And Silicon Containing Patents (Class 502/214)
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Patent number: 4710485Abstract: An isomerization catalyst which is useful for lowering the normal paraffin content of a hydrocarbon oil feedstock is described. The catalyst comprises an intermediate pore size silicoaluminophosphate molecular sieve and at least one Group VIII metal wherein the metal is occluded in the moleular sieve.Type: GrantFiled: October 2, 1985Date of Patent: December 1, 1987Assignee: Chevron Research CompanyInventor: Stephen J. Miller
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Patent number: 4705768Abstract: A new composition of matter comprises nickel phosphate and titanium phosphate, prepared by coprecipitation. A process for removing metals from a hydrocarbon-containing feed stream, in particular a heavy oil, comprises hydrotreatment in the presence of a solid catalyst composition comprising coprecipitated nickel phosphate and titanium phosphate.Type: GrantFiled: January 20, 1987Date of Patent: November 10, 1987Assignee: Phillips Petroleum CompanyInventors: Daniel M. Coombs, Ted H. Cymbaluk, Brent J. Bertus, Simon G. Kukes
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Patent number: 4686092Abstract: Crystalline molecular sieves having three-dimensional microporous framework structures of MnO.sub.2, AlO.sub.2, SiO.sub.2 and PO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR:(Mn.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 (Mn.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 manganese, aluminum, phosphorus and silicon, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.Type: GrantFiled: April 13, 1984Date of Patent: August 11, 1987Assignee: Union Carbide CorporationInventors: Brent M. T. Lok, Bonita K. Marcus, Edith M. Flanigen
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Patent number: 4684617Abstract: Crystalline molecular sieves having three-dimensional microporous framework structures of TiO.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:(Ti.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 (Ti.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 titanium, aluminum, phosphorus and silicon, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.Type: GrantFiled: April 13, 1984Date of Patent: August 4, 1987Assignee: Union Carbide CorporationInventors: Brent M. T. Lok, Bonita K. Marcus, Edith M. Flanigen
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Patent number: 4683217Abstract: A novel class of iron-aluminum-phosphorus-silicon-oxide molecular sieves is disclosed which contain as framework constituents FeO.sub.2.sup.-, and/or FeO.sub.2.sup.-2, AlO.sub.2.sup.-, PO.sub.2.sup.+ and SiO.sub.2 tetrahedral oxide units. These compositions are prepared hydrothermally, preferably using organic templating agents and are suitably employed as adsorbents and catalysts.Type: GrantFiled: April 13, 1984Date of Patent: July 28, 1987Assignee: Union Carbide CorporationInventors: Brent M. Lok, Lawrence D. Vail, Edith M. Flanigen
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Patent number: 4683050Abstract: Mild hydrocracking is accomplished with a catalyst containing an intermediate pore molecular sieve, such as silicalite or a ZSM-5 type zeolite.Type: GrantFiled: August 22, 1985Date of Patent: July 28, 1987Assignee: Union Oil Company of CaliforniaInventor: John W. Ward
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Patent number: 4681864Abstract: Catalytic cracking catalyst compositions having a high degree of activity and selectivity for the production of high octane gasoline fractions which comprise stabilized crystalline molecular sieve SAPO-37 dispersed in an inorganic oxide matrix. The crystalline structure and activity of the SAPO-37 molecular sieve component is preserved by including a stabilizing amount of the organic template compound used in the manufacture of the molecular sieve within the pore structure thereof until such time as the catalyst is thermally activated during use.Type: GrantFiled: July 15, 1985Date of Patent: July 21, 1987Assignee: W. R. Grace & Co.Inventors: Grant C. Edwards, Jean-Pierre Gilson, Carl V. McDaniel
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Patent number: 4673559Abstract: Silicophosphoaluminates are crystallized from a two-phase reaction mixture comprising sources of silicon oxide, aluminum oxide and phosphorus oxide and a suitable directing agent. The silicophosphoaluminates produced have ion exchange properties and are readily convertible to catalytically active material.Type: GrantFiled: December 21, 1984Date of Patent: June 16, 1987Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Roland von Ballmoos
