Using Aluminosilicate Catalyst Patents (Class 585/739)
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Patent number: 7357836Abstract: In certain aspects, the invention features methods for forming crystalline membranes (e.g., a membrane of a framework material, such as a zeolite) by inducing secondary growth in a layer of oriented seed crystals. The rate of growth of the seed crystals in the plane of the substrate is controlled to be comparable to the rate of growth out of the plane. As a result, a crystalline membrane can form a substantially continuous layer including grains of uniform crystallographic orientation that extend through the depth of the layer.Type: GrantFiled: March 5, 2004Date of Patent: April 15, 2008Assignee: University of MassachusettsInventors: Michael Tsapatsis, Zhiping Lai
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Patent number: 7252753Abstract: Dielectric fluids comprising oil fractions derived from highly paraffinic wax are provided. Further provided are processes for making these dielectric fluids comprising oil fractions derived from highly paraffinic wax. The dielectric fluids are useful as insulating and cooling mediums in new and existing power and distribution electrical apparatus, such as transformers, regulators, circuit breakers, switchgear, underground electrical cables, and attendant equipment.Type: GrantFiled: December 1, 2004Date of Patent: August 7, 2007Assignee: Chevron U.S.A. Inc.Inventors: John M. Rosenbaum, Nadine L. Yenni, Joseph M. Pudlak
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Patent number: 7166756Abstract: The present invention is directed at a process to isomerize C10+ hydrocarbon feedstreams by contacting a C10+ hydrocarbon feedstream with a steamed catalyst.Type: GrantFiled: November 25, 2003Date of Patent: January 23, 2007Assignee: Exxonmobil Research and Engineering CompanyInventors: Madhav Acharya, David L. Stern
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Patent number: 7151199Abstract: Hydrocarbon or oxygenate conversion process in which a feedstock is contacted with a non zeolitic molecular sieve which has been treated to remove most, if not all, of the halogen contained in the catalyst. The halogen may be removed by one of several methods. One method includes heating the catalyst in a low moisture environment, followed by contacting the heated catalyst with air and/or steam. Another method includes steam-treating the catalyst at a temperature from 400° C. to 1000° C. The hydrocarbon or oxygenate conversion processes include the conversion of oxygenates to olefins, the conversion of oxygenates and ammonia to alkylamines, the conversion of oxygenates and aromatic compounds to alkylated aromatic compounds, cracking and dewaxing.Type: GrantFiled: June 10, 2002Date of Patent: December 19, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Luc Roger Marc Martens, Stephen N. Vaughn, Albert Edward Schweizer, John K. Pierce, Shun Chong Fung
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Patent number: 7119042Abstract: Provided is a catalyst composition for the isomerization of n-paraffin which comprises a ?-zeolite having been synthesized according to a dry gel process and contains cerium, the ?-zeolite being characterized in that it has an average particle diameter of 0.01˜0.1 ?m and the proportion of the cerium in the ?-zeolite is within the range of 0.001˜0.2 in terms of the atomic ratio of the silicon atom in the ?-zeolite to the cerium atom, i.e. [Ce]/[Si] as well as a process for isomerizing n-paraffin which comprises bringing n-paraffin into contact with the catalyst composition as set forth above.Type: GrantFiled: March 10, 2004Date of Patent: October 10, 2006Assignee: Gifu UniversityInventors: Yoshihiro Sugi, Yoshihiro Kubota, Yoichi Nishimura, Puspa Ratu
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Patent number: 7115198Abstract: A novel crystalline aluminophosphate and metalloaluminophosphate of the molecular sieve type, denominated SSZ-51, is prepared by hydrothermal synthesis from reactive sources of aluminum and phosphorus, fluorine and an organic templating agent, 4-dimethylaminopyridine. SSZ-51 is useful in catalysts for, e.g., hydrocarbon conversion reactions.Type: GrantFiled: October 22, 2003Date of Patent: October 3, 2006Assignee: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Thomas V. Harris
