Synthesized From Naturally Occurring Product Patents (Class 423/712)
  • Patent number: 10975928
    Abstract: An asbestos-free friction material having at least one of the group consisting of inorganic, organic and metallic fibers, at least one binder, at least one friction modifier or lubricant and at least a filler or abrasive, wherein the binder is almost completely and exclusively inorganic and is constituted almost exclusively by a hydrated geopolymer or a blend of hydrated geopolymers.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: April 13, 2021
    Inventors: Agustin Sin Xicola, Alessandro Angeleri, Federico Lupone, Dario Caldarola, Alberto Conte, Paolo Colombo
  • Patent number: 10894248
    Abstract: The present invention provides a catalyst composition comprising rare earth exchanged USY zeolite (REUSY); pentasil zeolite; phosphorous compound; clay, silica, alumina, and spinel to enhance the catalytic activity and selectivity for light olefins in FCC operation conditions. The present invention also provides a process for the preparation of Light olefin enhancing catalyst composition with high propylene yield and coke selectivity.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: January 19, 2021
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Mohan Prabhu Kuvettu, Arumugam Velayutham Karthikeyani, Velusamy Chidambaram, Kumaresan Loganathan, Alex Cheru Pulikottil, Sanjiv Kumar Mazumdar, Sankara Sri Venkata Ramakumar
  • Patent number: 10286391
    Abstract: Processes for making a catalytic system and catalytic systems for converting solid biomass into fuel or specialty chemical products, or for upgrading bio-oils are described. The catalyst system may comprise a non-zeolitic matrix with a hierarchical pore structure ranging from 300 to about 104 Angstrom pore size, a zeolite, such as MFI-type or IM-5 zeolite, and a binder.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: May 14, 2019
    Assignee: Inaeris Technologies, LLC
    Inventors: Dennis Stamires, Michael Brady
  • Patent number: 10207257
    Abstract: A zeolite-containing fixed bed catalyst is formed by pre-shaping a mixture of a reactive aluminum-containing component and a matrix component into pre-shaped particles, and contacting the pre-shaped particles with a reactive liquid containing a silicate for a sufficient time and temperature to form an in-situ zeolite within the pre-shaped particles. The contacting of the pre-shaped particles and the liquid is achieved such that there is relative movement between the pre-shaped particles and the liquid.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: February 19, 2019
    Assignee: BASF Corporation
    Inventors: Xingtao Gao, David Stockwell, Gary M. Smith
  • Patent number: 10086367
    Abstract: Described are fluid catalytic cracking (FCC) compositions, methods of manufacture and use. FCC catalyst compositions comprise catalytic microspheres containing a zeolite, a non-zeolitic component, and a rare earth component. The microspheres are modified with phosphorus. The FCC catalyst composition can be used to crack hydrocarbon feeds, particularly resid feeds containing high V and Ni, resulting in lower hydrogen and coke yields.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: October 2, 2018
    Assignee: BASF CORPORATION
    Inventors: Gary M. Smith, Robert McGuire, Jr., Bilge Yilmaz
  • Patent number: 9682361
    Abstract: The invention relates to a X-zeolite based adsorbent granulate with faujasite structure and a molar SiO2/Al2O3 ratio of ?2.1-2.5, wherein the granulate has an average transport pore diameter of >300 nm and a negligible fraction of meso-pores and wherein the mechanical properties of the granulate are at least the same as or better than the properties of an X-zeolite based granulate formed using an inert binder and the equilibrium adsorption capacities for water, CO2 and nitrogen are identical to those of pure X-zeolite powder with a similar composition.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: June 20, 2017
    Assignee: CHEMIEWERK BAD KOSTRITZ GMBH
    Inventors: Alfons Brandt, Jens Schmeisser, Baldur Unger, Hartmut Tschritter, Uwe Henkel, Gojdár Bálint, Dietmar Gruhle, Georg Winterstein
  • Patent number: 9301440
    Abstract: Disclosed are manure amendment compositions containing a dry or liquid mixture of (1) alum mud and at least one member selected from the group consisting of acid (e.g., sulfuric), bauxite, and mixtures thereof, or (2) bauxite and at least one member selected from the group consisting of acid (e.g., sulfuric), alum mud, and mixtures thereof, which when added to animal manure will form a treated manure product having improved environmental, health and/or animal performance. Also disclosed are various methods of using the manure amendment composition.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: April 5, 2016
    Assignee: The United States of America, as represented by The Secretary of Agriculture
    Inventor: Philip A. Moore, Jr.