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Patent number: 4666874Abstract: A stereo-differentiating catalyst containing metal is prepared by contacting a metal-containing acidic molecular sieve material, such as a zeolite with an optically active base, such as amine. Methods are disclosed for utilizing the catalyst in hydrocarbon conversion processes, e.g., hydrogenation and hydroformylation.Type: GrantFiled: October 29, 1985Date of Patent: May 19, 1987Assignee: Mobil Oil CorporationInventor: Ralph M. Dessau
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Patent number: 4666875Abstract: Cracking catalysts containing silicoaluminophosphate molecular sieves are disclosed. Such catalysts are derived from specific silicoaluminophosphate molecular sieves of U.S. Pat. No. 4,440,871. The catalyst when used for the conversion of hydrocarbons provide product mixtures different from those obtained by use of aluminosilicates based catalysts.Type: GrantFiled: May 9, 1986Date of Patent: May 19, 1987Assignee: Union Carbide CorporationInventors: Regis J. Pellet, Peter K. Coughlin, Mark T. Staniulis, Gary N. Long, Jule A. Rabo
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Patent number: 4665110Abstract: Molecular sieves, particularly zeolites, are prepared using adamantane compounds as templates.Type: GrantFiled: January 29, 1986Date of Patent: May 12, 1987Assignee: Chevron Research CompanyInventor: Stacey I. Zones
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Patent number: 4664897Abstract: A new crystalline silicophosphoaluminate designated MCM-4 and having a particular crystal strcuture is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.Type: GrantFiled: September 16, 1986Date of Patent: May 12, 1987Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Roland von Ballmoos
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Patent number: 4650783Abstract: This invention relates to a molecular sieve comprising silicalite in a phosphorus modified alumina matrix, the precursor of the molecular sieve comprising silicalite powder dispersed in an alumina hydrosol commingled with a phosphorus containing compound, the phosphorus to aluminum molar ratio in the molecular sieve being from 1:1 to 1:100.Type: GrantFiled: December 20, 1985Date of Patent: March 17, 1987Assignee: UOP Inc.Inventors: Tai-Hsiang Chao, Michael T. Cleary
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Patent number: 4647442Abstract: An improved method of synthesis for a composition comprising crystalline silicophosphoaluminate (MCM-2) is provided. The composition has ion-exchange properties and is readily convertible to catalytically active material. The synthesis method requires two liquid phases comprising a suitable organic or inorganic directing agent and specific reactants, including a specific aluminum phosphate of the ALPO-5 structure.Type: GrantFiled: August 21, 1984Date of Patent: March 3, 1987Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Roland von Ballmoos
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Patent number: 4639358Abstract: A new crystalline silicophosphoaluminate designated MCM-1 and having a particular crystal structure is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.Type: GrantFiled: December 21, 1984Date of Patent: January 27, 1987Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Roland von Ballmoos
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Patent number: 4639357Abstract: A new crystalline silicophosphoaluminate designated MCM-5 and having a particular crystal structure is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.Type: GrantFiled: December 21, 1984Date of Patent: January 27, 1987Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Roland von Ballmoos
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Patent number: 4636483Abstract: Superior tolerance to catalyst coking is obtained with a catalytic composite comprising a gallium component and a crystalline aluminosilicate incorporated with a phorphorus containing alumina. A five-fold reduction in the coke content of the spent catalyst of the instant invention is observed which is directly attributable to the phosphorus containing alumina. A novel method of preparing this catalyst is presented, along with a novel process for the dehydrocyclodimerization of C.sub.2 -C.sub.5 aliphatic hydrocarbons.Type: GrantFiled: December 9, 1985Date of Patent: January 13, 1987Assignee: UOP Inc.Inventors: Solveg S. Kjell, Tai-Hsiang Chao, Nancy J. Flint, Arthur A. Foutsitzis
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Patent number: 4632916Abstract: An improved vanadium/phosphorus catalyst for the oxidation of n-butane to maleic anhydride is disclosed. Preferably, the catalyst contains a promoter. A process for the oxidation of n-butane to maleic anhydride using the improved catalyst is also disclosed.Type: GrantFiled: July 15, 1985Date of Patent: December 30, 1986Assignee: E. I. Du Pont de Nemours and CompanyInventor: Tom A. Bither, Jr.
