Patents Assigned to Filtrol Corporation
  • Ammoniated silica-alumina gel and catalyst containing the same and processes for producing same
    Patent number: 4238361
    Abstract: This invention relates to hydrothermal treatment of silica-alumina cogels resulting in a reduction in the NH.sub.4 content of the gel and the generation of a gamma crystal phase and the employment of such gels as cracking catalysts.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: December 9, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Crystallized silica-alumina cogel and catalyst employing the same
    Patent number: 4237031
    Abstract: This invention relates silica-alumina cogels containing a crystalline phase and to hydrothermally treatment of silica-alumina cogels resulting in generation of a crystalline phase in the gel and the employment of such crystallized gels as hydrocarbon conversion catalysts.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: December 2, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alifandi, Dennis Stamires
  • Crystallized silica-alumina cogel and catalyst employing the same
    Patent number: 4234457
    Abstract: This invention relates to alpha (Si, Al)O.sub.4 crystalline complex, and to silica-alumina gel and crystalline alumino silicate host containing said alpha (Si, Al)O.sub.4 complex; both gels and crystalline alumina silicates containing a novel crystalline phase resulting from the hydrothermal treatment of the host (Si, Al)O.sub.4 complexes, both amorphous gel and crystalline alumino silicates, in the presence of rare earth cations.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: November 18, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Method of producing faujasite zeolites employing seeding techniques
    Patent number: 4228137
    Abstract: This invention relates to an improvement in the production of zeolites, particularly, zeolites of the faujasite type, employing clay based seeds derived from natural halloysite.
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: October 14, 1980
    Assignee: Filtrol Corporation
    Inventors: Dennis R. Taylor, Mark Jones
  • Aluminum faujasites, catalyst containing same and process of producing same
    Patent number: 4224188
    Abstract: This invention relates to zeolites of the faujasite type generally referred to as X or Y zeolites which contain both aluminum and NH.sub.4 in exchange position and catalysts employing the same.The zeolite of our invention is derived from the sodium form of the zeolite by first exchanging the sodium form with an aluminum ion to replace a substantial portion of the sodium and further reducing the sodium content of the zeolite by exchange with an ammonium ion.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: September 23, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Exchanged faujasite zeolite catalyst containing same and process for producing same
    Patent number: 4215016
    Abstract: Exchanged zeolite of the faujasite type is produced by exchanging the sodium zeolite at super atmospheric pressures at temperatures below about 500.degree. F. with salt solutions in ratios of cations in excess of an equivalent of the cation per equivalent of the sodium in the zeolite.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: July 29, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Balanced alumina matrix in zeolite containing catalyst
    Patent number: 4206085
    Abstract: This invention relates to an improvement in the abrasion resistance of catalysts formulated from a mixture of an exchanged zeolite of the faujasite type, hydrated alumina and ammonium polysilicate or silica sol.
    Type: Grant
    Filed: January 15, 1979
    Date of Patent: June 3, 1980
    Assignee: Filtrol Corporation
    Inventors: John Lim, Dennis Stamires, Michael Brady
  • Method of producing zeolitic catalysts with silica alumina matrix
    Patent number: 4198319
    Abstract: This invention relates to zeolitic catalysts composed of an exchanged zeolite of the faujasite type and a matrix composed of clay and an alumina-silica component.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: April 15, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Hydroprocessing catalysts
    Patent number: 4198321
    Abstract: This invention relates to a hydroprocessing catalyst particularly useful in hydrocracking comprising a low sodium faujasite zeolite produced by a high pressure exchange of Na cations with a solution of an ammonium salt as a substrate for incorporation of a hydrogenating metal compound.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: April 15, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Process for forming alumina pellets containing titania and process for producing hydrodesulfurization catalyst containing the pellets
    Patent number: 4196101
    Abstract: Shaped alumina pellets containing titania, catalysts employing the same, and process for producing the same.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: April 1, 1980
    Assignee: Filtrol Corporation
    Inventors: Geoffrey R. Wilson, Masami Kayamoto
  • Rare earth exchange faujasite zeolite catalyst containing same and process for producing same
