysts containing gallium, the gallium is primarily present in the framework of the catalyst and the catalyst contains little or no non-framework gallium; and methods for producing such catalysts by varying the reaction molar ratios of SiO.sub.2 /Ga.sub.2 O.sub.3 ; and the use of such catalysts to produce high octane aromatics.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: November 6, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Cynthia T. Chu, Scott Han
  • Patent number: 4962257
    Abstract: A process is provided for the disproportionation of toluene which comprises contacting toluene under disproportionation conditions with a catalyst comprising a particular synthetic porous crystalline molecular sieve.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: October 9, 1990
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Scott Han, David O. Marler, David S. Shihabi
  • Patent number: 4950829
    Abstract: The invention is directed to aromatization of hydrocarbons of low octane value to produce aromatics over a catalyst composition comprising a zeolite type material which has been treated with the chloride of an oxophilic element such as Si on Ti.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: August 21, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Scott Han, Sharon B. McCullen
  • Patent number: 4943545
    Abstract: Zeolitic catalysts containing framework displaced aluminum, e.g., steamed or spent catalysts, are activated by contact with aqueous fluoride solution under mild conditions. The treatment can enhance catalytic activity, ion-exchange capacity and crystallinity by replacing aluminum in the zeolitic framework.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: July 24, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Scott Han, Bruce P. Pelrine
  • Patent number: 4876411
    Abstract: The present invention provides a process for modifying a crystalline aluminosilicate zeolite having a Constraint Index of from about to about 12 which comprises:(a) steaming the as synthesized crytalline aluminosilicate zeolite containing organic template material to decompose at least a portion of said template material and to extract zeolitic aluminum; and,(b) contacting the zeolite resulting from step (a) in the ammonium, alkali metal or hydrogen form with a dealuminizing agent which forms a water-soluble complex with aluminum to remove a further quantity of zeolitic aluminum therefrom wherein said treated catalyst is employed in the making of lube oil from olefins.
    Type: Grant
    Filed: March 19, 1987
    Date of Patent: October 24, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Emmerson Bowes, Clarence D. Chang, Scott Han, David S. Shihabi
  • Patent number: 4864074
    Abstract: There is provided a process for converting methane to higher molecular weight hydrocarbons. In a first step, methane is contacted with elemental sulfur. In one embodiment, carbon disulfide and hydrogen sulfide are produced from this reaction of methane and sulfur, and this product is, in turn, reacted to form CH.sub.3 SH. In another embodiment, CH.sub.3 SH is formed directly in a one-step reaction of methane and sulfur. This CH.sub.3 SH is then contacted with a sufficient catalyst, such as a zeolite, especially ZSM-5, under conditions sufficient to produce hydrocarbons having two or more carbon atoms.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: September 5, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Scott Han, Robert E. Palermo
  • Patent number: 4864073
    Abstract: There is provided a process for converting methane to higher molecular weight hydrocarbons. In a first step, methane is contacted with carbonyl sulfide in the presence of UV light under conditions sufficient to produce CH.sub.3 SH. This CH.sub.3 SH then contacted with a sufficient catalyst, such as a zeolite, especially ZSM-5, under conditions sufficient to produce hydrocarbons having two or more carbon atoms.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: September 5, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Scott Han, Robert E. Palermo
  • Patent number: 4851604
    Abstract: An improved process is provided for vapor-phase disproportionation of toluene over catalyst comprising a molecular sieve having a high lattice aluminum content whereby its silica/alumina mole ratio is less than 55 and a diffusion rate constant of less than about 150 sec.sup.-1.
    Type: Grant
    Filed: September 2, 1987
    Date of Patent: July 25, 1989
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Scott Han, David O. Marler, David S. Shihabi
  • Patent number: 4828812
    Abstract: A method for increasing ion exchange capacity of a titanosilicate comprises contacting the titanosilicate with aqueous alkaline solution having a pH ranging from 7 to 10. The resulting material is especially useful as a support for highly dispersed noble metal.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: May 9, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Sharon B. McCullen, Nai Y. Chen, Scott Han
  • Patent number: 4822938
    Abstract: There is provided a process for converting methane to higher molecular weight hydrocarbons. In a first step, methane is contacted with elemental sulfur under conditions sufficient to produce carbon disulfide. Carbon disulfide from this step is then contacted with methane and hydrogen under conditions sufficient to convert methane and to produce CH.sub.3 SH. This CH.sub.3 SH is then contacted with a sufficient catalyst, such as a zeolite, especially ZSM-5, under conditions sufficient to produce hydrocarbons having two or more carbon atoms.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: April 18, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Costandi A. Audeh, Weldon K. Bell, Scott Han, Robert E. Palermo