  • Patent number: 8859448
    Abstract: Binderless BaKX zeolitic adsorbents, methods for their production, and processes for their use in a liquid phase adsorptive separation process are provided. An adsorbent includes a binder-converted zeolite portion formed from x wt % kaolin clay binder and (100?x) wt % unconverted Zeolite X with a silica:alumina molar ratio of about 2.5. The kaolin clay binder is in the range of about 10 to about 20 wt %. Ba and K occupy cationic exchangeable sites within the adsorbent. K is in the range of about 0.25 to about 0.9% by weight and Ba is greater than about 31.6% by weight of the binderless BaKX zeolitic adsorbent. Cornstarch may be added to the Zeolite X and kaolin clay binder to increase adsorbent macro-porosity and pore volume. Productivity of the adsorbent is improved decreasing process operating costs. The mechanical strength of the adsorbent is also improved.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: October 14, 2014
    Assignee: UOP LLC
    Inventors: Linda Shi Cheng, Jack Hurst
  • Patent number: 8835342
    Abstract: One aspect of the present invention relates to mesostructured zeolites. The invention also relates to a method of preparing mesostructured zeolites, as well as using them as cracking catalysts for organic compounds and degradation catalysts for polymers.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: September 16, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Jackie Y Ying, Javier Garcia-Martinez
  • Patent number: 8524624
    Abstract: One aspect of the present invention relates to mesostructured zeolites. The invention also relates to a method of preparing mesostructured zeolites, as well as using them as cracking catalysts for organic compounds and degradation catalysts for polymers.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: September 3, 2013
    Assignee: Massachusetts Institute of Technology
    Inventor: Javier Garcia-Martinez
  • Patent number: 8440166
    Abstract: A titanium silicate variant named UPRM-5 was prepared using tetraethylammonium hydroxide as a structure-directing agent (SDA). Successful detemplation was achieved via ion exchange with NH4Cl. Effective functionalization was obtained after ion exchanging the detemplated material using SrCl2 and BaCl2. Adsorption of CO2 at 25° C. in Sr- and Ba-UPRM-5 materials activated at different temperatures. For low partial pressures, the observed CO2 adsorption capacities increased as follows: NH4-UPRM-5<Sr-UPRM-5<Ba-UPRM-5. Both the Sr- and Ba-UPRM-5 materials exhibited outstanding selectivity for CO2 over CH4, N2 and O2.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: May 14, 2013
    Assignee: University of Puerto Rico
    Inventors: Arturo Hernandez-Maldonado, Jose N Primera-Pedrozo
  • Patent number: 8105548
    Abstract: A zeolite membrane production apparatus is provided having a reaction container having a support insertion opening for insertion of tubular supports and which houses a reaction solution for formation of zeolite membranes on the surfaces of the supports, a heating means for heating the reaction solution through the reaction container, and a supporting apparatus provided on the reaction container in a freely detachable manner and which supports a plurality of the supports. The inner wall surface of the reaction container has two mutually parallel flat surfaces, the supporting apparatus has a plurality of supporting sections that anchor one end of each of the plurality of supports, and the plurality of supporting sections are provided in the supporting apparatus such that when the supporting apparatus is set in the reaction container, each of the plurality of supports is disposed between the two flat surfaces and parallel to the two flat surfaces.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: January 31, 2012
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Soushi Inoue
  • Publication number: 20110104494
    Abstract: The invention relates to a X-zeolite based adsorbent granulate with faujasite structure and a molar SiO2/Al2O3 ratio of ?2.1-2.5, wherein the granulate has an average transport pore diameter of >300 nm and a negligible fraction of meso-pores and wherein the mechanical properties of the granulate are at least the same as or better than the properties of an X-zeolite based granulate formed using an inert binder and the equilibrium adsorption capacities for water, CO2 and nitrogen are identical to those of pure X-zeolite powder with a similar composition.
