Using Aluminosilicate Catalyst Patents (Class 585/666)
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Patent number: 5990368Abstract: Providing an isomerization process which can isomerize allenes to alkynes less expensively and stably is an assignment to be solved by the present invention and given thereto. The present invention is an isomerization process including the step of reacting an allene-lype hydrocarbon compound (R.sub.1 R.sub.2 C.dbd.C.dbd.CR.sub.3 R.sub.4) in the presence of alkaline-earth metal hydride working as an isomerization catalyst, thereby isomerizing the allene-type hydrocarbon compound to an alkyne-type hydrocarbon compound (R.sub.1 C.ident.C--CR.sub.2 R.sub.3 R.sub.4).Type: GrantFiled: July 7, 1998Date of Patent: November 23, 1999Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Mitsuru Nakano, Bruce M. Novak
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Patent number: 5969205Abstract: C.sub.4 -C.sub.6 -alkenes having an internal double bond can be produced by hydroisomerization of C.sub.4 -C.sub.6 -alkenes having a terminal double bond in the presence of H.sub.2 on a catalyst having a content of a noble metal of group VIII of the Periodic Table of the Elements (Mendeleev), if C.sub.4 -C.sub.6 -alkenes having a terminal double bond are fed into a hydroisomerization reactor after preheating, as such or in a mixture with other hydrocarbons, and the reaction product is divided into a work-up stream and a recycle stream. The recycle stream is recycled to the inlet of the hydroisomerization reactor and is used there as feed together with the C.sub.4 -C.sub.6 -alkenes having a terminal double bond or with the hydrocarbon stream comprising the C.sub.4 -C.sub.6 -alkenes having a terminal double bond and with the H.sub.2.Type: GrantFiled: August 21, 1998Date of Patent: October 19, 1999Assignee: EC Erdolchemie GmbHInventors: Arnd Stuwe, Jorg-Uwe Michel, Matthias Baum, Franz Kaledat
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Patent number: 5965783Abstract: A process for producing a synthetic hydrocarbon product is provided comprising contacting under isomerization conditions an olefin feed comprising linear olefins with a catalyst comprising an intermediate pore size molecular sieve, wherein the catalyst is substantially free of Group VIII metals. The synthetic hydrocarbon product exhibits a low pour point and low toxicity to marine life.Type: GrantFiled: December 3, 1996Date of Patent: October 12, 1999Assignee: Chevron Chemical CompanyInventors: Jeffrey C. Gee, Roger C. Williamson, Christophe J. Lawrie, Stephen J. Miller
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Patent number: 5958370Abstract: The present invention relates to new crystalline zeolite SSZ-39 prepared using a cyclic or polycyclic quaternary ammonium cation templating agent.Type: GrantFiled: December 11, 1997Date of Patent: September 28, 1999Assignee: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Yumi Nakagawa, Susan T. Evans, Gregory S. Lee
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Patent number: 5948946Abstract: Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using a sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity. Isomerization of terminal olefins is possible with such porous microcomposites.Type: GrantFiled: July 23, 1998Date of Patent: September 7, 1999Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark Andrew Harmer, Qun Sun
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Patent number: 5948948Abstract: The invention concerns a process for isomerising a feed containing essentially hydrocarbons, preferably paraffins preferably containing 5 and/or 6 carbon atoms per molecule, in which said feed is treated in a distillation zone comprising an exhausting zone and a rectification zone associated with an isomerisation reaction zone, in the presence of an isomerisation catalyst and a gas stream containing hydrogen, characterized in that the reaction zone is at least partially internal to the distillation zone, and wherein the hydrogen-containing gas is fed by a dedicated gas distributor to the bottom of at least one catalytic bed within the isomerization reaction zone.Type: GrantFiled: February 4, 1997Date of Patent: September 7, 1999Assignee: Institut Francais du PetroleInventors: Etienne Lebas, Sophie Jullian, Christine Travers, Pierre Capron, Jean-Fran.cedilla.ois Joly, Michel Thery