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Patent number: 4632811Abstract: A new crystalline silicophosphoaluminate designated MCM-3 and having a particular crystal structure is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.Type: GrantFiled: December 21, 1984Date of Patent: December 30, 1986Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Roland von Ballmoos
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Patent number: 4631264Abstract: Catalyst and process are disclosed for preparation of alpha, beta-unsaturated acids. Catalyst comprises a silica component and a Group IA alkali metal component which is present in an amount of from 200 to 15,000 parts per million, said silica component containing less than about 500 parts per million individually of aluminum, zirconium, titanium, iron and mixtures thereof. Process comprises reacting formaldehyde and a carboxylic acid of the formula RCH.sub.2 COOH wherein R is a member of the class consisting of -H, -alkyl, -aryl, -aralkyl, -cycloalkyl, and -alkylaryl radicals in the presence of said catalyst. Catalyst activity is maintained during process by addition of source of alkali metal component.Type: GrantFiled: October 7, 1985Date of Patent: December 23, 1986Assignee: Standard Oil Company (Indiana)Inventor: Gary P. Hagen
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Patent number: 4629717Abstract: A novel phosphorus-modified alumina composite comprising a hydrogel having a molar ratio on an elemental basis of phosphorus to aluminum of from 1:1 to 1:100 together with a surface area of about 140 to 450 m.sup.2 /gm is defined. The composite is prepared by admixing an alumina hydrosol with a phosphorus-containing compound to form a phosphorus-modified sol and gelling said admixture. The phosphorus-modified alumina composite is useful as a catalyst support for various catalytic reactions.Type: GrantFiled: June 11, 1985Date of Patent: December 16, 1986Assignee: UOP Inc.Inventor: Tai-Hsiang Chao
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Patent number: 4623527Abstract: A new crystalline silicophosphoaluminate molecular sieve designated MCM-10 and having a particular crystal structure is provided. This crystalline material has ion-exchange properties and is readily convertible to catalytically active material.Type: GrantFiled: December 21, 1984Date of Patent: November 18, 1986Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Ernest W. Valyocsik, Roland von Ballmoos
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Patent number: 4623636Abstract: A process for producing a thermally shock calcined crystalline silica comprising (A) precalcining a crystalline silica at a relatively low temperature, (B) very rapidly increasing the temperature of the crystalline silica to a relatively high temperature for a short period of time, and (C) rapidly cooling the crystalline silica. The resulting crystalline silica is catalytically active for hydrocarbon conversion reactions and is particularly selective for the production of para-xylene from a reaction mix of toluene and a methylating agent.Type: GrantFiled: October 8, 1985Date of Patent: November 18, 1986Assignee: Union Oil Company of CaliforniaInventor: Dean A. Young
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Patent number: 4622310Abstract: The invention is directed to inorganic phosphate aerogels and the method of preparing such inorganic phosphate aerogels which are characterized by high surface areas and high pore volume. The preparation comprises reacting an inorganic alkoxide or metal salt with a phosphate to form a gelled or colloidal material which is further treated with a fluid at or above its critical temperature and pressure to extract the solvent which is then dried to remove surface water.Type: GrantFiled: December 24, 1984Date of Patent: November 11, 1986Assignee: Stauffer Chemical CompanyInventor: Paul A. Iacobucci
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Patent number: 4619818Abstract: A new composition comprising crystalline antimonophosphoaluminate, designated MCM-14, and the novel method for its synthesis are provided. The composition has ion-exchange properties and is readily convertible to catalytically active material. The synthesis method requires two liquid phases comprising a suitable organic or inorganic directing agent and specific reactants.Type: GrantFiled: April 1, 1985Date of Patent: October 28, 1986Assignee: Mobil Oil CorporationInventors: Eric G. Derouane, Roland von Ballmoos
