Structure Defined X-ray Diffraction Pattern Patents (Class 423/718)
  • Patent number: 6605267
    Abstract: The present invention relates to new crystalline zeolite SSZ-50 prepared using a quaternary ammonium cation templating agent having the structure where X- is an anion which is not detrimental to the formation of the SSZ-50. SSZ-50 is useful in catalysts for hydrocarbon conversion reactions.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: August 12, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventors: Gregory S. Lee, Stacey I. Zones
  • Patent number: 6569401
    Abstract: The present invention relates to new crystalline molecular sieve SSZ-64 prepared using a N-cyclobutylmethyl-N-ethylhexamethyleneiminium cation or N-cyclobutylmethyl-N-ethylheptamethyleneiminium cation structure directing agent, and methods for synthesizing SSZ-64.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: May 27, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventor: Saleh Elomari
  • Patent number: 6555089
    Abstract: The present invention relates to new crystalline zeolite SSZ-58 prepared using a N-butyl-N-cyclooctylpyrrolidinium cation or N-propyl-N-cyclooctylpyrrolidinium cation templating agent, and processes employing SSZ-58 as a catalyst.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: April 29, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventor: Saleh Elomari
  • Patent number: 6555090
    Abstract: The invention deals with a microporous crystalline material, with a characteristic X-ray diffractogram, comprised of oxygen tetrahedra and a metal (T+4 and T+3) with the possibility of introducing surface acidity produced by the substitution in the lattice of some T+4 cations by T+3 cations, which gives rise to a structural charge deficiency that may be compensated by protons, Brönsted acidity, and/or high ratio radium charge cations, Lewis acidity; and the obtaining method thereof, based on the preparation of a gel, its hydrothermal treatment under controlled conditions and the treatment of the resulting laminar material with a solution of an organic compound, a swollen material being obtained, which is subjected to a treatment for the formation of interlaminar pillars of polymeric oxides, obtaining a pillared material that maintains the separation between the sheets, even after calcination.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: April 29, 2003
    Assignees: Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de Valencia
    Inventors: Antonio Chica Lara, Avelino Corma Canós, Vicente Fornés Segúi, Urbano Díaz Morales
  • Publication number: 20030068270
    Abstract: ETS-4 crystalline titanium silicate is produced so as to be enriched in at least one polymorph thereof which contains channels which interpenetrate the crystal lattice in both the b- and c-directions. A process of producing such a polymorph and enriched ETS-4 titanium silicate comprises the addition of a wetting agent to the reaction mixture.
    Type: Application
    Filed: September 4, 2002
    Publication date: April 10, 2003
    Inventors: Steven M. Kuznicki, Richard M. Jacubinas, Tadeuz W. Langner
  • Patent number: 6544495
    Abstract: The present invention relates to a new crystalline zeolite SSZ-57. The present invention also relates to crystalline zeolites prepared by using N-butyl-N-cyclohexylpyrrolidinium cation, N-propyl-N-cycloheptylpyrrolidinium cation or N-butyl-N-cyclooctylpyrrolidinium cation as structure directing agents.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: April 8, 2003
    Assignee: Chevron U.S.A. Inc.
    Inventor: Saleh Elomari
  • Publication number: 20030049200
    Abstract: Rare earth silicate octahedral/tetrahedral molecular sieves with the octahedral chains as rare earth centers exhibit enhanced thermal and hydrothermal stability.
    Type: Application
    Filed: September 5, 2001
    Publication date: March 13, 2003
    Inventors: Steven M. Kuznicki, Richard M. Jacubinas
  • Publication number: 20030012729
    Abstract: This invention relates to a new synthetic porous crystalline material, designated MCM-71, a method for its preparation and its use in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern and has a unique 3-dimensional channel system comprising generally straight, highly elliptical channels, each of which is defined by 10-membered rings of tetrahedrally coordinated atoms, intersecting with sinusoidal channels, each of which is defined by 8-membered rings of tetrahedrally coordinated atoms.