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Patent number: 5910299Abstract: A porous, crystalline material, designated ERS-10 zeolite, having in its calcined and anhydrous form a molecular composition of oxides corresponding to the formula (I):mM.sub.2/n O.zX.sub.2 O.sub.3.YO.sub.2 (1)wherein m, n, M, z, X and Y are as defined herein, the crystalline material having an X-ray diffraction spectrum shown in Table 1 herein.Type: GrantFiled: March 5, 1997Date of Patent: June 8, 1999Assignee: Eniricerche S.p.A.Inventors: Luciano Carluccio, Roberto Millini, Giuseppe Bellussi
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Patent number: 5898090Abstract: This invention is drawn to a process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene using a silicoaluminophosphate molecular sieve which is enriched in framework silicon at the surface, resulting in a greater yield of para-xylene compared to prior-art processes.Type: GrantFiled: December 17, 1997Date of Patent: April 27, 1999Assignee: UOP LLCInventors: John Ivor Hammerman, Edith Marie Flanigen, Gregory J. Gajda, Jennifer S. Holmgren, David A. Lesch, Robert Lyle Patton, Thomas Matthew Reynolds, Cara Moy Roeseler
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Patent number: 5877379Abstract: A composition and an olefin conversion process are disclosed. The composition comprises a zeolite having incorporated therein a coke-suppressing amount of a coke suppressor selected from the group consisting of silicon oxides, phosphorus oxides, boron oxides, magnesium oxides, tin oxides, titanium oxides, zirconium oxides, molybdenum oxides, germanium oxides, indium oxides, lanthanum oxides, cesium oxides, and combinations of any two or more thereof. The olefin conversion process comprises contacting a first olefin with a catalyst composition under a condition effective to convert said first olefin to a second olefin wherein the catalyst composition is the same as the composition disclosed above. Also disclosed is a process for producing the composition.Type: GrantFiled: August 19, 1996Date of Patent: March 2, 1999Assignee: Phillips Petroleum CompanyInventors: An-hsiang Wu, Charles A. Drake
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Patent number: 5846400Abstract: The present invention relates to new crystalline zeolite SSZ-42 prepared by processes for preparing crystalline molecular sieves, particularly large pore zeolites, using an organic templating agent selected from the group consisting of N-benzyl-1,4-diazabicyclo?2.2.2!octane cations and N-benzyl-1-azabicyclo?2.2.2!octane cations.Type: GrantFiled: April 8, 1997Date of Patent: December 8, 1998Assignee: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Andrew Rainis
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Patent number: 5789646Abstract: Medium-chain olefins containing as impurities 2-alkyl substituted isomers having a close boiling point are purified by (i) passing over a solid acid catalyst under mild conditions to selectively double-bond isomerise said impurities, and (ii) separating said isomerised olefins by distillation.Type: GrantFiled: November 20, 1996Date of Patent: August 4, 1998Assignee: Fina Research S.A.Inventors: Eric Romera, Christian Lamotte, Philippe Bodart
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Patent number: 5688975Abstract: Molecular sieve compositions have been synthesized which are resistant to the loss of framework atoms. Specifically, the molecular sieves of the invention have the empirical formulamA: (M.sub.w Al.sub.x Si.sub.y)O.sub.2where A is at least one rare earth metal, M is chromium or titanium and "m", "w", "x" and "y" are the mole fractions of A, M, Al and Si respectively. Applicants have discovered that the rare earth metals prevent loss of chromium and titanium from the framework and degradation of the molecular sieve. Along with the composition, a process for preparing the composition and processes using the composition are disclosed and claimed.Type: GrantFiled: April 10, 1996Date of Patent: November 18, 1997Assignee: UOPInventors: Vinayan Nair, Deng-Yang Jan, Robert Lyle Patton, Ben A. Wilson, Donald F. Best