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Patent number: 4619908Abstract: The invention is directed to inorganic oxide-containing aerogels and the method of preparing such oxide-containing aerogels which are characterized by high surface areas and high pore volume. The preparation comprises dissolving the inorganic alkoxide or metal salt in a solvent optionally containing a catalytic amount of an acid or base and hydrolyzing the metal compound which is then further treated with a fluid at or above its critical temperature and pressure to extract the solvent.Type: GrantFiled: December 24, 1984Date of Patent: October 28, 1986Assignee: Stauffer Chemical CompanyInventors: Chung-Ping Cheng, Paul A. Iacobucci, Edward N. Walsh
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Patent number: 4617283Abstract: The addition of an inert metal component, such as gold, silver or copper, to a Fischer-Tropsch catalyst comprising cobalt enables said catalyst to convert synthesis gas to liquid motor fuels at about 240.degree.-370.degree. C. with advantageously reduced selectivity of said cobalt for methane in said conversion. The catalyst composition can advantageously include a support component, such as a molecular sieve, co-catalyst/support component or a combination of such support components.Type: GrantFiled: June 27, 1984Date of Patent: October 14, 1986Assignee: Union Carbide CorporationInventor: Peter K. Coughlin
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Patent number: 4605637Abstract: There is provided a process for activating a zeolite with an aluminum phosphate material. The process comprises hydrothermally treating an intimate mixture of the zeolite and an effective amount of aluminum phosphate activating agent in contact with an aqueous liquid phase under reaction conditions to increase the cracking activity of the mixture. Examples of zeolites which may be activated include low acidity zeolites such as boron-containing ZSM-5, boron-containing zeolite Beta and high silica ZSM-5. The aluminum phosphate may be in the form of a microporous, crystalline framework material such as AlPO.sub.4 -5.Type: GrantFiled: January 22, 1985Date of Patent: August 12, 1986Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Joseph N. Miale
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Patent number: 4604371Abstract: An oxidation catalyst of large surface area for converting C.sub.4 to C.sub.10 hydrocarbons to maleic anhydride comprises the oxides of vanadium, phosphorus and, optionally and preferably, tin, in combination with a microporous crystalline silica or a crystalline zeolite having a silica-to-alumina ratio of at least 6.0.Type: GrantFiled: October 31, 1984Date of Patent: August 5, 1986Assignee: Union Oil Company of CaliforniaInventor: Eric L. Moorehead
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Patent number: 4590173Abstract: A process for producing an antimony-containing oxide catalyst supported on silica for use in a fluidized bed reaction is described, by the steps of preparing a slurry containing an antimony compound, a polyvalent metal compound, and silica sol as the essential ingredients, heat treating the slurry at a pH of 7 or less and at a temperature of 40.degree. C. or higher, and thereafter spray-drying the slurry and calcining the dried particles, wherein said silica sol has a multi-peak particle size distribution profile that is derived by using a mixture of silica sol A in an amount corresponding to form 10 to 90 wt % of the total silica in the catalyst and silica sol B in an amount corresponding to 90 to 10 wt % of the total silica in the catalyst, with silica sols A and B having different average particle sizes, provided that the relations 3<da<100 and 0.1<da/db<0.9 are satisfied by da (m.mu.), the average particle size of silica sol A, and db (m.mu.), the average particle size of silica sol B.Type: GrantFiled: February 7, 1985Date of Patent: May 20, 1986Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yutaka Sasaki, Toshio Nakamura, Hiroshi Utsumi, Hiroshi Murata, Yoshimi Nakamura
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Patent number: 4584091Abstract: A catalyst is provided which comprises a crystalline zeolite, discrete particles of phosphorus-containing alumina dispersed in a non-zeolitic inorganic oxide matrix. A catalytic cracking process utilizing the catalyst is also provided.Type: GrantFiled: December 31, 1984Date of Patent: April 22, 1986Assignee: Exxon Research and Engineering Co.Inventor: Lloyd A. Pine