    Type: Application
    Filed: May 1, 2002
    Publication date: January 16, 2003
    Inventor: Sandeep S. Dhingra
  • Publication number: 20030003046
    Abstract: The invention concerns a microporous crystalline material, with a characteristic X-ray diffractogram, made up by oxygen tetrahedra and one metal (T+4 and T+3) with the possibility of introducing surface acidity produced by the substitution in the network of some T+4 cations (normally Si+4) by T+3 cations (normally Al+3), which gives rise to a structural charge deficiency which can be offset by protons, Brönsted acidity, and/or cations with a high charge-radium ratio, Lewis acidity.
    Type: Application
    Filed: January 15, 2002
    Publication date: January 2, 2003
    Inventors: Avelino Corma Canos, Vicente Fornes Segui, Urbano Diaz Morales
  • Patent number: 6500404
    Abstract: The present invention refers to a crystalline material of zeolitic nature named ITQ-3 characterized by its characteristic X-ray diffraction pattern and its microporous properties, to the process of preparation thereof characterized by the use of one or several organic additives in a reaction mixture that is made to crystallize by heating and to the use thereof in processes of separation and transformation of organic compounds, which material has the empirical formula x(M1/nXO2):yYO2:SiO2 where x has a value lower than 0.15 and may be equal to zero; and y has a value lower than 0.1 and may be equal to zero; M is H+ or an inorganic cation of charge +n, X is a chemical element with oxidation state (Al, Ge, B and Cr), Y is a chemical element with oxidation state (Ti, Ge and V), and when x=0 and y=0 can be described as a new polymorphous of silica of microporous nature.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: December 31, 2002
    Assignees: Consejo Superior de Investigacones Cientificas, Universidad Politecnica de Valencia
    Inventors: Miguel-Angel Camblor Fernandez, Avelino Corma Canos, Luis-Angel Villaescusa Alonso
  • Publication number: 20020182145
    Abstract: The present invention refers to a microporous rystalline material of zeolitic nature named ITQ-10, to the process of its preparation and to the use of ITQ-10 in processes of separation and transformation of organic compounds.
    Type: Application
    Filed: January 29, 2002
    Publication date: December 5, 2002
    Inventors: Miguel Angel Camblor Fernandez, Maria Jose Diaz Cabanas
  • Patent number: 6478854
    Abstract: There is provided, in a simple, rapid and efficient manner, a high purity, low silica X-type zeolite binderless shaped product with a high content of low silica X-type zeolite and high crystallinity, very high crush resistance and attrition resistance, and excellent adsorption performance. There is further provided an efficient gas separation method utilizing the high purity, low silica X-type zeolite binderless shaped product. With the high purity, low silica X-type zeolite binderless shaped product, the peak intensity of the faujasite zeolite at the index of 220 is stronger than the peak intensity at the index of 311 according to X-ray diffraction, and from approximately 60% to approximately 90% of the exchangeable cation sites are sodium while all or a portion of the remainder are potassium; the high purity, low silica X-type zeolite binderless shaped product also has all or a portion of the exchangeable cation sites are ion-exchanged with lithium.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: November 12, 2002
    Assignee: Tosoh Corporation
    Inventors: Yasuki Kotagiri, Atsushi Harada, Yoshiyuki Nakamoto, Satoshi Yoshida, Shigeru Hirano
  • Patent number: 6475463
    Abstract: The present invention relates to new crystalline zeolite SSZ-55 prepared using a phenylcycloalkylmethyl ammonium or N-cyclohexyl-N-(2-methylpropyl)pyrrolidinium cation templating agents.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: November 5, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Elomari, Thomas V. Harris
  • Patent number: 6471941
    Abstract: A new synthetic porous crystalline material, designated ITQ-13, is disclosed having, in its calcined form, the X-ray diffraction pattern of Table 2 above. Also disclosed are methods of making ITQ-13 in its silicate and borosilicate forms in the presence of HF using hexamethonium dihydroxide as a directing agent and hydolyzed tetraethylorthosilicate as a silica source. Aluminum-containing ITQ-13 can be produced by Al exchange of the borosilicate material. ITQ-13 is useful as an acid catalyst and as an adsorbent.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: October 29, 2002
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Teresa Boix, Marta Puche, Miguel A. Camblor, Avelino Corma
  • Patent number: 6471939