    Type: Application
    Filed: February 27, 2009
    Publication date: May 5, 2011
    Applicant: CHEMIEWERK BAD KOSTRITZ GMBH
    Inventors: Alfons Brandt, Jens Schmeisser, Baldur Unger, Hartmut Tschritter, Uwe Henkel, Bálint Gojdár, Dietmar Gruhle, Georg Winterstein
  • Patent number: 7807132
    Abstract: A quantity of solution sufficient to dissolve a pH controlling substance and/or substantially dissolve a surfactant without substantial excess solution is controlled under a set of time and temperature conditions to transform an inorganic material having long-range crystallinity to a mesostructure having long-range crystallinity. The method employs concentrated conditions that have a consistency similar to a thick slurry. The economic viability of scaling up such thick slurry methods is improved relative to prior more dilute methods of transforming an inorganic material to a mesostructure.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: October 5, 2010
    Assignee: Rive Technology, Inc.
    Inventor: Javier Garcia-Martinez
  • Patent number: 7601330
    Abstract: The present invention relates to a process for producing a binder-free ZSM-5 zeolite in small crystal size. The invention is primarily used for solving the problems in the practical application, e.g., the zeolite powder is difficult to be recovered and easily inactivates and aggregates, and the addition of the binder in the shaping process will result in the reduction of effective surface areas and introduce the diffusional limitation. Said problems are better solved in the present invention by using diatomite or silica aerogel as the main starting material, adding a seed crystal orienting agent, a silica sol and sodium silicate for kneading and shaping, and then converting to integrative ZSM-5 in small crystal size by vapor-solid phase crystallization with organic amine and water vapor. Said process can be used in the industrial preparation of ZSM-5 molecular sieve catalyst in small crystal size.
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: October 13, 2009
    Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petroleum Technology SINOPEC
    Inventors: Deju Wang, Zhongneng Liu, Jiang Zhao, Xinghua Jiang
  • Patent number: 7560093
    Abstract: The present invention provides a process for the preparation of detergent builder Zeolite-A from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting an acid treated Kimberlite tailing with alkali solution to obtain sodium silicate and reacting it with alkaline aluminum source at room temperature and crystallizing at higher temperature to obtain Zeolite-A. The product is useful as builder in detergent formulation.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: July 14, 2009
    Assignees: Council of Scientific and Industrial Research, National Mineral Development Corporation Limited
    Inventors: Raksh Vir Jasra, Rajesh Shantilal Somani, Haresh Mahipatlal Mody, Hari Chand Bajaj, Jatin Rameshchandra Chunawala, Hemal Ranpara, Dipti Barochiya, Devendra Ghelani, Suresh Chandra, Maharaj Kishen Dhar, Keshav Rao, Kamlesh Kumar
  • Publication number: 20080311033
    Abstract: The present invention provides a process for the preparation of detergent builder Zeolite-A from Kimberlite tailing generated as solid waste during diamond mining is disclosed. The process comprises, reacting an acid treated Kimberlite tailing with alkali solution to obtain sodium silicate and reacting it with alkaline aluminum source at room temperature and crystallizing at higher temperature to obtain Zeolite-A. The product is useful as builder in detergent formulation.