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Patent number: 4578371Abstract: The invention provides a process for the manufacture of a crystalline, phosphorus-containing zeolite of the ZSM-5 type by mixing water, a silicon dioxide source, an alkali metal hydroxide and an aluminum compound, and reacting this mixture at a temperature of from 95.degree. to 230.degree. C. until the zeolite has crystallized, which comprises carrying out the reaction without addition of an organic compound but in the presence of aluminum phosphate. The zeolite obtained has the following molar ratios:SiO.sub.2 :Al.sub.2 O.sub.3 from 15 to 200,M.sub.2 O:SiO.sub.2 from 10.sup.-6 to 1 andH.sub.2 O:SiO.sub.2 from 0 to 40(M being an alkali metal). It is free from organic compounds and contains phosphate in a molar ratio of P.sub.2 O.sub.5 :SiO.sub.2 of from 10.sup.-5 to 0.1. X-ray diffraction patterns are indicated.Type: GrantFiled: July 16, 1984Date of Patent: March 25, 1986Assignee: Hoechst AktiengesellschaftInventors: Hans-Peter Rieck, Hans-Jurgen Kalz
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Patent number: 4576805Abstract: A method for increasing the total amount of lattice metal in the framework of a particular porous inorganic crystalline composition, its conversion to hydrogen or hydronium form and use thereof as a catalyst component having enhanced catalytic activity is provided.Type: GrantFiled: May 10, 1983Date of Patent: March 18, 1986Assignee: Mobil Oil CorporationInventors: Clarence D. Chang, Joseph N. Miale
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Patent number: 4569833Abstract: Described herein is a process for enhancing the hydrophobicity of crystalline molecular sieves and also crystalline molecular sieve compositions which have enhanced hydrophobic character and modified catalytic properties. The crystalline molecular sieves are contacted with a silicon tetrafluoride gas mixture at a temperature from about ambient to about 200.degree. C. to alter (1) the framework aluminum and silica content, (2) the surface characteristics, and (3) the acidic sites of the molecular sieves with resulting modification of both the adsorptive properties, i.e., enhanced hydrophobicity, and catalytic properties of the molecular sieves. The crystalline molecular sieves can further undergo ion exchange to remove any aluminum fluoride cation species such as AlF.sup.++ and AlF.sub.2.sup.+. The crystalline molecular sieve compositions of this invention are useful as selective hydrophobic adsorbents and catalysts.Type: GrantFiled: April 24, 1985Date of Patent: February 11, 1986Assignee: Union Carbide CorporationInventors: Frank P. Gortsema, Brent M. Lok
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Patent number: 4567159Abstract: Olefins are converted into other olefins having different numbers of carbon atoms by contact with a catalyst comprising an inorganic refractory material containing at least one of tungsten oxide and molybdenum oxide and a promoting amount of at least one treating agent selected from chlorinated silicon compounds, thionyl chloride, and sulfuryl chloride under conditions suitable for the treating agent to promote the activity of tungsten and molybdenum oxides for the disproportionation reaction.Type: GrantFiled: September 11, 1984Date of Patent: January 28, 1986Assignee: Phillips Petroleum CompanyInventors: Robert L. Banks, Simon G. Kukes
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Patent number: 4567152Abstract: A catalyst is provided which comprises a crystalline zeolite, discrete particles of phosphorus-containing alumina dispersed in a non-zeolitic inorganic oxide matrix. A catalytic cracking process utilizing the catalyst is also provided.Type: GrantFiled: December 13, 1984Date of Patent: January 28, 1986Assignee: Exxon Research and Engineering Co.Inventor: Lloyd A. Pine
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Patent number: 4565802Abstract: Para-xylene is selectively prepared by reacting toluene and a methylating agent in the presence of a phosphorus modified catalyst comprising a silica polymorph intermixed with an inorganic refractory oxide, said catalyst having an alkali content of less than about 1.3 milliequivalents per gram as available alkali.Type: GrantFiled: December 5, 1983Date of Patent: January 21, 1986Assignee: Union Oil Company of CaliforniaInventor: Dean A. Young
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Patent number: 4564603Abstract: Oxidative dehydrogenation catalysts suitable for converting C.sub.4 to C.sub.8 mono-olefins to conjugated dienes comprise vanadium, phosphorus, and alkali metal components, and preferably also a tin component, in combination with a microporous crystalline silica or a crystalline zeolite having a silica-to-alumina ratio of at least 6.0. In one embodiment, the catalyst has a surface area between 30 M.sup.2 /g to 450 M.sup.2 /g and the vanadium has an average valence in the range of from 3.50 to 4.95.Type: GrantFiled: October 31, 1984Date of Patent: January 14, 1986Assignee: Union Oil Company of CaliforniaInventors: Paul R. Robinson, Eric L. Moorehead