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Patent number: 6930217Abstract: A catalytic material includes a microporous zeolite supported on a mesoporous inorganic oxide support. The microporous zeolite can include zeolite beta, zeolite Y or ZSM-5. The mesoporous inorganic oxide can be, e.g., silica or alumina, and can optionally include other metals. Methods for making and using the catalytic material are described herein.Type: GrantFiled: June 24, 2004Date of Patent: August 16, 2005Assignee: ABB Lummus Global Inc.Inventors: Zhiping Shan, Jacobus Cornelius Jansen, Chuen Y. Yeh, Johannes Hendrik Koegler, Thomas Maschmeyer
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Patent number: 6930219Abstract: A process for treating organic compounds includes providing a composition which includes a substantially mesoporous structure of silica containing at least 97% by volume of pores having a pore size ranging from about 15 ? to about 30 ? and having a micropore volume of at least about 0.01 cc/g, wherein the mesoporous structure has incorporated therewith at least about 0.02% by weight of at least one catalytically and/or chemically active heteroatom selected from the group consisting of Al, Ti, V, Cr, Zn, Fe, Sn, Mo, Ga, Ni, Co, In, Zr, Mn, Cu, Mg, Pd, Pt and W, and the catalyst has an X-ray diffraction pattern with one peak at 0.3° to about 3.5° at 2?. The catalyst is contacted with an organic feed under reaction conditions wherein the treating process is selected from alkylation, acylation, oligomerization, selective oxidation, hydrotreating, isomerization, demetalation, catalytic dewaxing, hydroxylation, hydrogenation, ammoximation, isomerization, dehydrogenation, cracking and adsorption.Type: GrantFiled: December 6, 2002Date of Patent: August 16, 2005Assignee: ABB Lummus Global Inc.Inventors: Zhiping Shan, Jacobus Cornelius Jansen, Chuen Y. Yeh, Philip J. Angevine, Thomas Maschmeyer, Mohamed S. Hamdy
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Publication number: 20040254415Abstract: The invention relates to a method of isomerising a charge comprising hydrocarbons containing between 5 and 8 carbon atoms per molecule. According to the invention, said charge is separated into at least two fractions: fraction A mostly comprising hydrocarbons containing 5 or 6 carbon atoms and fraction B mostly comprising hydrocarbons containing 7 or 8 carbon atoms. Subsequently, said fractions A and H are treated separately under specific conditions in different isomerisation reaction zones.Type: ApplicationFiled: August 9, 2004Publication date: December 16, 2004Inventors: Christophe Bouchy, Olivier Ducreux, Elsa Jolimaitre, Paul Broutin
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Patent number: 6827843Abstract: The present invention relates to new crystalline molecular sieve SSZ-63 prepared using N-cyclodecyl-N-methyl-pyrrolidinium cation as a structure-directing agent, methods for synthesizing SSZ-63 and processes employing SSZ-63 in a catalyst.Type: GrantFiled: December 26, 2002Date of Patent: December 7, 2004Assignee: Chevron U.S.A., Inc.Inventor: Saleh Elomari
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Patent number: 6808620Abstract: 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 processes employing SSZ-64 in a catalyst.Type: GrantFiled: August 1, 2002Date of Patent: October 26, 2004Assignee: Chevron U.S.A. Inc.Inventor: Saleh Elomari
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Publication number: 20040192979Abstract: The invention relates to a novel and completely synthetic microcrystalline paraffin, said paraffin being obtained in a simple manner and with a high yield by the catalytic hydromerisation of paraffin FT comprising 20 to 105 carbon atoms. Said paraffins can be pasty to solid at room temperature and have a higher percentage of iso-paraffins than n-paraffins. Since they do not contain aromatic compounds they are particularly suitable for use in the pharmaceutical, cosmetic and food industries.Type: ApplicationFiled: May 17, 2004Publication date: September 30, 2004Inventors: Michael Matthai, Gunter Hidebrand, Helmuth Schulze-Trautmann, Thorsten Butz