    Type: Application
    Filed: January 18, 2008
    Publication date: December 18, 2008
    Applicants: Council of Scientific and Industrial Research (CISR), National Mineral Development Corporation Limited
    Inventors: Raksh Vir Jasra, Rajesh Shantilal Somani, Haresh Mahipatial Mody, Hari Chand Bajaj, Jatin Rameshchandra Chunawala, Hemal Ranpara, Dipti Barochiya, Devendra Ghelani, Suresh Chandra, Maharaj Kishen Dhar, Keshav Rao, Kamlesh Kumar
  • Patent number: 7344695
    Abstract: A novel method of forming ZSM-5 comprises reacting calcined kaolin microspheres with silicate and a seed solution used for forming zeolite Y under conditions of pH, temperature, and time to yield ZSM-5 crystals formed in-situ on said calcined kaolin microspheres. The reaction medium does not contain any organic templates or ZSM-5 seeding crystals.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: March 18, 2008
    Assignee: Engelhard Corporation
    Inventors: Mingting Xu, John Macaoay
  • Patent number: 7341706
    Abstract: The invention concerns a simple and cheap method for production of microporous crystalline metalloaluminiumphosphates (ELAPO) for use as adsorbent or catalyst by wholly or partially filling the pores of particles containing aluminum phosphate (AIPO) with an aqueous mixture containing an active source of metal and an organic structure directing agent and perform crystallization at elevated temperature under autogenous pressure to form crystals of ELAPO.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: March 11, 2008
    Assignee: Polymers Holding AS
    Inventors: Terje Fuglerud, Arne Gidløv Grønvold, Eddy Walther Hansen, Ivar Martin Dahl, Åse Slagtern, Rune Wendelbo
  • Patent number: 7341707
    Abstract: The invention concerns a method for production of microporous crystalline metalloaluminium phosphates (ELAPO) based adsorbents or catalysts by in-situ crystallisation of ELAPO inside a formed body. First the formed body containing aluminium phosphate (AIPO) and binder is prepared, thereafter the organic structure directing agent, EL source and water are added and finally ELAPO is crystallised in-situ at elevated temperature and pressure, while keeping the shape and size of the formed body.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: March 11, 2008
    Assignee: Polymers Holding AS
    Inventors: Terje Fuglerud, Arne Gidløv Grønvold, Rune Wendelbo, Åse Slagtern, Ivar Martin Dahl
  • Patent number: 7267812
    Abstract: A crystalline inorganic porous material having two different types of pores which are macropores having a diameter in the micrometer range and micropores having a diameter in the angstrom range, at least part of the skeleton thereof having a zeolite structure. The crystalline inorganic porous material of the present invention has macropores and micropores and enables the effective transport of a substance by the macropores, thereby improving the effectiveness of the micropores of zeolite. Since a molded product can be obtained without using a binder, the selectivity of a reaction of interest can be improved in an acidic catalytic reaction or precision separation in adsorption/separation becomes possible.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: September 11, 2007
    Assignees: Tokuyama Coporation
    Inventors: Ryoji Takahashi, Satoshi Sato, Akiyuki Yachi
  • Patent number: 7132095
    Abstract: To provide a substance separating/recovery method using a superconductive magnetic field that separate and recover substances efficiently, to make the ashes harmless, and to generate zeolite. The method of the present invention includes: (1) a step, wherein the ashes resulting from the incineration of combustible waste are (a) introduced into a first tank 2 to form a liquid that contains, as a solvent, an alkaline aqueous solution or water, air, and electrolytic water, and (b) continuously reinjected into a first substance-separating/recovering device 1A to make the ashes harmless, and (2) a step, wherein clear water, which recovered in the first substance-separating/recovering device 1A and then returned to the first tank 2, is (c) introduced into a second tank 3 to form a heat-treated liquid that contains, an alkaline aqueous solution, and (d) continuously reintroduced into a second substance-separating/recovering device 1B to crystallize that heat-treated liquid into zeolite.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: November 7, 2006
    Inventor: Etsuro Sakagami
  • Patent number: 6991678