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Patent number: 5656149Abstract: The present invention relates to new crystalline zeolite SSZ-41 which comprises oxides of (1) silicon or a mixture of silicon and germanium, and (2) zinc, said zinc being present in an amount from about 2 wt % to about 5 wt % of zinc metal based on the total weight of metals in said zeolite. Zeolite SSZ-41 may also optionally contain oxides of aluminum, iron, gallium or mixtures thereof. Zeolite SSZ-41 has the X-ray diffraction lines of Table I and has an argon adsorption capacity of at least about 0.06 cc/gm at 87.degree. K. Also disclosed are methods of making and using zeolite SSZ-41.Type: GrantFiled: May 21, 1996Date of Patent: August 12, 1997Assignee: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Donald S. Santilli
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Patent number: 5648584Abstract: An active and stable catalyst for isomerizing linear olefins to methyl branched isoolefins is provided by (a) mixing (i) a zeolite powder containing at least one zeolite with at least one one-dimensional pore structure having pore size small enough to retard by-product dimerization and coke formation and large enough to permit entry of the linear olefin and allow formation of the methyl branched isoolefin, (ii) an alumina-containing binder, (iii) water, (iv) at least one acid selected from monocarboxylic acids and inorganic acids and (v) at least one polycarboxylic acid; (b) forming a pellet of the mixture; and (c) calcining the pellet. The resulting catalyst has superior selectivity, higher maximum product concentration in the product stream and longer run length for isomerizing linear olefins to their corresponding isoolefins.Type: GrantFiled: January 4, 1996Date of Patent: July 15, 1997Assignee: Shell Oil CompanyInventor: Brendan Dermot Murray
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Patent number: 5510306Abstract: An active and stable catalyst for isomerizing linear olefins to methyl branched isoolefins is provided by (a) mixing (i) a zeolite powder containing at least one zeolite with at least one one-dimensional pore structure having pore size small enough to retard by-product dimerization and coke formation and large enough to permit entry of the linear olefin and allow formation of the methyl branched isoolefin, (ii) an alumina-containing binder, (iii) water, (iv) at least one acid selected from monocarboxylic acids and inorganic acids and (v) at least one polycarboxylic acid; (b) forming a pellet of the mixture; and (c) calcining the pellet. The resulting catalyst has superior selectivity, higher maximum product concentration in the product stream and longer run length for isomerizing linear olefins to their corresponding isoolefins.Type: GrantFiled: December 29, 1993Date of Patent: April 23, 1996Assignee: Shell Oil CompanyInventor: Brendan D. Murray
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Patent number: 5434328Abstract: This invention relates to a process for restructuring an olefinic feedstock rich in linear olefins into a product olefin of narrower composition which is richer in branched olefins than the starting feedstock. Such restructuring is achieved by contacting the feedstock with an unmodified or partially modified tectometallosilicate of the Theta-1 type at relatively low temperatures. The product olefins are valuable as petrochemical feedstock for producing polyolefins, alcohols, ethers and other oxygenates, surfactants, alkyl aromatics and oligomers useful as gasoline blending components.Type: GrantFiled: April 30, 1987Date of Patent: July 18, 1995Assignee: The British Petroleum Company p.l.c.Inventors: Sami A. I. Barri, Rabaab Tahir, David W. Walker