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Publication number: 20040188324Abstract: The present invention relates to new crystalline molecular sieve SSZ-65 prepared using 1-[1-(4-chlorophenyl)-cyclopropylmethyl]-1-ethyl-pyrrolidinium or 1-ethyl-1-(1-phenyl-cyclopropylmethyl)-pyrrolidinium cation as a structure-directing agent, methods for synthesizing SSZ-65 and processes employing SSZ-65 in a catalyst.Type: ApplicationFiled: March 26, 2003Publication date: September 30, 2004Inventor: Saleh Elomari
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Publication number: 20040186337Abstract: An aluminosilicate zeolite and substituted versions designated UZM-15 have been synthesized. These zeolites are prepared using an organo-ammonium cation as a template in which at least one organic group has at least 2 carbon atoms. An example of such a cation is diethyldimethyl-ammonium cation. The template can optionally comprise other organoammonium cations, alkali metals and alkaline earth metals. These UZM-15 materials can be dealuminated by various processes to provide UZM-15HS compositions. Both the UZM-15 and UZM-15HS compositions are useful as catalysts or catalyst supports in various process such as the conversion of cyclic hydrocarbons to non-cyclic hydrocarbons and olefin oligomerization.Type: ApplicationFiled: March 21, 2003Publication date: September 23, 2004Inventors: Lisa M. Rohde, Gregory J. Lewis, Stephen T. Wilson, Deng-Yang Jan, R. Lyle Patton, Susan C. Koster, Jaime G. Moscoso, Mark A. Miller, Michael G. Gatter
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Publication number: 20040182744Abstract: A family of crystalline aluminosilicate zeolites designated UZM-8HS and derived from UZM-8 have been synthesized. The aluminum content of the UZM-8HS is lower than that of the starting UZM-8 thus changing its ion exchange capacity and acidity.Type: ApplicationFiled: March 21, 2003Publication date: September 23, 2004Inventors: Deng Yang Jan, Jaime G. Moscoso, Susan G. Koster, Lisa M. Rohde, Gregory J. Lewis, Mark A. Miller, R. Lyle Patton, Stephen T. Wilson
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Publication number: 20040181110Abstract: A method for producing lubricant base oils is provided comprising the steps of: (a) separating a feedstock into a light lubricant base oil fraction and a heavy fraction; (b) hydroisomerizing the fractions over a medium pore size molecular sieve catalyst under hydroisomerization conditions to produce an isomerized light lubricant base oil fraction having a pour point less than or equal to a target pour point of the lubricant base oils and an isomerized heavy fraction having a pour point of equal to or greater than the target pour point of the lubricant base oils and a cloud point greater than the target cloud point of the lubricant base oils; and (c) dehazing the isomerized heavy fraction to provide a heavy lubricant base oil having a pour point less than or equal to the target pour point of the lubricant base oils and a cloud point less than or equal to the target cloud point of the lubricant base oils.Type: ApplicationFiled: March 10, 2003Publication date: September 16, 2004Inventors: Stephen J. Miller, John M. Rosenbaum
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Publication number: 20040181109Abstract: A method for producing lubricant base oils is provided comprising the steps of: (a) hydroisomerizing a feedstock over a medium pore size molecular sieve catalyst under hydroisomerization conditions to produce an isomerized product having a pour point of greater than a target pour point of the lubricant base oils; (b) separating the isomerized product into at least a light lubricant base oil having a pour point less than or equal to the target pour point of the lubricant base oils and a heavy fraction having a pour point of equal to or greater than the target pour point of the lubricant base oils and a cloud point greater than the target cloud point of the lubricant base oils; and (c) dehazing the heavy fraction to provide a heavy lubricant base oil having a pour point less than or equal to the target pour point of the lubricant base oils and a cloud point less than or equal to the target cloud point of the lubricant base oils.Type: ApplicationFiled: March 10, 2003Publication date: September 16, 2004Inventors: Stephen J. Miller, John M. Rosenbaum