    Abstract: A new synthetic porous crystalline material, designated ITQ-12, is disclosed having, in its calcined form, the X-ray diffraction pattern of Table 2 herein. Also disclosed are methods of making ITQ-12 in its silicate, aluminosilicate and borosilicate forms in the presence of HF using 1,3,5-trimethylimidazole as a directing agent and hydolyzed tetraethylorthosilicate as a silica source. ITQ-12 is useful in the conversion of methanol to olefins and as an adsorbent.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: October 29, 2002
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Teresa Boix, Marta Puche, Miguel A. Camblor, Avelino Corma
  • Patent number: 6469226
    Abstract: The invention concerns a microporous oxide material ITQ6, with a characteristic X-ray diffraction pattern, and surface areas for which microporous surface area may be of at least 20 m2/g the external surface area may be at least 350 m2/g and the total surface area may be at least 400 m2/g. It may be made via preparation of gel, its hydrothermal treatment, and the treatment of the resulting material with a swelling solution followed by at least partial delamination e.g., by mechanical agitation or ultrasonics. The final oxide material is calcined and, in its acid form or combined with metals, especially noble metals, is useful as catalyst for the isomerization of n-butene to isobutene, or in dewaxing and isodewaxing processes and as a catalytic cracking catalyst or as an additive in FCC catalysts.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: October 22, 2002
    Assignee: BP Oil International Limited
    Inventors: Antonio Chica Lara, Urbano Diaz Morales, Vicente Fornes Segui, Avelino Corma Canos
  • Patent number: 6464957
    Abstract: ETS-4 crystalline titanium silicate is produced so as to be enriched in at least one polymorph thereof which contains channels which interpenetrate the crystal lattice in both the b- and c-directions. A process of producing such a polymorph and enriched ETS-4 titanium silicate comprises the addition of a wetting agent to the reaction mixture.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: October 15, 2002
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Richard M. Jacubinas, Tadeuz W. Langner
  • Patent number: 6464956
    Abstract: The present invention relates to new crystalline zeolite SSZ-59 prepared using a N-methyl-N-[(1-phenylcyclopentyl)methyl]heptamethyleneiminium cation, N-methyl-N-[(1-(4-chlorophenyl)cyclopentyl)methyl]heptamethyleneiminium cation, N-methyl-N-[(1-(4-chlorophenyl)cyclopentyl)methyl]hexamethyleneiminium cation, N-methyl-N-[(1-phenylcyclopentyl)methyl]hexamethyleneiminium cation, N-methyl-N-[(1-phenylcyclopentyl)methyl]piperidinium cation or N-methyl-N-[(1-(4-chlorophenyl)cyclopentyl)methyl]piperidinium cation templating agent, and processes employing SSZ-59 as a catalyst.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: October 15, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventor: Saleh Elomari
  • Patent number: 6444191
    Abstract: The present invention relates to a process for preparing the zeolite ZSM-11 using 3,5-dimethylpiperidinium compounds as an organic templating agent, and to the zeolite ZSM-11 in the pure phase form.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: September 3, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventor: Yumi Nakagawa
  • Patent number: 6419895
    Abstract: Applicants have synthesized a new aluminosilicate zeolite identified as UZM-4. This new zeolite has the BPH morphology and is structurally related to zeolite Q. UZM-4 has en empirical formula of Mmn+Rrp+Al1−xExSiyOz where M is an alkali or alkaline earth metal ion, R can be a quaternary ammonium ion and E can be gallium, iron, boron, chromium, indium and mixtures thereof. The Si/Al ratio can range from 1.5 to about 4.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: July 16, 2002
    Assignee: UOP LLC
    Inventors: Gregory J. Lewis, Jaime G. Moscoso, Mark A. Miller, Ben A. Wilson
  • Patent number: 6419819
    Abstract: This invention relates to a new synthetic porous crystalline material, designated MCM-67, a method for its preparation and use thereof in catalytic conversion of organic compounds. MCM-67 appears to be closely related in structure to VPI-8 and SSZ-41 but is synthesized without zinc and in the presence of manganese and/or cobalt ions.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: July 16, 2002
    Assignee: ExxonMobil Oil Corporation
    Inventors: Sandeep Singh Dhingra, Charles T. Kresge, Robin P. Ziebarth
  • Patent number: 6419891
    Abstract: This invention relates to a new synthetic crystalline material comprising acidic surface silanol groups, designated MCM-69, a method for its preparation and use thereof in catalytic conversion of organic compounds.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: July 16, 2002
    Assignee: ExxonMobil Oil Corporation
    Inventors: Carrie L. Kennedy, Gordon J. Kennedy, Stephen L. Lawton, Louis D. Rollmann, John L. Schlenker
  • Patent number: 6409986