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Patent number: 4556645Abstract: Synthesis gas comprising carbon monoxide and hydrogen is converted to C.sub.5.sup.+ hydrocarbons suitable for use as liquid motor fuels by contact with a dual catalyst system capable of enhancing the selectivity of said conversion to motor fuel range hydrocarbons and the quality of the resulting motor fuel product. The catalyst composition employs a Fischer-Tropsch catalyst, together with a co-catalyst/support component comprising SAPO silicoaluminophosphate, non-zeolitic molecular sieve catalyst.Type: GrantFiled: June 27, 1984Date of Patent: December 3, 1985Assignee: Union Carbide CorporationInventors: Peter K. Coughlin, Jule A. Rabo
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Patent number: 4524143Abstract: This invention is directed to thermally activated pelletted catalyst compositions comprising zirconium silicate having phosphorous deposited thereon and their use in the production of predominantly linear polyethylenepolyamines from ethylenediamine and monoethanolamine.Type: GrantFiled: January 3, 1983Date of Patent: June 18, 1985Assignee: Texaco Inc.Inventor: Steven H. Vanderpool
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Patent number: 4520127Abstract: An oxidation catalyst composition produced by comprising mixing at least one crystalline composite oxide, as the first component, selected from the group consisting of (i) a crystalline composite oxide containing vanadium and phosphorus and showing the characteristic X-ray diffraction peaks as identified in the following Table A and (ii) a crystalline composite oxide containing vanadium and phosphorus and showing the characteristic X-ray diffraction peaks as identified in the following Table B, an aqueous solution, as the second component, containing vanadium and phosphorus, and silica sol, as the third component, to form an aqueous slurry, spray-drying the slurry, and calcining the solid particles thereby obtained:TABLE A ______________________________________ X-ray diffraction peaks (Anticathode: Cu--K.sub..alpha.) 2.theta. (.+-.0.2.degree.) ______________________________________ 15.7.degree. 19.6.degree. 24.2.degree. 27.1.degree. 28.8.degree. 30.4.degree.Type: GrantFiled: March 21, 1984Date of Patent: May 28, 1985Assignee: Mitsubishi Chemical Industries Ltd.Inventors: Masayuki Otake, Masayoshi Murayama, Yuji Kawaragi
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Patent number: 4518703Abstract: Para-xylene is selectively prepared by reacting toluene and a methylating agent in the presence of a phosphorus modified catalyst comprising a silica polymorph intermixed with an inorganic refractory oxide, said catalyst having an alkali content of less than about 1.3 milliequivalents per gram as available alkali.Type: GrantFiled: December 6, 1982Date of Patent: May 21, 1985Assignee: Union Oil Company of CaliforniaInventor: Dean A. Young
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Patent number: 4481304Abstract: A catalyst comprising a catalytically active material composed of 1 to 20 parts by weight as V.sub.2 O.sub.5 of vanadium oxide, 99 to 80 parts by weight of anatase-type titanium oxide being porous and having a particle diameter substantially of 0.4 to 0.7 micron and a specific surface area of 10 to 60 m.sup.2 /g, and per 100 parts by weight of the sum of said two components, 0.01 to 1 part by weight as Nb.sub.2 O.sub.5 of niobium oxide, 0.05 to 1.2 parts by weight as an oxide of at least one ingredient selected from the group consisting of potassium, cesium, rubidium and thallium, and 0.2 to 1.2 parts by weight as P.sub.2 O.sub.5 of phosphorus, and a porous carrier having an alumina content of not more than 10% by weight, a silicon carbide content of at least 80% by weight and an apparent porosity of at least 10% supporting said catalytically active material thereon, wherein the total volume of pores having a diameter of 0.15 to 0.Type: GrantFiled: August 29, 1983Date of Patent: November 6, 1984Assignee: Nippon Shokubai Kagaku Kogyo Co. Ltd.Inventors: Takahisa Sato, Yoshiyuki Nakanishi, Keizo Maruyama, Takehiko Suzuki
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Patent number: 4473705Abstract: A process for producing an oxalate diester is provided. The oxalate diester is produced by reacting an aliphatic alcohol, carbon monoxide and molecular oxygen at an elevated temperature and under pressure in the presence of a catalyst comprising (1) metallic palladium or a palladium compound, (2) a heteropoly-acid and (3) at least one nitrogen compound selected from the group consisting of nitric acid, nitrogen oxides and esters of nitrous acid.Type: GrantFiled: December 21, 1982Date of Patent: September 25, 1984Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Hiroshi Miyamori, Tadashi Simomura, Mituo Miura, Katsushige Hayashi