    Abstract: A process for the preparation of crystalline microporous titanium silicates using ethylsilicate-40 and titanium peroxide as silicon and titanium sources respectively is described. The process permits a significant decrease in the production cost of titanium silicate containing higher amount of titanium (Si/Ti=20) because of cheaper raw materials as well as reduction in the quantity of tetarpropylammonium hydroxide (TPAOH) template (SiO2:TPAOH=1:0.06–0.1) required for preparation. The material obtained by the present invention is useful as an active catalyst in the reactions such as oxidation of hydrocarbons, alcohols, sulphides, and thioethers.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: January 31, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Mohan Keraba Dongare, Pratap Tukaram Patil, Kusum Madhukar Malshe
  • Patent number: 6908603
    Abstract: A novel method of forming ZSM-5 comprises reacting calcined kaolin microspheres with silicate and a seed solution used for forming zeolite Y under conditions of pH, temperature, and time to yield ZSM-5 crystals formed in-situ on said calcined kaolin microspheres. The reaction medium does not contain any organic templates or ZSM-5 seeding crystals.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: June 21, 2005
    Assignee: Engelhard Corporation
    Inventors: Mingting Xu, John Macaoay
  • Patent number: 6835369
    Abstract: The present invention relates to new crystalline, molecular sieve CIT-6 that has the topology of zeolite beta. CIT-6 can be in an all-silica form, in a form wherein zinc is in the crystal framework, or a form containing silicon oxide and non-silicon oxides. In a preferred embodiment, CIT-6 has a crystal size of less than one micron and a water adsorption capacity of less than 0.05 g/g.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: December 28, 2004
    Assignee: California Institute of Technology
    Inventors: Takahiko Takewaki, Mark E. Davis
  • Publication number: 20040238407
    Abstract: A novel method of forming ZSM-5 comprises reacting calcined kaolin microspheres with silicate and a seed solution used for forming zeolite Y under conditions of pH, temperature, and time to yield ZSM-5 crystals formed in-situ on said calcined kaolin microspheres. The reaction medium does not contain any organic templates or ZSM-5 seeding crystals.
    Type: Application
    Filed: June 2, 2003
    Publication date: December 2, 2004
    Inventors: Mingting Xu, John Macaoay
  • Patent number: 6821502
    Abstract: Zeolites having the IFR structure and containing aluminum in their crystal structure can be made by preparing a reaction mixture comprising a zeolite which is an active source of aluminum oxide, an active source of alkali metal oxide, an active source of an oxide of a tetravalent element, an organic template selected from the group consisting of a 1-benzyl-4-aza-1-azonia-bicyclo[2.2.2]octane cation and a N-benzyl quinuclidinium cation, and maintaining the reaction mixture under conditions sufficient to form crystals of the zeolite.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: November 23, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Elomari, Stacey Zones
  • Publication number: 20040200757
    Abstract: The present invention relates to new crystalline, molecular sieve CIT-6 that has the topology of zeolite beta. CIT-6 can be in an all-silica form, in a form wherein zinc is in the crystal framework, or a form containing silicon oxide and non-silicon oxides. In a preferred embodiment, CIT-6 has a crystal size of less than one micron and a water adsorption capacity of less than 0.05 g/g.
    Type: Application
    Filed: December 2, 2002
    Publication date: October 14, 2004
    Inventors: Takahiko Takewaki, Mark E. Davis
  • Publication number: 20040101476
    Abstract: To provide a substance separating/recovery method using a superconductive magnetic field that separate and recover substances efficiently, to make the ashes harmless, and to generate zeolite. The method of the present invention includes: (1) a step, wherein the ashes resulting from the incineration of combustible waste are (a) introduced into a first tank 2 to form a liquid that contains, as a solvent, an alkaline aqueous solution or water, air, and electrolytic water, and (b) continuously reinjected into a first substance-separating/recovering device 1A to make the ashes harmless, and (2) a step, wherein clear water, which recovered in the first substance-separating/recovering device 1A and then returned to the first tank 2, is (c) introduced into a second tank 3 to form a heat-treated liquid that contains, an alkaline aqueous solution, and (d) continuously reintroduced into a second substance-separating/recovering device 1B to crystallize that heat-treated liquid into zeolite.