    Abstract: The present invention relates to zeolithic materials having a characteristic X ray diffraction pattern, and its preparation method, characterized by the relatively low pH of the synthesis medium and the use of F− anions as mineralizing agent. The invention also claims the use of the obtained material in catalytic processes for the transformation of hydrocarbons and in oxidation process. The method comprises heating at 363-473° K a reaction mixture which contains a source of at least one tetravalent element T(IV), optionally a source of an element T(III), optionally H2O2, a structure director organic cation, a source of anions F− and water, the presence of alkaline cations is not necessary.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: June 25, 2002
    Assignee: Consejo Superior de Investigaciones Cientificas Universidad Politecnica de Valencia
    Inventors: Miguel-Angel Camblor Fernandez, Avelino Corma Canos, Susana Valencia Valencia
  • Patent number: 6391278
    Abstract: A neutral templating route to mesoporous molecular sieves based on H-bonding and self-assembly between neutral primary amine or diamine surfactants (S°) and neutral inorganic precursors (I°) has been used to prepare hexagonal and lamellar mesoporous silicas with site isolated transition metal centers. This templating approach allows for the preparation of hexagonal or hexagonal-like mesoporous oxidation catalysts with large framework wall thickness of at least about 17 Å, small elementary particle size (≦400 Å), and unique combinations of framework-confined mesopores and textural mesopores while at the same time providing for facile recovery of the neutral template by simple solvent extraction.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: May 21, 2002
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Thomas J. Pinnavaia, Peter T. Tanev, Wenzhong Zhang, Jialiang Wang, Malama Chibwe
  • Patent number: 6348183
    Abstract: The present invention relates to new crystalline zeolite SSZ-47 prepared using a bicyclo ammonium cation templating agent.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: February 19, 2002
    Assignee: Chevron U.S.A., Inc.
    Inventors: Gregory S. Lee, Yumi Nakagawa, Stacey I. Zones
  • Patent number: 6334994
    Abstract: Microporous crystalline silico-alumino-phosphate (SAPO) compositions, catalytic materials comprising the composition, and use of these for production of olefins from methanol. The catalysts contain silico-alumino-phosphate materials with AEI/CHA-mixed phase composition. The catalysts have prolonged life compared to those belonging to the prior art.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: January 1, 2002
    Assignee: Norsk Hydro ASA
    Inventors: Rune Wendelbo, Duncan E. Akporiaye, Anne Andersen, Martin Ivar Dahl, Helle Brit Mostad, Terje Fuglerud, Steinar Kvisle
  • Patent number: 6319427
    Abstract: There are provided mesoporous silica materials containing in their pores stabilized clusters of silicon atoms, of size 2 nanometers or less, and capable of photoluminescence to emit fast photons. They are prepared by chemical vapour deposition of silicon or a silicon precursor such as disilane, under soft conditions such as temperature of 100-150° C., into the mesopores of silicate films which have mesoporous channels prepared by growth of the films using a template to control their sizes, but without removing the template residues from the films prior to the chemical vapour deposition. The template residues serve to limit the size of the silicon clusters which conform. The use of the soft conditions on CVD retains the template residues in an intact, substantially unchanged form. The resultant films have clusters of silicon, of 2 nanometer size or less, anchored to the mesopores, and air stable, so that they can be used in optoelectronic devices in conjunction with standard silicon semiconductors.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: November 20, 2001
    Inventors: Geoffrey A. Ozin, Ömer Dag, Hong Yang
  • Patent number: 6306362
    Abstract: The present invention is directed to a large-pore aluminosilicate molecular sieve comprising alumina and silica, where the ratio of SiO2/Al2O3 ranges from about 75 to 600, and its method of preparation. The large-pore aluminosilicate molecular sieve of the present invention has the ability to catalyze reactions involving particularly bulky transition states or large molecules.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: October 23, 2001
    Assignee: ExxonMobil Oil Corporation
    Inventors: Scott S. Han, David Owen Marler, Louis Deane Rollmann, John L. Schlenker, Suzanne Elaine Schramm, Jeffrey Scott Beck
  • Publication number: 20010031241
    Abstract: The invention relates to an acidic silicoaluminate solid that has a microporous zeolitic phase that is characterized by at least one infrared band between 400-1600 cm-1, an organized mesoporosity that is characterized by the presence of at least one X-diffraction line between 20-100 Å, a silica/alumina molar ratio of between 5-250 and an acidity that is measured by infrared analysis via an area of the band at about 1545 cm-1 at least equal to 50 g of dry solid.