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Publication number: 20040171902Abstract: The invention relates to a method of selectively producing adamantanes in a production apparatus made of an inexpensive material, not having any negative influence on the natural environment. The method for producing adamantanes includes isomerizing a tricyclic saturated hydrocarbon having at least 10 carbon atoms in the presence of a metal-carrying solid acid catalyst, wherein water and/or alcohol is made to coexist along with the catalyst during the isomerization.Type: ApplicationFiled: December 12, 2003Publication date: September 2, 2004Inventors: Akio Kojima, Masao Saito
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Publication number: 20040163998Abstract: A process for producing a high RON naphtha which comprises contacting a hydrocarbon feed stream comprising a mixture of the isomers of C5 and C6 paraffins with a CFI zeolite, such as CIT-5, in an adsorption zone, whereby the branched isomers of the C5 and C6 paraffins are preferentially adsorbed by the CFI zeolite as compared to the straight chain isomers, and recovering a naphtha product from the adsorption zone having a higher RON than the hydrocarbon feed stream, also including a hydroisomerization process and a hydrocracking process.Type: ApplicationFiled: February 25, 2003Publication date: August 26, 2004Inventors: Theo Maesen, Tom Harris
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Publication number: 20040162455Abstract: The present invention is directed at a process to isomerize C10+ hydrocarbon feedstreams by contacting a C10+ hydrocarbon feedstream with a steamed catalyst.Type: ApplicationFiled: November 25, 2003Publication date: August 19, 2004Applicant: ExxonMobil Research and Engineering CompanyInventors: Madhav Acharya, David L. Stern
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Publication number: 20040124123Abstract: The present invention relates to new crystalline molecular sieve SSZ-63 prepared using N-cyclodecyl-N-methyl-pyrrolidinium cation as a structure-directing agent, methods for synthesizing SSZ-63 and processes employing SSZ-63 in a catalyst.Type: ApplicationFiled: December 26, 2002Publication date: July 1, 2004Inventor: Saleh Elomari
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Publication number: 20040089587Abstract: The invention relates to a method for synthesizing a family of zeolite materials, grouped together under the name ITQ-16, in an OH− medium and in the absence of fluorides and to the catalytic applications thereof. The zeolite ITQ-16 family of materials is characterized by having different proportions of distinct polymorphs A, B and C described as possible intergrowths in the Beta zeolite and, therefore, the X-ray diffraction patterns of said family are different from that described for the Beta zeolite. In its calcinated form, zeolite ITQ-16 has the following empirical formula: x(MXO2):tTO2:gGeO2:(1−g)SiO2, wherein T is one or more elements having +4 oxidation status and different from Ge and Si; X is one or more elements having +3 oxidation status; and M can be H+ or one or more inorganic cations with a +n charge.Type: ApplicationFiled: August 1, 2003Publication date: May 13, 2004Inventors: Avelino Corma Canos, Teresa Navarro Villalba, Susana Valencia Valencia, Fernando Rey Garcia
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Patent number: 6733658Abstract: The invention concerns a process for improving the pour point of a feed comprising paraffins containing more than 10 carbon atoms, in which process the feed to be treated is brought into contact with a catalyst comprising an EU-1 zeolite and at least one hydro-dehydrogenating element, at a temperature which is in the range 170° C. to 500° C., a pressure in the range 1 to 250 bar and an hourly space velocity in the range 0.05 to 100 h−1, in the presence of hydrogen in a proportion of 50 to 2000 l/l of feed. The oils obtained have good pour points and high viscosity indices (VI). The process is also applicable to gas oils and other feeds requiring a reduction of pour point. The invention also concerns an EU-1 zeolite from which a portion of elements T (Al, Ga, Fe or B) have been removed and which has an Si/T atomic ratio of at least 10.Type: GrantFiled: June 24, 1998Date of Patent: May 11, 2004Assignee: Institut Francais du PetroleInventors: Eric Benazzi, Nathalie George-Marchal, Christophe Gueret, Patrick Briot, Alain Billon, Pierre Marion