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Patent number: 5371311Abstract: Forms of zeolite Omega synthesized by hydrothermal crystallization from reaction systems containing alkali metal cations and organic templating agents, modified by calcination in air, ion-exchange, steam calcination and treatment with a low-pH aqueous ammonium ion solution, are significantly improved with respect to surface area, catalytic activity and adsorption capacities for large molecular species.The zeolite compositions of the invention may be used in a variety of hydrocarbon conversion reactions.Type: GrantFiled: July 27, 1993Date of Patent: December 6, 1994Assignee: UOPInventors: Vinayan Nair, Donald F. Best, Gregory J. Gajda
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Patent number: 5328675Abstract: This invention relates to novel zeolitic compositions having zinc as well as aluminum and silicon in the framework tetrahedral positions. The composition has a structure similar to type-L aluminosilicate zeolites. The invention also involves a process of preparation in which one or more divalent transition metals is directly synthesized into the product metalo-aluminosilicate.Type: GrantFiled: February 1, 1993Date of Patent: July 12, 1994Assignee: Exxon Research & Engineering Co.Inventors: David E. W. Vaughan, Karl G. Strohmaier
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Patent number: 5324878Abstract: Disclosed is a process for carrying out the selective dimerization of isobutene in order to produce alpha- and beta-di-isobutene dimer.sub.3, according to which process an isobutene stream is brought into contact, under dimerization conditions, with a solid silica gel/alumina catalyst which is amorphous when analyzed by X-ray diffraction, displays a molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 comprised within the range of from 30:1 to 500:1, has a surface-area comprised within the range of from 500 to 1000 m.sup.2 /g, a porosity of from 0.3 to 0.6 ml/g and an average pore diameter of approximately 10 .ANG. (.ANG.ngstrom), and is free from pores with a larger diameter than 30 .ANG..Type: GrantFiled: October 2, 1992Date of Patent: June 28, 1994Assignees: Eniricerche S.p.A., Euron S.p.A.Inventors: Maurizio Brunelli, Walter Castelvetro, Carlo Perego, Stefano Peratello
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Patent number: 5304695Abstract: A method is disclosed for the double bond isomerization of alpha olefin-containing feeds, e.g., conversion of 1-butene-containing hydrocarbon streams to 2-butene-rich product streams, wherein oligomer by-products are minimized. The process uses a catalyst composition comprising a zeolite whose surface has been at least partially deactivated for acid catalyzed reactions by treatment with an aluminum chelating agent, e.g., oxalic acid, which possesses an average cross section diameter greater than that of the zeolite pores.Type: GrantFiled: February 22, 1993Date of Patent: April 19, 1994Assignee: Mobil Oil CorporationInventors: Werner O. Haag, Jose G. Santiesteban
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Patent number: 5292980Abstract: Basic intermediate or large pore zeolites having a Constraint Index less than 12 are useful as catalysts in the dehydrogenation-aromatization of cyclic dienes, in the isomerization of olefins and in the aldol condensation, and particularly in the cyclization of acetonylacetone to 3-methyl-2-cyclopenten-1-one.Type: GrantFiled: April 18, 1991Date of Patent: March 8, 1994Assignee: Mobil Oil CorporationInventor: Ralph M. Dessau
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Patent number: 5237120Abstract: A method is disclosed for the double bond isomerization of alpha olefin-containing feeds, e.g., conversion of 1-butene-containing hydrocarbon streams to 2-butene-rich product streams, wherein oligomer by-products are minimized. The process uses a catalyst composition comprising a zeolite whose surface has been at least partially deactivated for acid catalyzed reactions by chemisorption of a surface-deactivating agent, e.g., collidine, which possesses an average cross section diameter greater than that of the zeolite pores.Type: GrantFiled: December 27, 1991Date of Patent: August 17, 1993Assignee: Mobil Oil CorporationInventors: Werner O. Haag, Roland H. Heck, Jose G. Santiesteban, David S. Shihabi