    Type: Application
    Filed: December 14, 2000
    Publication date: October 18, 2001
    Inventors: Sylvie Lacombe, David Marseault, Philippe Caullet, Henri Kessler, Eric Benazzi, Alexandre Jouve
  • Publication number: 20010022961
    Abstract: The present invention relates to new crystalline zeolite SSZ-52 prepared using a quaternary ammonium cation templating agent having the structure 1
    Type: Application
    Filed: February 21, 2001
    Publication date: September 20, 2001
    Inventors: Gregory S. Lee, Stacey I. Zones
  • Patent number: 6277355
    Abstract: High activity ZSM-5 and ZSM-11, with alpha values of 1000 to 3500, are produced by synthesis from a reaction mixture containing an organic directing agent selected from a non-cyclic amine having the formula (C2H6N)nNmHq wherein n is 1, 2 or 3; m is 0 or 1; q is 0, 1 or 2 and (n+m+q) is either 2 or 4.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: August 21, 2001
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Carrie L. Kennedy, Louis D. Rollmann, John L. Schlenker
  • Patent number: 6261534
    Abstract: The invention includes a method for preparing a crystalline zeolite having the X-ray diffraction lines of Table 1. The method includes preparing a template-free reaction mixture including at least one active source of a first oxide selected from the group consisting of an oxide of silicon, germanium or both, optionally at least one active source of a second oxide selected from the group consisting of an oxide of aluminum, boron, gallium, iron or a mixture thereof; and heating the reaction mixture at crystallization conditions for sufficient time to form a crystallized material containing zeolite crystals having the X-ray diffraction lines of Table 1, where said zeolite crystals have a first oxide/second oxide molar ratio greater than 12.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: July 17, 2001
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stephen J. Miller
  • Patent number: 6254849
    Abstract: The present invention relates to new crystalline zeolite SSZ-52 prepared using a quaternary ammonium cation templating agent having the structure where X— is an anion which is not detrimental to the formation of the SSZ-52. SSZ-52 is useful in catalysts for hydrocarbon conversion reactions.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: July 3, 2001
    Assignee: Chevron U.S.A. Inc.
    Inventors: Gregory S. Lee, Stacey I. Zones
  • Publication number: 20010000323
    Abstract: The present invention relates to new crystalline zeolite SSZ-47 prepared using a bicyclo ammonium cation templating agent.
    Type: Application
    Filed: November 30, 2000
    Publication date: April 19, 2001
    Inventors: Gregory S. Lee, Yumi Nakagawa, Stacey I. Zones
  • Patent number: 6156290
    Abstract: The present invention relates to new crystalline zeolite SSZ-47 prepared using a bicyclo ammonium cation templating agent.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: December 5, 2000
    Assignee: Chevron U.S.A. Inc.