    Type: Application
    Filed: October 23, 2003
    Publication date: May 27, 2004
    Inventor: Etsuro Sakagami
  • Patent number: 6709644
    Abstract: The present invention relates to zeolites having the crystal structure of chabazite (CHA) and having small crystallite size, to processes using the small crystallite CHA as a catalyst, and to gas separation processes using the small crystallite CHA.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: March 23, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Lun-Teh Yuen, Stephen J. Miller
  • Patent number: 6692722
    Abstract: The present invention provides a zero emission type method for effective use permitting economical and effective manufacture of zeolite effectively applicable in various sectors of industry by using silicon-containing waste comprising at least one of exhaust gas treatment sludge mainly comprising SiO2 discharged from an optical film manufacturing plant, optical fiber refuse and preform refuse, and aluminum-containing waste comprising at least one of aluminum dross discharged from an aluminum-related manufacturing plant, aluminum dust collection ashes, sludge mainly comprising aluminum hydroxide, cleaning waste liquid of aluminum or an alloy thereof, scrap of metal aluminum or an alloy thereof, and alumina scrap.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: February 17, 2004
    Assignees: Furukawa Electric Co., Ltd., Kyowa Jigyo K.K.
    Inventors: Takao Ando, Teruo Henmi, Yoshihisa Asada
  • Patent number: 6685910
    Abstract: Novel morphologies are provided for aluminosilicate zeolite ion-exchange materials useful for static water softening. The zeolites are provided in the form of large aggregates composed of submicron zeolite crystals. Rapid exchange rates, high hardness ion capacity and increased attrition resistance characterize the zeolite ion exchangers.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: February 3, 2004
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell
  • Publication number: 20030232007
    Abstract: Zeolites having the IFR structure and containing aluminum in their crystal structure can be made by preparing a reaction mixture comprising a zeolite which is an active source of aluminum oxide, an active source of alkali metal oxide, an active source of an oxide of a tetravalent element, an organic template selected from the group consisting of a 1-benzyl-4-aza-1-azonia-bicyclo[2.2.2]octane cation and a N-benzyl quinuclidinium cation, and maintaining the reaction mixture under conditions sufficient to form crystals of the zeolite.
    Type: Application
    Filed: June 12, 2002
    Publication date: December 18, 2003
    Inventors: Saleh Elomari, Stacey Zones
  • Patent number: 6663845
    Abstract: A composition comprising an incineration ash or an aluminosilicate as a raw material is added with an aqueous alkaline solution from an alkali storage tank (3) and heated. The resultant pre-mixture is then mixed and kneaded by a kneader (4) to prepare a kneaded mixture (19) in the form of a slurry or mud. The kneaded mixture (19) is moved continuously and irradiated directly with an electromagnetic wave of 300 MHz to 30 GHz in an electromagnetic wave irradiation unit (21), to thereby convert it to zeolite. The zeolite thus formed is cleaned by means of a cleaning machine (7) and dried with a rotary steam dryer (9). This method can be employed for producing an artificial zeolite with a reduced amount of alkali used and discharged, at a lower energy expenditure, and a reduced time for production.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: December 16, 2003
    Assignees: Shintoh Ltd.
    Inventors: Nobuko Hasuyama, Takashi Nitta, Junichi Hojo
  • Patent number: 6662951
    Abstract: A process for extracting and purifying naturally occurring zeolite from ores in the presence of other mineral phases by using mechanical dispersion and differential suspension to remove a majority of the clay content of the ore. The process continues by removal of contaminants with a higher mass to surface area ratio than that of the desired zeolite product by employing the properties of demineralized water in combination with a countercurrent flow separation column. No chemical flocculating or flotation agents are employed in the process. The process separates the particulate compound by using the separation effect of an electrical double layer which forms when the mixture is hydrated in a low electrolyte medium.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: December 16, 2003
    Assignee: Basic Resources, Inc.