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Patent number: 5230790Abstract: Hydrocarbon conversion reactions are carried out over a catalyst composition containing forms of zeolite Omega synthesized by hydrothermal crystallization from reaction systems containing alkali metal cations and organic templating agents which have been modified by calcination in air, ion-exchange, steam calcination and treatment with a low-pH aqueous ammonium ion solution.Type: GrantFiled: May 18, 1992Date of Patent: July 27, 1993Assignee: UOPInventors: Vinayan Nair, Donald F. Best
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Patent number: 5215648Abstract: Hydrocarbon conversion processes using a crystalline zeolite SSZ-31.Type: GrantFiled: January 3, 1992Date of Patent: June 1, 1993Assignee: Chevron Research and Technology CompanyInventors: Stacey I. Zones, Thomas V. Harris, Andrew Rainis, Donald S. Santilli
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Patent number: 5177281Abstract: A method for isomerizing a 1-olefin-containing organic feedstock having an average carbon number of about 4 to 5, e.g., 1-butene, to convert 1-olefin to 2-olefin at temperatures less than 200.degree. C., with a double bond isomerization catalyst comprising a zeolite sorbing 30 to 55 mg n-hexane at 90.degree. C., 83 torr, and 15 to 40 mg 3-methylpentane at 90.degree. C., 90 torr, per g dry zeolite in the hydrogen form, e.g., ZSM-22, ZSM-23, or ZSM-35. Catalyst aging is minimal despite operation at low temperatures and high pressures.Type: GrantFiled: December 27, 1991Date of Patent: January 5, 1993Assignee: Mobil Oil CorporationInventors: Werner O. Haag, Jose G. Santiesteban
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Patent number: 5157178Abstract: An improved process combination is disclosed for the production of an oxygenated gasoline component from an FCC gasoline feed. Olefins in the cracked gasoline are isomerized using a medium-pore molecular-sieve catalyst to achieve high yields of C.sub.5 + isomerized gasoline and avoid conversion of highly branched paraffins to equilibrium values. The isomerized gasoline is etherified to obtain oxygenated gasoline.Type: GrantFiled: May 20, 1991Date of Patent: October 20, 1992Assignee: UOPInventors: Gregory J. Gajda, Jule A. Rabo
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Patent number: 5146029Abstract: Light olefins are converted to isoalkene-rich hydrocarbon products, e.g., isobutene and isoamylenes with zeolite MCM-22 catalyst.Type: GrantFiled: September 10, 1990Date of Patent: September 8, 1992Assignee: Mobil Oil CorporationInventors: Robert G. Bundens, Kathleen M. Keville, Albin Huss, Jr., Cynthia T-W Chu, Altaf Husain
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Patent number: 5120896Abstract: This invention relates to a process for the concurrent isomerization and disproportionation of hydrocarbon olefins by contacting said hydrocarbon at disproportionation conditions with a catalyst comprising an inorganic oxide matrix, a ferrierite compound, and a heavy metal selected from the group consisting of molybdenum, tungsten, rhenium and mixtures thereof.Type: GrantFiled: December 21, 1989Date of Patent: June 9, 1992Assignee: Shell Oil CompanyInventors: Richard A. Kemp, David M. Hamilton, Jr.
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Patent number: 5107050Abstract: The present invention relates to the improved skeletal isomerization of olefins over molecular sieve catalysts, the improvement comprising carrying out the skeletal isomerization at a temperature above 900.degree. F.Type: GrantFiled: December 28, 1990Date of Patent: April 21, 1992Assignee: Arco Chemical Technology, L.P.Inventors: Anne M. Gaffney, C. Andrew Jones
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Patent number: 5107047Abstract: The invention is a catalytic process for isomerizing an olefin under catalytic isomerization conditions, in the presence of an olefin isomerization catalyst comprising MCM-22. The light olefins are linear and/or branched olefins containing greater than three carbon atoms. The olefins can be contained in a fraction having a boiling range of from C.sub.5 + to 390.degree. F.Type: GrantFiled: January 28, 1991Date of Patent: April 21, 1992Assignee: Mobil Oil CorporationInventors: Kenneth J. Del Rossi, Albin Huss, Jr.