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Patent number: 6723889Abstract: A process for producing a diesel fuel having at least 70% C10+ paraffins, wherein the iso-paraffin to normal paraffin mole ratio is 5:1 and higher. This diesel fuel is produced by from a feed containing at least 40% C10+ normal paraffins and at least 20% C26+ normal paraffins. It is produced by contacting that feed in an isomerization/cracking reaction zone a feed with a catalyst comprising a SAPO-11 and platinum in the presence of hydrogen (hydrogen:feed ratio of from 1,000 to 10,000 SCFB) at a temperature of from 340° C. to 420° C., a pressure of from 100 psig to 600 psig, and a liquid hourly space velocity of from 0.1 hr−1 to 1.0 hr−1.Type: GrantFiled: January 22, 2001Date of Patent: April 20, 2004Assignee: Chevron U.S.A. Inc.Inventors: Stephen J. Miller, Arthur John Dahlberg, Kamala R. Krishna, Russell R. Krug
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Patent number: 6702937Abstract: A process for producing low pour point diesel and lubricating base oil products by bulk dewaxing a C5 plus Fischer-Tropsch syncrude, hydrofinishing the dewaxed intermediate, and recovering 120 degrees C. plus products having improved properties.Type: GrantFiled: February 8, 2002Date of Patent: March 9, 2004Assignee: Chevron U.S.A. Inc.Inventors: David R. Johnson, Christopher A. Simmons, Donald H. Mohr, Stephen J. Miller, Stephen K. Lee
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Patent number: 6692723Abstract: The invention concerns a zeolite with structure type MTT comprising MTT zeolite crystals with a size of less than 5 &mgr;m, at least a portion of the MTT zeolite crystals being in the form of MTT zeolite crystal aggregates, said zeolite being characterized in that the granulometry of the aggregates is such that the dimension Dv,90 is in the range 40 nm to 100 &mgr;m. The invention also concerns the preparation of the zeolite and the use of the zeolite as a catalyst in a process for converting hydrocarbon feeds, and in particular in a process for isomerizing straight chain paraffins.Type: GrantFiled: February 21, 2001Date of Patent: February 17, 2004Assignee: Institut Francais du PetroleInventors: Loïc Rouleau, Frédéric Kolenda, Eric Benazzi
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Publication number: 20040020828Abstract: The present invention relates to a new crystalline zeolite SSZ-53 prepared by using phenylcycloalkylmethyl ammonium cations as structure directing agents.Type: ApplicationFiled: July 10, 2003Publication date: February 5, 2004Applicant: Chevron U.S.A. Inc.Inventor: Saleh Elomari
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Patent number: 6652735Abstract: A process for isomerization dewaxing of a hydrocarbon feed which includes contacting the hydrocarbon feed with a large pore size, small crystal size, crystalline molecular sieve and an intermediate pore size, small crystal size, crystalline molecular sieve to produce a dewaxed product with a reduced pour point and a reduced cloud point. In a preferred embodiment, the feed is contacted with the molecular sieves sequentially, first with the large pore sieve followed by the intermediate pore sieve.Type: GrantFiled: April 26, 2001Date of Patent: November 25, 2003Assignee: ExxonMobil Research and Engineering CompanyInventors: Thomas F. Degnan, Philip J. Angevine
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Patent number: 6620312Abstract: A method for producing a lube basestock from a waxy feed is disclosed in which a feed containing to 50 wt % or more of wax is hydrotreated and stripped to lower the nitrogen and sulfur content of the feed. The feed is then hydroisomerized under conditions to 370° C. hydrocatalytically dewaxed with a catalyst comprising a mixture of a catalytically active metal on a zeolite dewaxing catalyst and an amorphous catalyst, or alternatively is solvent dewaxed and then hydrocatalytically dewaxed with the just described catalyst.Type: GrantFiled: October 25, 2000Date of Patent: September 16, 2003Assignee: Exxon Research and Engineering CompanyInventors: William John Murphy, Ian Alfred Cody, Bernard George Silbernagel
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Patent number: 6616830Abstract: The present invention relates to a new crystalline zeolite SSZ-57 and processes employing SSZ-57 in a catalyst.Type: GrantFiled: July 13, 2001Date of Patent: September 9, 2003Assignee: Chevron U.S.A. Inc.Inventor: Saleh Elomari