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Patent number: 4472527Abstract: A process for preparing an oxidation catalyst composition comprises mixing at least one crystalline composite oxide, as the first component, selected from the group consisting of (i) a crystalline composite oxide containing vanadium and phosphorus and showing the characteristic X-ray diffraction peaks as identified in the following Table A and (ii) a crystalline composite oxide containing vanadium and phosphorus and showing the characteristic X-ray diffraction peaks as identified in the following Table B, an aqueous solution, as the second component, containing vanadium and phosphorus, and silica sol, as the third component, to form an aqueous slurry, spray-drying the slurry, and calcining the solid particles thereby obtained:TABLE A ______________________________________ X-ray diffraction peaks (Anticathode: Cu--K.sub..alpha.) 2.theta. (.+-.0.2.degree.) ______________________________________ 15.7.degree. 19.6.degree. 24.2.degree. 27.1.degree. 28.8.degree. 30.4.degree.Type: GrantFiled: March 8, 1983Date of Patent: September 18, 1984Assignee: Mitsubishi Chemical Industries Ltd.Inventors: Masayuki Otake, Masayoshi Murayama, Yuji Kawaragi
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Patent number: 4456780Abstract: There is disclosed a method for decreasing catalyst coking and extending the usable catalyst life by pre-treatment of the catalyst with steam and/or a phosphorus-containing compound. Catalysts benefiting from such pre-treatment comprise crystalline zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index, as herein defined, within the approximate range of 1 to 12.Type: GrantFiled: July 20, 1983Date of Patent: June 26, 1984Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4454241Abstract: A phosphorus-containing low alkali metal content zeolitic catalyst made from a clay starting material is provided. The catalyst is obtained by contacting a partially cation exchanged calcined zeolite-containing catalyst with a dihydrogen phosphate anion or a dihydrogen phosphite anion. A hydrocarbon catalytic cracking process utilizing the phosphorus-containing catalyst is also provided.Type: GrantFiled: May 24, 1982Date of Patent: June 12, 1984Assignee: Exxon Research and Engineering Co.Inventors: Lloyd A. Pine, Neville L. Cull
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Patent number: 4452907Abstract: Crystalline aluminosilicates having a silica to alumina molar ratio greater than 12 are produced by mixing a source of silica, a source of alumina, a source of alkali metal, water and a source of ammonium ions, e.g. ammonia or an ammonium salt, in the absence of an alcohol or alkylene oxide, in the molar proportions (expressed in the case of the silica and alumina sources in terms of the equivalent moles of the oxide, in the case of the alkali metal source in terms of the equivalent moles of the hydroxide (MOH) and in the case of the source of ammonium ions in terms of free ammonia):SiO.sub.2 : Al.sub.2 O.sub.3 greater than 12:1MOH: Al.sub.2 O.sub.3 in the range from 1:1 to 20:1SiO.sub.2 : NH.sub.3 in the range from 1:1 to 200:1H.sub.2 O: MOH in the range from 30:1 to 300:1and maintaining the composition at elevated temperature, such as 120.degree. to 210.degree. C. for a period such that crystallization occurs, typically greater than 4 hours.Type: GrantFiled: December 28, 1982Date of Patent: June 5, 1984Assignee: The British Petroleum Company LimitedInventors: William J. Ball, David G. Stewart
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Patent number: 4442226Abstract: Improved vanadium/phosphorus oxide catalyst for the vapor phase oxidation of n-butane to maleic anhydride, and the use of said catalyst to prepare maleic anhydride, said catalyst containing the nonpost-deposited promoter comprising silicon and at least one of indium, antimony and tantalum.Type: GrantFiled: September 22, 1982Date of Patent: April 10, 1984Assignee: E. I. Du Pont de Nemours and CompanyInventor: Tom A. Bither, Jr.
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Patent number: 4440871Abstract: A novel class of crystalline microporous silicoaluminophosphates is synthesized by hydrothermal crystallization of silicoaluminophosphate gels containing a molecular structure-forming templating agent. The class comprises a number of distinct species, each with a unique crystal structure. The compositions exhibit properties somewhat analogous to zeolitic molecular sieves which render them useful as adsorbent or catalysts in chemical reactions such as hydrocarbon conversions.Type: GrantFiled: July 26, 1982Date of Patent: April 3, 1984Assignee: Union Carbide CorporationInventors: Brent M. Lok, Celeste A. Messina, Robert L. Patton, Richard T. Gajek, Thomas R. Cannan, Edith M. Flanigen