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Patent number: 5087793Abstract: Inner olefines are prepared by using 1-olefines having 6 to 34 carbon atoms as a starting material and isomerizing them at temperatures ranging from 130.degree. to 270.degree. C. in the presence of mordenite type zeolites. Optionally, unreacted 1-olefines can be separated and reused as a starting material.Type: GrantFiled: May 24, 1990Date of Patent: February 11, 1992Inventors: Naoki Akiyama, Masaharu Mori
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Patent number: 5043520Abstract: This invention relates to a process for the concurrent isomerization and disproportionation of hydrocarbon olefins by contacting said hydrocarbon at disporportionation conditions with a catalyst comprising a physical mixture of a disproportionation catalyst comprising a heavy metal selected from the group consisting of molybdenum, tungsten, rhenium and mixtures thereof, deposited on an inorganic oxide support and a double bond isomerization catalyst comprising an acidic zeolite capable of effecting double bond isomerization.Type: GrantFiled: December 21, 1989Date of Patent: August 27, 1991Assignee: Shell Oil CompanyInventor: David M. Hamilton, Jr.
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Patent number: 5043524Abstract: This process selectively isomerizes the double-bonds of linear olefins without isomerizing the double-bonds of branched olefins. The process is carried out by contacting a mixture of linear olefins and branched olefins at a temperature ranging from about -10.degree. C. to about 250.degree. C. with a zeolite having an alkali metal deposited thereon.Type: GrantFiled: July 27, 1990Date of Patent: August 27, 1991Assignee: Shell Oil CompanyInventor: Robert C. Ryan
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Patent number: 5007997Abstract: A crystalline zeolite SSZ-26 is prepared using a hexamethyl [4.3.3.0] propellane-8,11-diammonium cation as a template. Also disclosed is a process for converting hydrocarbons with crystalline zeolite SSZ-26.Type: GrantFiled: December 20, 1989Date of Patent: April 16, 1991Assignee: Chevron Research CompanyInventors: Stacy I. Zones, Donald S. Santilli, James Ziemer, Dennis L. Holtermann, Theresa A. Pecoraro, Robert A. Innes
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Patent number: 4996386Abstract: This invention relates to a process for the concurrent isomerization and disproportionation of hydrocarbon olefins by contacting said hydrocarbon at disproportionation conditions with a catalyst prepared by incorporating a ferrierite compound and a metals solution containing cobalt and an element selected from the group consisting of molybdenum and tungsten into an alumina hydrogel.Type: GrantFiled: December 21, 1989Date of Patent: February 26, 1991Assignee: Shell Oil CompanyInventors: David M. Hamilton, Jr., Richard A. Kemp
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Patent number: 4992613Abstract: This invention relates to a process for the double bond isomerization of an olefin which comprises contacting said olefin with a catalyst comprising zeolite and an alkali(ne earth) metal compound wherein the sum of the amount of the alkali(ne earth) metal in the compound plus any metal cation exchanged into the zeolite is in excess of that required to provide a fully metal cation-exchanged zeolite.Type: GrantFiled: August 16, 1989Date of Patent: February 12, 1991Assignee: Shell Oil CompanyInventor: Thomas F. Brownscombe
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Patent number: 4973785Abstract: Crystalline molecular sieves having three-dimensional microporous framework structures of ELO.sub.2, AlO.sub.2, SiO.sub.2 and PO.sub.2 framework oxide units are disclosed. The molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (EL.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (EL.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2 ; "EL" represents at least one element capable of forming a framework oxide unit; and "w", "x", "y" and "z" represent the mole fractions of element(s) "EL", aluminum, phosphorus and silicon, respectively, present as framework oxides. Their use as adsorbents, catalysts, etc. is also disclosed.Type: GrantFiled: April 18, 1988Date of Patent: November 27, 1990Assignee: UOPInventors: Brent M. T. Lok, Bonita K. Marcus, Lawrence D. Vail, Edith M. Flanigen, Robert L. Patton, Stephen T. Wilson
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Patent number: 4882038Abstract: Crystalline molecular sieves having a three-dimensional microporous framework structures of MgO.sub.2, AlO.sub.2, SiO.sub.2 and PO.sub.2 tetrahedral units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (Mg.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (Mg.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2 ; and "w", "x", "y" and "z" represent the mole fractions of magnesium, aluminum, phosphorus and silicon, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is disclosed.Type: GrantFiled: February 16, 1988Date of Patent: November 21, 1989Assignee: UOPInventors: Brent M. T. Lok, Lawrence D. Vail, Edith M. Flanigen
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Patent number: 4874504Abstract: A method is disclosed which provides improved control over the noble-metal exchange of zeolite catalyst by using bulky organic bases to control pH during the metal loading step.Type: GrantFiled: March 20, 1989Date of Patent: October 17, 1989Assignee: Mobil Oil CorporationInventors: Roland von Ballmoos, Francis X. Ryan