    Inventor: Billy D. Fellers
  • Patent number: 6599494
    Abstract: A process is provided for the preparation of artificial zeolite comprising the steps of (a) mixing x kilograms of incineration ash or any other aluminosilicate-containing substance with y liters of an aqueous solution of alkali metalhydroxide having a concentration of 1 N or higher in a proportion, y/x, of from about 0.1 to about 1.5 (liter/kg) to prepare a slurry, and (b) heating the slurry to cause a zeolite forming reaction. Water is continuously or intermittently removed by evaporation so that a decrease in a concentration of alkali which would otherwise naturally occur during the reaction is at least suppressed to thereby facilitate the reaction.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: July 29, 2003
    Assignee: K.E.M. Corporation
    Inventor: Yukuo Katayama
  • Publication number: 20030127359
    Abstract: The present invention relates to new crystalline, molecular sieve CIT-6 that has the topology of zeolite beta. CIT-6 can be in an all-silica form, in a form wherein zinc is in the crystal framework, or a form containing silicon oxide and non-silicon oxides. In a preferred embodiment, CIT-6 has a crystal size of less than one micron and a water adsorption capacity of less than 0.05 g/g.
    Type: Application
    Filed: December 2, 2002
    Publication date: July 10, 2003
    Inventors: Takahiko Takewaki, Mark E. Davis
  • 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: 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
  • Patent number: 6517807
    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: Grant
    Filed: November 14, 2001
    Date of Patent: February 11, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Johannes P. Verduijn, Gary David Mohr
  • Patent number: 6451283
    Abstract: This invention relates to zeolitic molecular sieve compositions and hybrid zeolite-silica compositions characterized by novel morphology in which the zeolite is present as macroscopic aggregates of microcrystalline zeolite. The zeolitic compositions of this invention have outstanding capability to complex multivalent cations, especially calcium due to the high exchange kinetics of the microcrystalline zeolite component and yet have the ease of handling due to the macroscopic aggregate assemblage.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: September 17, 2002
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell
  • Patent number: 6451282
    Abstract: The invention relates to a process for production of zeolites from raw materials with alkali alumino-hydrosilicate content comprising converting the alkali alumino-hydrosilicate content of the raw material into an amorphous state by acidic treatment, separating the intermediate amorphous solid material from the liquid phase and optionally purifying same, re-suspending it in water, alkalizing the suspension, followed by forming a slurry of the composition corresponding to the type of zeolite to be manufactured optionally by blending it with components containing SiO2, and/or Al2O3 and/or Na2O, followed by crystallization by method known per se after optionally adding crystal nuclei and/or aging of the synthesis slurry and separating the obtained zeolite product.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: September 17, 2002
    Inventors: Péter Siklósi, Pál Fejes, Imre Kiricsi, György Bánvölgyi
  • Patent number: 6436364
    Abstract: Hydrothermal synthesis of the natural, alkaline earth zeolites via the alteration of Y-zeolite is presented. Synthetic versions of the zeolites harmotome, heulandite, brewsterite and gmelinite are synthesized from Y-zeolite using alkaline earth cations containing solutions. The effect of the composition of the starting zeolite, the composition of the solution phase, the presence or absence of seeds and the experimental conditions are discussed.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: August 20, 2002
    Assignee: California Institute of Technology
    Inventors: Osamu Chiyoda, Mark E. Davis
  • Publication number: 20020106322
    Abstract: A process is provided for the preparation of artificial zeolite comprising the steps of (a) mixing x kilograms of incineration ash or any other aluminosilicate-containing substance with y liters of an aqueous solution of alkali metalhydroxide having a concentration of 1 N or higher in a proportion, y/x, of from about 0.1 to about 1.5 (liter/kg) to prepare a slurry, and (b) heating the slurry to cause a zeolite forming reaction. Water is continuously or intermittently removed by evaporation so that a decrease in a concentration of alkali which would otherwise naturally occur during the reaction is at least suppressed to thereby facilitate the reaction.