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Patent number: 6573417Abstract: The fractional distillation performed as part of the isomerization of C5-C6 paraffins is heat integrated. A portion of a sidedraw recycle stream is employed to cool the feed to a deisohexanizer column and then returned to a lower portion of the column. This reduces the reflux demand of the column and the operating cost of the process.Type: GrantFiled: November 5, 2001Date of Patent: June 3, 2003Assignee: UOP LLCInventor: Lynn H. Rice
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Patent number: 6555090Abstract: 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: GrantFiled: July 6, 2001Date of Patent: April 29, 2003Assignees: Consejo Superior de Investigaciones Cientificas, Universidad Politecnica de ValenciaInventors: Antonio Chica Lara, Avelino Corma Canós, Vicente Fornés Segúi, Urbano Díaz Morales
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Patent number: 6548040Abstract: The present invention concerns a process for synthesising a zeolite with structure type MTT comprising at least one element X selected from silicon and germanium and at least one element T selected from aluminium, iron gallium, boron, titanium, vanadium, zirconium, molybdenum, arsenic, antimony, chromium and manganese, comprising reacting an aqueous mixture comprising at least one source of at least one element X, at least one source of at least one element T, and at least one precursor of an organic compound comprising at least one alkylated polymethylene &agr;-&ohgr; diammonium derivative, characterized in that at least one precursor is selected from monoamines. The present invention also concerns the use of the zeolite obtained as a catalyst in a process for converting hydrocarbon-containing feeds, as an adsorbent to control pollution and as a molecular sieve for separation.Type: GrantFiled: September 29, 2000Date of Patent: April 15, 2003Assignee: Institut Francais du PetroleInventors: Loïc Rouleau, Frédéric Kolenda, Eric Benazzi
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Patent number: 6547958Abstract: The present invention relates to new crystalline zeolite SSZ-59 and processes employing SSZ-59 as a catalyst.Type: GrantFiled: July 13, 2001Date of Patent: April 15, 2003Assignee: Chevron U.S.A. Inc.Inventor: Saleh Elomari
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Patent number: 6540905Abstract: The present invention relates to new crystalline zeolite SSZ-58 and processes employing SSZ-58 as a catalyst.Type: GrantFiled: July 13, 2001Date of Patent: April 1, 2003Assignee: Chevron U.S.A. Inc.Inventor: Saleh Elomari
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Patent number: 6540903Abstract: The present invention relates to new crystalline zeolite SSZ-47 prepared using a bicyclo ammonium cation templating agent.Type: GrantFiled: November 30, 2000Date of Patent: April 1, 2003Assignee: Chevron U.S.A. Inc.Inventors: Gregory S. Lee, Yumi Nakagawa, Stacey I. Zones
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Patent number: 6540906Abstract: The present invention relates to new crystalline zeolite SSZ-60 and processes employing SSZ-60 as a catalyst.Type: GrantFiled: July 13, 2001Date of Patent: April 1, 2003Assignee: Chevron U.S.A. Inc.Inventor: Saleh Elomari
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Patent number: 6524551Abstract: This invention provides a process for the synthesis of MCM-58 using 1-(1-adamantyl)pyridinium cations as a directing agent. The resultant MCM-58 is useful in a variety of hydrocarbon conversion reactions including toluene disproportionation, transalkylation of aromatics, reaction of paraffins with aromatics, paraffin isomerization and alkylation of aromatics with olefins.Type: GrantFiled: January 25, 2002Date of Patent: February 25, 2003Assignee: ExxonMobil Oil CorporationInventor: Sandeep S. Dhingra
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Patent number: 6469226Abstract: 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: GrantFiled: February 5, 2001Date of Patent: October 22, 2002Assignee: BP Oil International LimitedInventors: Antonio Chica Lara, Urbano Diaz Morales, Vicente Fornes Segui, Avelino Corma Canos