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Patent number: 4869805Abstract: Titanium-aluminum-silicon-oxide molecular sieves are disclosed having use as molecular sieves and as catalyst compositions in hydrocarbon conversion and other processes. The molecular sieves have a unit empirical formula on an anhydrous basis ofmR: (Ti.sub.x Al.sub.y Si.sub.z)O.sub.2wherein "R" represents at least one organic+emplating agent; "m" represents the moles of "R" present per mole of (Ti.sub.x Al.sub.y Si.sub.z)O.sub.2 ; and "x", "y" and "z" represent the mole fractions of titanium, aluminum and silicon, respectively, present as tetrahedral oxides.Type: GrantFiled: July 22, 1988Date of Patent: September 26, 1989Assignee: UOPInventors: Brent M. T. Lok, Bonita K. Marcus, Edith M. Flanigen
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Patent number: 4840928Abstract: Lower alkanes are converted to olefins in a `third bed` external catalyst cooler (ECC) in which hot catalyst, from the regenerator (`second bed`) operating in conjunction with a fluid catalytic cracker (`first bed`), thermally cracks and dehydrogenates the alkanes. Because this is an endothermic reaction, the catalyst is autogeneously cooled before it is recirculated to the FCC regenerator. The cracking catalyst is the catalyst of choice in the FCC reactor. The most evident benefit of using the ECC is that it eliminates internal regenerator coils for steam regeneration. Among several additional benefits is that the ECC allows flexibility in design of its fluid `third bed` for optimum weight hourly space velocity (WHSV), and control of the dehydrogenation temperature so as to get maximum conversion of alkanes. This conversion can be maintained because the FCC regenerator burns the coke made during alkane dehydrogenation.Type: GrantFiled: January 19, 1988Date of Patent: June 20, 1989Assignee: Mobil Oil CorporationInventors: Mohsen N. Harandi, Hartley Owen
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Patent number: 4814542Abstract: A process for olefin bond isomerization by means of a gamma alumina-based catalyst containing SiO.sub.2 and oxides of a metal chosen from those of Group II A and/or VIII and/or III B and/or Lanthanides, with particular molar ratios between the various oxides. The catalyst is thermally stable, and in the conversion of butene-2 to butene-1 enables butene-1 to be obtained with an isobutene content below the allowable limits for butene-1 grade polymerization.Type: GrantFiled: July 26, 1988Date of Patent: March 21, 1989Assignee: Snamprogetti, S.p.A.Inventors: Orfeo Forlani, Francesco Ancillotti, Bruno Notari
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Patent number: 4777322Abstract: But-2-enes are obtained from C.sub.4 -hydrocarbon mixtures which contain but-1-ene and may or may not contain but-2-enes by catalytic isomerization of the but-1-ene to but-2-enes in an isomerization zone at elevated temperatures by a process in which the isomerization is carried out in combination with a distillative separation zone, the said hydrocarbon mixture being fed to the isomerization zone and/or distillative separation zone, the isomerization mixture obtained from the isomerization zone is passed into the distillative separation zone, a but-1-ene-containing fraction is removed above the lower third of the distillative separation zone and passed into the isomerization zone, and the but-2-enes or a fraction containing these are or is removed in the lower third of the distillative separation zone.Type: GrantFiled: July 26, 1985Date of Patent: October 11, 1988Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Alfred Lindner, Wolf D. Mross, Max Strohmeyer, Klaus Volkamer
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Patent number: 4753720Abstract: Olefin containing gasolines are upgraded to improve octane number with less than 5 wt.% yield loss by contacting such gasolines at elevated temperatures with acidic zeolites having alpha values between 5 and 100.Type: GrantFiled: April 16, 1987Date of Patent: June 28, 1988Assignee: Mobil Oil CorporationInventor: Roger A. Morrison
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Patent number: 4749819Abstract: The disclosed invention concerns a unique process for the isomerization of a double bond for movement of same from the alpha position to an interior position in an olefinic hydrocarbon molecule. This non-skeletal isomerization process is conducted in the presence of a select aluminosilicate having 8 and 10 member ring channels of a specific and certain size sufficient to permit said double bond isomerization but restrictive to prevent aromatization or alkylation of the double bond olefin molecule within the channels of the aluminosilicate. The instant double bond isomerization process is an key link in the preparation of higher olefins from ethylene utilizing oligomerization, isomerization and disproportionation as chemical mechanisms to convert C.sub.2 olefins, in a maximum quantity, to C.sub.12 to C.sub.18 higher alpha olefins.Type: GrantFiled: March 27, 1987Date of Patent: June 7, 1988Assignee: Shell Oil CompanyInventor: David M. Hamilton, Jr.