    Type: Application
    Filed: March 21, 2002
    Publication date: August 8, 2002
    Inventor: Yukuo Katayama
  • Patent number: 6423295
    Abstract: A low silica AFI zeolite and a high purity gmelinite zeolite that have a SiO2/Al2O3 ratio of about 10 or less are provided.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: July 23, 2002
    Assignee: Praxair Technology, Inc.
    Inventor: Qisheng Huo
  • Patent number: 6416732
    Abstract: Aluminosilicate zeolites are formed in a novel reaction medium which contains a silicate source and an aluminum source in an aqueous alkaline solution and which reaction medium further includes an additional electrolyte salt. The addition of the electrolyte salt provides nucleation sites for the zeolite so as to form very small crystals. In high silica reaction environments, it is possible to form high aluminum zeolites which contain occluded silicate and wherein the morphology of the zeolites comprise macroscopic aggregates of microcrystalline zeolites. The addition of the electrolyte salt can also decrease the reaction time or temperature needed for crystallization.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: July 9, 2002
    Assignee: Engelhard Corporation
    Inventors: Jacqueline S. Curran, Valerie A. Bell, Steven M. Kuznicki, Tadeusz W. Langner
  • Patent number: 6413492
    Abstract: The present invention relates to a method of forming an aluminosilicate zeolite having a Si/Al≦1.1. The method comprises forming a reaction mixture by mixing a source of silica, and a source of aluminum in an aqueous alkaline solution having a pH of at least 12.0, wherein the Si/Al of said mixture is greater than 1.0.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: July 2, 2002
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell
  • Patent number: 6379646
    Abstract: Molecular sieves comprising (1) phosphorus oxide; (2) a first oxide comprising an oxide of silicon, germanium or mixtures thereof; and (3) a second oxide comprising an oxide of aluminum, boron or mixtures thereof, said molecular sieve having a mole ratio of the first oxide to the second oxide of greater than 1, containing at least about 10 weight percent phosphorus oxide in the crystal framework, and having pores greater than 5 Å in diameter are useful as catalysts in hydrocarbon conversion reactions.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: April 30, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventor: Stephen J. Miller
  • Patent number: 6368571
    Abstract: The present invention relates in general to a method of making ZSM-5 zeolite. More specifically, the present invention relates to using plant waste material such as rice hull ash or any siliceous waste containing amorphous SiO2 as a source for SiO2 in making ZSM-5, thus producing a ZSM-5 that is lower cost than prior art methods. The method comprises providing siliceous ash having a carbon content between about 0 percent and 10 percent by weight of total rice hull ash, wherein the SiO2 content is greater than 90 percent by weight of total siliceous ash, and wherein the SiO2 and carbon are substantially amorphous. The synthesis of the ZSM-5 of the invention involves first suspending the siliceous ash in water. Next, a source of alumina is added to the suspension of siliceous ash. The source of alumina and siliceous ash are added such that the molar ratio of SiO2 to Al2O3 in the ZSM-5 is in the range from approximately 15 to 150, thus forming a second suspension.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: April 9, 2002
    Assignee: CHK Group, Inc.
    Inventor: Rajan K. Vempati
  • Patent number: 6350428
    Abstract: This invention relates to a process for producing zeolite-bound FAU structure type zeolite having excellent mechanical strength and containing reduced amounts of zeolite P and the use of the zeolite-bound FAU structure type zeolites produced by the process. The zeolite-bound FAU structure type zeolite is prepared by converting the silica of a silica-bound FAU structure type aggregate in an aqueous mixture containing an effective amount of crown ether, e.g., 15-crown-5 and 18-crown-6, to suppress the formation of zeolite P and sufficient hydroxy ions to cause the silica to be converted to the zeolite. The zeolite-bound FAU structure type zeolite finds particular application in adsorption processes and hydrocarbon conversion processes such as catalytic cracking, hydrocracking, and reforming.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: February 26, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Johannes Petrus Verduijn, by Jannetje Maatje van den Berge, Machteld Mertens