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Patent number: 6455474Abstract: Discloses environmentally friendly, low temperature base oils and drilling fluids. The drilling fluid is constituted of one or more of weighting agents, emulsifiers, wetting agents, viscosifiers, fluid loss control agents, proppants, and other particulates such as used in a gravel pack, emulsified with a paraffinic solvent composition which forms a continuous oil phase, or water-in-oil invert phase. The solvent composition is constituted of a mixture of C10-C24 n-paraffins and isoparaffins having an isoparaffin:n-paraffin molar ratio ranging from about 0.5:1 to about 9:1, the isoparaffins of the mixture contain greater than 30 percent, preferably from about 30 percent to about 50 percent, of mono-methyl species, and greater than 30 percent, preferably from about 30 percent to about 50 percent of multi-methyl branched species and isoparaffins which contain one or more branches of carbon number higher than methyl, based on the total weight of the isoparaffins in the mixture.Type: GrantFiled: April 7, 2000Date of Patent: September 24, 2002Assignee: ExxonMobil Research and Engineering CompanyInventors: Robert Jay Wittenbrink, Charles John Mart, Daniel Francis Ryan, Bruce Randall Cook
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Publication number: 20020111522Abstract: An improved zeolite having a high number of strong acid sites wherein said zeolite has an AAI of at least 1.0. In a preferred embodiment, such zeolite is produced by controlling conditions after production of the crystalline structure such that loss of tetrahedral aluminum is minimized to thereby provide a zeolite with the above defined AAI.Type: ApplicationFiled: October 17, 2001Publication date: August 15, 2002Inventors: Rudolf Overbeek, Nelleke van der Puil, Chuen Y. Yeh, Lawrence L. Murrell, Yun-Feng Chang, Philip Jay Angevine, Johannes Hendrik Koegler
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Patent number: 6399845Abstract: Process for isomerisation of a hydrocarbonaceous feedstock substantially boiling in the gasoline range which feedstock comprises linear paraffins having at least five carbon atoms wherein the feedstock is contacted in the presence of hydrogen at elevated temperature and pressure with a catalyst comprising in combination platinum (Pt) and palladium (Pd) each in metallic form supported on an acidic amorphous alumina or molecular sieve, and isomerised hydrocarbons preprared by the process.Type: GrantFiled: November 23, 1999Date of Patent: June 4, 2002Assignee: Fortum Oil & Gas OyInventors: Pirkko Raulo, Outi Piirainen, Juha-Pekka Aalto
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Publication number: 20020062055Abstract: A process for producing a middle distillate suitable for example as a diesel fuel, with improved low temperature properties and a low content of aromatic compounds, from a hydrocarbon feed as the starting material by contacting the feed material in a single reaction step, in the presence of hydrogen, and at an elevated temperature and pressure, with a bifunctional catalyst containing a hydrogenating metal component in addition to a molecular sieve and a carrier for the simultaneous removal of aromatics and isomerization of paraffins. The molecular sieve is preferably an aluminosilicate, or a silicoaluminophosphate, the catalyst comprising as the hydrogenating/dehydrogenating component a metal from the group VI or VIII of the periodic table of the elements.Type: ApplicationFiled: November 23, 1999Publication date: May 23, 2002Inventors: PIRKKO RAULO, OUTI PIIRAINEN, JUHA-PEKKA AALTO
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Patent number: 6383366Abstract: Waxy feeds are treated under hydroisomerization conditions to produce good yields of an isomerate product of high VI by using a silica-alumina based catalyst in which the silica-alumina has a pore volume less of 0.99 ml/gm (H2O), an alumina content in the range of 35 to 55 wt % and an isoelectric point in the range of 4.5 to 6.5. A lube fraction of the isomerate is dewaxed to provide a lube basestock of high VI. The silica-alumina may be modified with a rare earth oxide or yttria or boria or magnesia in which instance the modified catalyst has an isoelectric point greater than but no more than 2 points greater than base the silica-alumina.Type: GrantFiled: November 14, 2000Date of Patent: May 7, 2002Assignee: Exxon Research and Engineering CompanyInventors: Kenneth Lloyd Riley, William John Murphy, Ian Alfred Cody, Stuart Leon Soled, Gary Brice McVicker, Sabato Miseo
