Patents by Inventor Robert P. L. Absil

Robert P. L. Absil 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: 5833840
    Abstract: A catalyst composition which comprises a crystalline metallosilicate having the structure of zeolite Beta, phosphorus and a matrix that is substantially free of crystalline aluminum phosphate which has improved resistance to steam deactivation at which has higher cracking activity than analogous catalysts prepared without phosphorus. The crystalline metallosilicate may be used in the as-synthesized form or in the calcined form. Also included is the method to produce the catalyst composition and methods for the use of catalysts prepared by the present method in organic conversion processes. Specific embodiments of the invention involve various techniques for preparation of catalyst containing phosphorus and crystalline metallosilicates having the structure of zeolite Beta. Catalysts prepared according to the method of this invention are useful for organic compound, e.g., hydrocarbon compound, conversion processes.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 10, 1998
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, George H. Hatzikos
  • Patent number: 5710085
    Abstract: A catalyst composition which comprises a crystalline metallosilicate having the structure of zeolite Beta, phosphorus and a matrix that is substantially free of crystalline aluminum phosphate which has improved resistance to steam deactivation and which has higher cracking activity than analogous catalysts prepared without phosphorus. The crystalline metallosilicate may be used in the as-synthesized form or in the calcined form. Also included is the method to produce the catalyst composition and methods for the use of catalysts prepared by the present method in organic conversion processes. Specific embodiments of the invention involve various techniques for preparation of catalysts containing phosphorus and crystalline metallosilicates having the structure of zeolite Beta. Catalysts prepared according to the method of this invention are useful for organic compound, e.g., hydrocarbon compound, conversion processes.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: January 20, 1998
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, George H. Hatzikos
  • Patent number: 5658454
    Abstract: A catalyst composition which comprises a crystalline metallosilicate having the structure of zeolite Beta, phosphor and a matrix that is substantially free of crystalline aluminum phosphate which has improved resistance to steam deactivation which has higher cracking activity than analogous catalysts prepared without phosphorus. The crystalline metallosilicate be used in the as-synthesized form or in the calcined form. included is the method to produce the catalyst composition and methods for the use of catalysts prepared by the present method in organic conversion processes. Specific embodiments of the invention involve various techniques for preparation of catalyst containing phosphorus and crystalline metallosilicates having the structure of zeolite Beta. Catalysts prepared according to the method of this invention are useful for organic compound, e.g., hydrocarbon compound, conversion processes. Organic compound conversion processes include cracking, hydrocracking, and transalkylation, among others.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 19, 1997
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, Thomas F. Degnan, George H. Hatzikos, Jocelyn A. Kowalski, Thomas Mebrahtu, Grant H. Yokomizo
  • Patent number: 5620590
    Abstract: There is provided a process and a catalyst for hydrocracking hydrocarbons, such as gas oils. The catalyst comprises a hydrogenating metal and small crystal size zeolite Y. The zeolite Y may have a crystal size of less than one micron. Examples of hydrogenating metals include nickel and tungsten.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: April 15, 1997
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, James R. Katzer, Daria N. Lissy, Robert A. Ware, Stephen S. Wong
  • Patent number: 5456821
    Abstract: A process is provided for converting feedstock hydrocarbon compounds over a catalyst composition which comprises a large-pore molecular sieve component and an additive catalyst component, said additive catalyst component having been formulated in a special way to provide an improved catalyst and conversion process. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline, and increased lower olefins, especially propylene and butylene.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: October 10, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Jocelyn A. Kowalski
  • Patent number: 5457078
    Abstract: A catalyst composition which comprises a crystalline metallosilicate having the structure of zeolite Beta, phosphorus, and a matrix that is substantially free of crystalline aluminum phosphate which has improved resistance to steam deactivation and which has higher cracking activity than analogous catalysts prepared without phosphorus. The crystalline metallosilicate may be used in the as-synthesized form or in the calcined form. Also included is the method to produce the catalyst composition and methods for the use of catalysts prepared by the present method in organic conversion processes. Specific embodiments of the invention involve various techniques for preparation of catalysts containing phosphorus and crystalline metallosilicates having the structure of zeolite Beta. Catalysts prepared according to the method of this invention are useful for organic compound, e.g., hydrocarbon compound, conversion processes.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: October 10, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, Thomas F. Degnan, George H. Hatzikos, Jocelyn A. Kowalski, Thomas Mebrahtu, Grant H. Yokomizo
  • Patent number: 5401704
    Abstract: There is provided a process and a catalyst for hydrocracking hydrocarbons, such as gas oils. The catalyst comprises a hydrogenating metal and small crystal size zeolite Y. The zeolite Y may have a crystal size of less than one micron. Examples of hydrogenating metals include nickel and tungsten.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: March 28, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, James R. Katzer, Daria N. Lissy, Robert A. Ware, Stephen S. Wong
  • Patent number: 5366948
    Abstract: A catalyst composition is provided which comprises a large-pore molecular sieve component and an additive catalyst component, said additive catalyst component having been formulated in a special way to provide an improved catalyst and conversion process. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline, and increased lower olefins, especially propylene and butylene.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: November 22, 1994
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Jocelyn A. Kowalski
  • Patent number: 5348643
    Abstract: A process is provided for converting feedstock hydrocarbon compounds over a catalyst composition which comprises clay and a zeolite component, at least one of which has been treated with a phosphorus-containing compound, for example, ammonium dihydrogen phosphate or phosphoric acid, and which is spray dried at a low pH, preferably lower than about 3. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline and increased lower olefins, especially propylene and butylene.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: September 20, 1994
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Joseph A. Herbst
  • Patent number: 5232579
    Abstract: A catalytic cracking process for converting a hydrocarbon fraction, preferably boiling in the range of a heavy gas oil, is disclosed in which the cracking catalyst is a large crystal fully crystalline zeolite Beta having a broad range of silica-to-alumina mole ratios, i.e. 20->1000. The zeolite Beta catalyst is synthesized with a nitrogenous organic chelating agent, such as a tertiary alkanolamine, preferably triethanolamine, in the synthesis mixture along with at least one source of organic directing agent such as tetraethylammonium hydroxide, tetraethylammonium bromide and tetraethylammonium fluoride. The zeolite Beta can be used as a stand alone catalyst or an additive catalyst for hydrocarbon cracking reactions along with another molecular seive type catalyst such as a faujasite catalyst or ZSM-5. The large crystal zeolite Beta can also be treated with a source of phosphorus to enhance the properties of the zeolite.