    Inventors: Gregory S. Lee, Yumi Nakagawa, Stacey I. Zones
  • Patent number: 6136291
    Abstract: Novel crystalline zeolitic materials of the faujasite structure having an increased ratio of zeolitic surface area to mesoporous surface area and distinctive X-Ray Diffraction peak ratios are produced by calcining zeolite Y of low sodium content at temperatures above 600.degree. C.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: October 24, 2000
    Assignee: Mobile Oil Corporation
    Inventors: Arthur W. Chester, C. Patricia Clement, Scott Han
  • Patent number: 6136290
    Abstract: The invention concerns IM-5 zeolite with a chemical composition with the following formula, expressed in terms of the mole ratios of the oxides for the anhydrous state: 100XO.sub.2,mY.sub.2 O.sub.3, pR.sub.2/n O where m is 10 or less; p is in the range 0 to 20; R represents one or more cations with valency n; X represents silicon and/or germanium; Y represents one or more of the following elements: aluminum, iron, gallium, boron and titanium. The zeolite is characterized by an Xray diffraction diagram, in its as synthesized state, which comprises the results shown in Table 1 of the description. The invention also concerns the preparation of the zeolite, any catalyst containing the zeolite and any catalytic process using such a catalyst.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: October 24, 2000
    Assignee: Institut Francais de Petrole
    Inventors: Eric Benazzi, Jean-Louis Guth, Loic Rouleau
  • Patent number: 6103215
    Abstract: An aluminosilicate zeolite is disclosed which has a silica/alumina mole ratio of about 500 or less and pores with at least one cross-sectional dimension greater than 7.5 Angstroms. Also disclosed is a zeolite comprising a first oxide selected from the group consisting of silicon oxide, germanium oxide and mixtures thereof and a second oxide selected from the group consisting of aluminum oxide, gallium oxide, iron oxide, indium oxide and mixtures of aluminum oxide, boron oxide, gallium oxide, iron oxide, indium oxide, titanium oxide, and vanadium oxide, the zeolite having, after calcination, the X-ray diffraction lines of Table I, and having a mole ratio of the first oxide to the second oxide of about 500 or less. The zeolites are useful in catalysts for hydrocarbon conversion reactions.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: August 15, 2000
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Cong-Yan Chen
  • Patent number: 6086848
    Abstract: The present invention relates to a process for preparing zeolites having 12-ring pores and having at least one internal pore structure with a cross section measuring greater than 7.5 .ANG. using substituted-piperidinium cations as organic templates.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: July 11, 2000
    Assignee: Chevron U.S.A. Inc.
    Inventors: Yumi Nakagawa, Gregory S. Lee, Stacey I. Zones
  • Patent number: 6080382
    Abstract: The present invention relates to new crystalline zeolite SSZ-48 prepared using a decahydroquinolinium cation templating agent.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: June 27, 2000
    Assignee: Chevron U. S. A. Inc.
    Inventors: Gregory S. Lee, Stacey I. Zones
  • Patent number: 6077498
    Abstract: The present invention relates to a microporous crystalline material of zeolitic nature, called ITQ-1A, to the process for its preparation and its use in processes of separation and transformation of organic compounds. In the roasted and anhydrous stage, the chemical composition of the material corresponds to the empirical formula: x(M.sub.1/n XO.sub.2):yYO.sub.2 :SiO.sub.2, wherein x has a value smaller than 0.02 and may equal 0: y has a value smaller than 0.04 and may equal 0: m is H.sup.+ or an inorganic cation with the charge +n: X is a chemical element with an oxidation status +3 (Al, Ga, B, Cr) and Y is a chemical element with an oxidation status +4 (Ti, Ge, V). When x=0 and y=0, the material may be described as a new polymorphe form of microporous silica. The material of this invention is characterized also by its X ray diffraction pattern.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: June 20, 2000
    Assignees: Consejo Superior Investigaciones Cientificas, Universidad Politecnica de Valencia
    Inventors: Maria Jose Diaz Cabanas, Miguel Angel Camblor Fernandez, Catalina Corell Martires, Avelino Corma Canos
  • Patent number: 6068682
    Abstract: Novel gas separation agents with precisely and predictably controlled pore sizes within the range of 3-4 Angstrom units and their preparation from ETS-4 by exchange with cations, particularly multivalent cations such as strontium followed by drying and calcination to effect controlled pore shrinkage is disclosed. These novel materials have utility in gas separation processes particularly the separation of nitrogen from a mixture of the same with methane.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: May 30, 2000
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Valerie A. Bell, Ivan Petrovic, Bipin T. Desai
  • Patent number: 6063262
    Abstract: This invention relates to a new synthetic porous crystalline material, designated MCM-67, a method for its preparation and use thereof in catalytic conversion of organic compounds. MCM-67 appears to be closely related in structure to VPI-8 and SSZ-41 but is synthesized without zinc and in the presence of manganese and/or cobalt ions.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: May 16, 2000