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Patent number: 6350370Abstract: The present invention relates to a process for improving the pour point of a feed including paraffins containing more than 10 carbon atoms. Desirably, the feed to be treated is brought into contact with a catalyst based on NU-85 zeolite, at least partially in its acid form, and at least one hydro-dehydrogenating element, at a temperature which is in the range 170° C. to 500° C., a pressure in the range 1 to 250 bar and at an hourly space velocity in the range 0.05 to 100 h−1, in the presence of hydrogen in a proportion of 50 to 2000 l/l of feed.Type: GrantFiled: August 9, 2000Date of Patent: February 26, 2002Assignee: Institut Francais du PetroleInventors: Eric Benazzi, Nathalie George-Marchal, Christophe Gueret, Patrick Briot, Alain Billon, Pierre Marion
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Patent number: 6310265Abstract: This invention relates to a process for isomerizing paraffins comprising the step of contacting a feed containing paraffins with a catalyst comprising a synthetic porous crystalline material, designated MCM-68, which 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: GrantFiled: November 1, 1999Date of Patent: October 30, 2001Assignee: ExxonMobil Chemical Patents Inc.Inventors: Arthur W. Chester, David C. Calabro, Sandeep S. Dhingra, Jean W. Beeckman, Timothy J. Fiebig, Glenn R. Sweeten, Terry E. Helton, Charles T. Kresge, Richard F. Socha, Simon C. Weston
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Publication number: 20010027935Abstract: The present invention relates to new crystalline zeolite SSZ-47 prepared using a bicyclo ammonium cation templating agent.Type: ApplicationFiled: November 30, 2000Publication date: October 11, 2001Inventors: Gregory S. Lee, Yumi Nakagawa, Stacey I. Zones
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Patent number: 6258991Abstract: Low temperature hydrothermal treatment of an LTL zeolite-producing mixture produces a colloidal suspension of the zeolite; the suspension may be used as seeds in Al- and Ga-LTL zeolite manufacture.Type: GrantFiled: January 12, 2000Date of Patent: July 10, 2001Assignee: ExxonMobil Chemical Patents Inc.Inventors: Johannes Petrus Verduijn, Machteld M Mertens, Marc H Anthonis
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Publication number: 20010006155Abstract: A process for producing a diesel fuel having at least 70% C10+paraffins, wherein the iso-paraffin to normal paraffin mole ratio is 5:1 and higher. This diesel fuel is produced by from a feed containing at least 40% C10+normal paraffins and at least 20% C26+normal paraffins. It is produced by contacting that feed in an isomerization/cracking reaction zone a feed with a catalyst comprising a SAPO-11 and platinum in the presence of hydrogen (hydrogen:feed ratio of from 1,000 to 10,000 SCFB) at a temperature of from 340° C. to 420° C., a pressure of from 100 psig to 600 psig, and a liquid hourly space velocity of from 0.1 hr−1 to 1.0 hr−1.Type: ApplicationFiled: January 22, 2001Publication date: July 5, 2001Inventors: Stephen J. Miller, Arthur John Dahlberg, Kamala R. Krishna, Russell R. Krug
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Patent number: 6235960Abstract: A process for improving the pour point of a feed comprising paraffins containing more than 10 carbon atoms, in which the feed to be treated is brought into contact with a catalyst comprising at least one zeolite with structure type MTT, TON or FER or any possible combination of these three, at least one hydro-dehydrogenating element selected from elements from group VIB and group VIII of the periodic table, at least one deposited promoter element (boron, silicon, phosphorous), optionally at least one group VIIA element, optionally at least one group VIIB element, at a temperature in the range 170° C. to 500° C., a pressure in the range 1 to 250 bars and at an hourly space velocity in the range 0.05 to 100 h−1, in the presence of hydrogen in an amount of 50 to 2000 l/l of feed. The oils obtained have good pour points and high viscosity indices (VI). The process is also applicable to gas oils, and other feeds requiring a reduction in pour point.Type: GrantFiled: May 12, 1999Date of Patent: May 22, 2001Assignee: Institut Francais du PetroleInventors: Eric Benazzi, Slavik Kasztelan, Nathalie George-Marchal