    Patent number: 4192778
    Abstract: A rare earth exchanged zeolite of the faujasite type in which the equivalent of Na is less than 0.1 and the rare earth is at least 0.9 equivalents per gram atom of aluminum and catalysts including the same.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: March 11, 1980
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Rare earth exchange X zeolites, catalyst employing the same and method for producing the same
    Patent number: 4164483
    Abstract: This invention relates to the preparation of rare earth exchanged X type faujasite zeolites in which the Na content is reduced by exchange with rare earth cations to introduce in excess of about 0.9 equivalents of rare earth cations per gram atom of aluminum and catalysts employing the same.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: August 14, 1979
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Method of producing zeolitic catalysts with silica alumina matrix
    Patent number: 4142995
    Abstract: This invention relates to zeolitic catalysts composed of an exchanged zeolite of the faujasite type and a matrix composed of alumina and an alumina-silica component.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: March 6, 1979
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Shaped catalyst support
    Patent number: 4142994
    Abstract: A mechanically strong, thermally stable porous siliceous particle having a high pore volume and surface area with a major portion of the pore volume in pores of radii more than 20 Angstroms and the process of producing the particles by shaping a clay, acid-leached to a degree insufficient to destroy the plasticity of the clay, forming the leached clay into shaped particles, calcining the particles and further extracting the calcined clay particles without impairing their shape.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: March 6, 1979
    Assignee: Filtrol Corporation
    Inventor: Hamid Alafandi
  • Zeolitic catalysts and method of producing same
    Patent number: 4100108
    Abstract: This invention relates to production of improved zeolitic catalysts produced from mixtures of cation exchanged zeolites of the faujasite type incorporated into a matrix such as alumina, silica-alumina gels and clay or mixtures thereof.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: July 11, 1978
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Attrition resistant zeolitic catalyst
    Patent number: 4086187
    Abstract: Attrition resistant zeolitic catalysts containing silica, alumina and clay components.
    Type: Grant
    Filed: June 17, 1976
    Date of Patent: April 25, 1978
    Assignee: Filtrol Corporation
    Inventors: John Lim, Dennis Stamires
  • Hydrothermally stable catalysts containing ammonium faujasite zeolites
    Patent number: 4085069
    Abstract: Catalysts containing a matrix and an ammonium zeolite of the faujasite type produced by exchanging the zeolite whose exchange sites are substantially entirely occupied by Na cations, with an ammonium salt solution to exchange substantially all of the Na cations with NH.sub.4 cations with substantially no impairment of crystallinity by a control of the relation of the equivalents of NH.sub.4 in the solution to equivalents of Na in the zeolite.
    Type: Grant
    Filed: August 27, 1976
    Date of Patent: April 18, 1978
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Ammonium faujasite zeolites
    Patent number: 4058484
    Abstract: A process of producing an ammonium zeolite of the faujasite type in which a zeolite of the faujasite type whose exchange sites are substantially entirely occupied by Na cations, is treated with an ammonium salt solution to exchange substantially all of the Na cations with NH.sub.4 cations with substantially no impairment of crystallinity by a control of the relation of the equivalents of NH.sub.4 in the solution to equivalents of Na in the zeolite.
    Type: Grant
    Filed: September 9, 1976
    Date of Patent: November 15, 1977
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Hydrodesulfurization catalyst and process for producing the same
    Patent number: 4018714
    Abstract: A shaped hydrodesulfurization catalyst comprising a nonzeolitic substrate impregnated with a Group VI and a Group VIII catalytic metal and with a Group IV-B promoter and having a high resistance to abrasion and a process of producing the same employing a substantially nonacid Group IV-B metal compound as the source of the Group IV-B promoter.
    Type: Grant
    Filed: December 3, 1975
    Date of Patent: April 19, 1977
    Assignee: Filtrol Corporation
    Inventors: Geoffrey R. Wilson, Masami Kayamoto
  • Fluid cracking catalysts
    Patent number: 4010116
    Abstract: This invention relates to a high-activity catalyst of improved thermal stability employing a zeolite of the faujasite type, pseudoboehmite alumina gel and a synthetic mica-montmorillonite and may also include a clay.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: March 1, 1977
    Assignee: Filtrol Corporation
    Inventors: Robert B. Secor, Robert A. Van Nordstrand, David R. Pegg