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Patent number: 4727203Abstract: The disclosure of the invention concerns a unique process for the isomerization of a double bond for movement of the same from the alpha position to an internal position of the olefinic molecule. The catalyst utilized for this migration is an 8 and 10 member ring aluminosilicate or tectosilicate having the surface treated with a silane compound.Type: GrantFiled: April 13, 1987Date of Patent: February 23, 1988Assignee: Shell Oil CompanyInventor: David M. Hamilton, Jr.
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Patent number: 4697040Abstract: A process for isomerization of vinylidene olefins at least in part to tri-substituted ethylene compound which process comprises contacting an olefinic feedstock, containing mostly vinyl olefins and minor amounts of vinylidene olefins, with a catalyst comprising LZ-Y52 zeolite so as to isomerize the vinylidene olefins to the tri-substituted ethylene compounds without losing substantial amounts of the vinyl olefins to side products. A process is preferably applied to a feedstock such as octene-1 containing 2-ethyl-hexane-1 and the 2-ethyl-hexene-1 is isomerized to 3-methyl-heptene-2 and 3-methyl-heptene-3 while retaining all or most all of the octene-1.Type: GrantFiled: January 8, 1987Date of Patent: September 29, 1987Assignee: Chevron Research CompanyInventors: Roger C. Williamson, James J. Harrison
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Patent number: 4650917Abstract: The viscosity index of synthetic lubricant stocks such as those produced by olefin oligomerization is increased by contacting such stocks with a solid acidic isomerization catalyst such as boron trifluoride at elevated temperatures, say above about 200.degree. C. The high viscosity index fractions of the resulting product may be sorbed by a shape-selective zeolite such as ZSM-5 and recovered to produce a high VI lubricant.Type: GrantFiled: August 19, 1985Date of Patent: March 17, 1987Assignee: Mobil Oil CorporationInventors: Ralph M. Dessau, David H. Olson
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Patent number: 4620053Abstract: A double bond isomerization catalyst is provided which consists essentially of zinc aluminate. A process for the double bond isomerization of olefinic feedstocks using this catalyst is also disclosed.Type: GrantFiled: June 17, 1985Date of Patent: October 28, 1986Assignee: Phillips Petroleum CompanyInventor: M. Bruce Welch
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Patent number: 4587375Abstract: A process for the isomerization of n-butenes, comprising contacting, at elevated temperatures, a feed containing n-butenes with a catalyst comprising a crystalline silica polymorph of the silicalite type in the presence of stream to recover a steam containing isobutene. The reaction can be carried out in either liquid or vapor phase.Type: GrantFiled: April 3, 1985Date of Patent: May 6, 1986Assignee: Labofina, S.A.Inventors: Guy L. G. Debras, Georges E. M. J. De Clippeleir, Raymond M. Cahen