    Assignee: Mobil Oil Corporation
    Inventors: Sandeep S. Dhingra, Charles T. Kresge, Robin P. Ziebarth
  • Patent number: 6049018
    Abstract: This invention relates to a new synthetic porous crystalline material, designated MCM-68, a method and novel polycyclic organic cation for its preparation and its use in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern and has a unique crystal structure which contains at least one channel system, in which each channel is defined by a 12-membered ring of tetrahedrally coordinated atoms, and at least two further, independent channel systems, in each of which each channel is defined by a 10-membered ring of tetrahedrally coordinated atoms, wherein the number of unique 10-membered ring channels is twice the number of 12-membered ring channels.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: April 11, 2000
    Assignee: Mobil Corporation
    Inventors: David C. Calabro, Jane C. Cheng, Robert A. Crane, Jr., Charles T. Kresge, Sandeep S. Dhingra, Michael A. Steckel, David L. Stern, Simon C. Weston
  • Patent number: 6043179
    Abstract: The present invention relates to new crystalline zeolite CIT-5 prepared using a N(16) methylsparteinium cation templating agent.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: March 28, 2000
    Assignee: California Institute of Technology
    Inventors: Mark E. Davis, Masahito Yoshikawa
  • Patent number: 6040258
    Abstract: The present invention relates to new crystalline zeolite CIT-5 prepared using a N(16) methylsparteinium cation templating agent.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: March 21, 2000
    Assignee: California Institute of Technology
    Inventors: Masahito Yoshikawa, Mark E. Davis
  • Patent number: 6033643
    Abstract: The present invention relates to new crystalline zeolite SSZ-45 prepared using an N-substituted DABCO cation templating agent.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: March 7, 2000
    Assignee: Chevron U.S.A. Inc.
    Inventors: Lun-Teh Yuen, Stacy I. Zones
  • Patent number: 6027666
    Abstract: There are provided mesoporous silica materials containing in their pores stabilized clusters of silicon atom, of size 2 nanometers or less, and capable of photoluminescence to emit fast photons. They are prepared by chemical vapor deposition of silicon or a silicon precursor such as disilane, under soft conditions such as temperature of 100-150.degree. C., into the mesopores of silicate films which have mesoporous channels prepared by growth of the films using a template to control their sizes, but without removing the template residues from the films prior to the chemical vapor deposition. The template residues serve to limit the size of the silicon clusters which conform. The use of the soft conditions on CVD retains the template residues in an intact, substantially unchanged form. The resultant films have clusters of silicon, of 2 nanometer size or less, anchored to the mesopores, and air stable, so that they can be used in optoelectronic devices in conjunction with standard silicon semiconductors.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: February 22, 2000
    Assignee: The Governing Council of the University of Toronto
    Inventors: Geoffrey A. Ozin, Omer Dag, Hong Yang
  • Patent number: 6027707
    Abstract: The invention concerns NU-88 zeolite, characterized by:i) a chemical composition with the following formula, expressed in terms of the mole ratios of the oxides for the anhydrous state:100 XO.sub.2, mY.sub.2 O.sub.3, pR.sub.2/n Owherem is 10 or less;p is 20 or less;R represents one or more cations with valency n;X represents silicon and/or germanium;Y represents one or more of the following elements: aluminium, iron, gallium, boron, titanium, vanadium, zirconium, molybdenum, arsenic, antimony, chromium and manganese; andii) an X ray diffraction diagram, in its as synthesized state, which comprises the results shown in Table 1 of the description.The invention also concerns the preparation of the zeolite, any catalyst containing the zeolite and any catalytic process using such a catalyst.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: February 22, 2000
    Assignee: Institut Francais du Petrole
    Inventors: John Leonello Casci, Sheena Maberly, Eric Benazzi, Loic Rouleau, Roland Patrick Henney
  • Patent number: 6017508
    Abstract: A process of modifying the porosity of an aluminosilicate or silica whose porosity is not amenable to modification by acid extraction. The process involves contacting said aluminosilicate or silica with an alkali aluminate, and then extracting the aluminate-treated material with an extraction agent so as to form the porosity-modified aluminosilicate or silica. The process is applicable to zeolites which are unreactive under acid extraction conditions, e.g. ferrierite, and applicable to zeolites which are structurally unstable under acid extraction conditions, such as the mineral bikitaite. Mesoporous compositions are disclosed, including a mesoporous ferrierite and a mesoporous zeolite DCM-3.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: January 25, 2000
    Assignee: The Dow Chemical Company
    Inventors: Dean M. Millar, Juan M. Garces