    Type: Grant
    Filed: June 14, 1991
    Date of Patent: August 3, 1993
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, Joseph A. Herbst, Jocelyn A. Kowalski, Mae K. Rubin
  • Patent number: 5231064
    Abstract: The present invention is directed to a phosphorus containing catalyst which is formed by spray drying at a pH preferably less than 3. The present invention also comprises methods for preparing catalysts comprising phosphoric acid treated clay, as well as methods for cracking hydrocarbons utilizing the novel catalysts disclosed herein. The catalysts of the present invention advantageously exhibit low attritability.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: July 27, 1993
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Joseph A. Herbst
  • Patent number: 5126298
    Abstract: The present invention is directed to a novel catalyst useful in the cracking of hydrocarbons. The catalyst of the present invention is formed with at least one zeolite, a first clay having a first average particle size and a second clay having a smaller average particle size than the first clay, wherein at least one of the clays or the zeolite is first treated with a source of phosphorus, such as phosphoric acid. These components are mixed in a slurry and spray dried at a low pH. Thus the present invention is also directed to a process for preparing a zeolite catalyst. The catalysts of the present invention advantageously do not require calcination in order to obtain low attritability.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: June 30, 1992
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Jocelyn A. Kowalski
  • Patent number: 5085762
    Abstract: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite material having a characteristic structure with a defined X-ray diffraction pattern. The preferred material of this type is zeolite MCM-22. The copper may be exchanged onto the zeolite or impregnated into the catalyst. In addition, the catalyst may include titanium or zirconium to provide stability and further improvements in stability may be obtained with the addition of rareearth metal cations, especially cerium or yttrium. NOX and CO emissions from the regenerator are reduced, and the gasoline produced in the unit may have an improved octane number.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: February 4, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, Emmerson Bowes, Gary J. Green, David O. Marler, David S. Shihabi, Richard F. Socha
  • Patent number: 5053374
    Abstract: Low acidity refractory oxide-bound zeolite catalysts, for example, silica-bound ultrastable Y zeolite, possessing physical properties, e.g., crush strength, similar to those of their alumina-bound counterparts are described. Since low acidity refractory oxide-bound catalysts are inherently 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 zeolite extrudate herein can be acid treated without unduly compromising its structural integrity.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: October 1, 1991
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, Philip J. Angevine, Joseph A. Herbst, Donald J. Klocke, John P. McWilliams, Scott Han, David S. Shihabi
  • Patent number: 5039640
    Abstract: A novel catalyst composition is provided for catalytic cracking of a hydrocarbon oil to provide a product of increased octane number and increased C.sub.5 + gasoline content. The catalyst composition contains a large pore crystalline molecular sieve component and an MCM-22 zeolite component.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: August 13, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Philip J. Angevine, Robert G. Bundens, Joseph A. Herbst, Sadi Mizrahi, Mae K. Rubin
  • Patent number: 5030787
    Abstract: A feedstock containing one or more C.sub.9 + aromatic compounds, and optionally benzene and/or toluene, undergoes conversion over a catalyst comprising a zeolite possessing a Constraint Index of from 1 to about 3 to provide a product containing a substantial amount of C.sub.6 -C.sub.8 aromatic compounds, e.g. benzene and xylene(s), predominantly the latter.
    Type: Grant
    Filed: April 19, 1990
    Date of Patent: July 9, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Scott Han, David O. Marler, David S. Shihabi, James C. Vartuli, Philip Varghese
  • 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: 4983276
    Abstract: The catalytic cracking of a hydrocarbon oil to provide a product of increased octane number and increased C.sub.5 + gasoline content is carried out employing a cracking catalyst composition containing both a large pore crystalline zeolite component and an MCM-22 zeolite component.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: January 8, 1991
    Assignee: Mobil Oil Corp.
    Inventors: Robert P. L. Absil, Philip J. Angevine, Robert G. Bundens, Joseph A. Herbst
  • 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: 4919790
    Abstract: A method for hydrocarbon dewaxing which utilizes a reactivated acidic zeolite catalyst deactivated from MTG processing is disclosed. The deactivated MTG catalyst is contacted with a reactivation-effective amount of an alkali metal carbonate and/or an alkaline earth metal carbonate to reactivate the catalyst. The catalyst is, thereafter, converted to the catalytically active form. The catalyst is then steamed at a temperature and for a time period sufficient to reduce its alpha value to a level which is substantially equal to that of a fresh hydrocarbon dewaxing acidic zeolite catalyst. The reactivated catalyst is than used for catalyzing hydrocarbon dewaxing processes.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: April 24, 1990
    Assignee: Mobil Oil Corporation
    Inventors: Robert P. L. Absil, Clarence D. Chang, Cynthia T-W. Chu, Donald J. Klocke