Of Group Iii Or Lanthanide Group (i.e., Sc, Y, Al, Ga, In, Tl, Or Atomic Number 57 To 71 Inclusive) Patents (Class 502/263)
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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: 4677095Abstract: A method for stabilizing alumina supports for metal catalysts by impregnating the support with an aqueous dispersion of a high molecular weight, water dispersible polyorganosiloxane and calcining.Type: GrantFiled: January 31, 1985Date of Patent: June 30, 1987Assignee: Engelhard CorporationInventors: Chung-Zong Wan, Joseph C. Dettling
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Patent number: 4668654Abstract: A process for preparing primarily gamma-butyrolactone comprises the step of contacting under suitable reaction conditions a succinic anhydride containing feed stream and hydrogen, in the presence of a catalyst composition comprising (a) substantially metallic nickel, (b) at least one oxide selected from oxides of cerium and zirconium, and (c) a silica-containing support. In another embodiment, the above described catalyst composition is provided.Type: GrantFiled: July 11, 1986Date of Patent: May 26, 1987Assignee: Phillips Petroleum CompanyInventor: Charles A. Drake
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Patent number: 4668773Abstract: The reaction of the organolanthanide complexes [.eta..sup.5 --(CH.sub.3).sub.5 C.sub.5 ].sub.2 MCl.sub.2.sup.- Li((C.sub.2 H.sub.5).sub.2 O).sub.2.sup.+, M=La, Nd, Sm, Lu, with LiCH[Si(CH.sub.3).sub.3 ].sub.2 provides a straight-forward route to ether-free and halide-free bis(pentamethylcyclopentadienyl) lanthanide alkyls, (.eta..sup.5 (CH.sub.3).sub.5 C.sub.5).sub.2 MCH--[Si(CH.sub.3).sub.3 ].sub.2. The (.eta..sup.5 (CH.sub.3).sub.5 C.sub.5).sub.2 NdCH[Si(CH.sub.3).sub.3 ].sub.2 complexes react with H.sub.2 under mild conditions to yield the corresponding hydrides [(.eta..sup.5 (CH.sub.3).sub.5 C.sub.5).sub.2 MH].sub.2. These complexes have been found to be extremely active homogeneous olefin polymerization catalysts, as well as catalysts for olefin and acetylene hydrogenation.Type: GrantFiled: March 25, 1985Date of Patent: May 26, 1987Assignee: Northwestern UniversityInventors: Tobin J. Marks, Heiko Mauermann
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Patent number: 4657880Abstract: High surface area agglomerates of a porous oxide for the support of catalysts are provided. The agglomerates, in coarse particulate form, are incorporated into a sinterable ceramic structure as a discrete discontinuous phase. The agglomerates provide the high surface area necessary for effective catalyst support within the ceramic structure, which is sintered to provide appreciable density and strength.Type: GrantFiled: March 18, 1985Date of Patent: April 14, 1987Assignee: Corning Glass WorksInventors: Irwin M. Lachman, Carlo Golino
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Patent number: 4648975Abstract: Silica-based chromatographic and reactive materials are disclosed with surfaces modified to contain or to be coated with oxides, hydrous oxides, hydroxides, carbonates or silicates of aluminum, iron, or other suitable metals such as zirconium or titanium. The materials exhibit good resistance to dissolution and resulting loss of activity or clogging. This good resistance is particularly evident even in the high pH region (above 8-9) and in the high temperature region (above 35.degree. C.) where the dissolution rates and solubilities of aluminosilicates and of trivalent iron oxides are much smaller than those of silica.Type: GrantFiled: February 27, 1986Date of Patent: March 10, 1987Assignees: Pedro B. Macedo, Theodore A. LitovitzInventors: Aaron Barkatt, Pedro B. Macedo
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Patent number: 4637995Abstract: A method of preparing a monolithic catalyst support having an integrated high surface area phase is provided. A plasticized batch of ceramic matrix material intimately mixed with high surface area powder is formed into the desired shape for the monolith and then heated to sinter the ceramic. The resulting monolith has a strong substrate of the ceramic matrix material and a high surface area phase provided by the high surface area powder extruded with the batch.Type: GrantFiled: March 18, 1985Date of Patent: January 20, 1987Assignee: Corning Glass WorksInventors: Thomas P. DeAngelis, Irwin M. Lachman
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Patent number: 4632815Abstract: A method is provided for synthesizing a crystalline layered silicate from a specified reaction mixture having a particular composition including a specified organic directing agent, said layered silicate having a structure related to Silica-X.Type: GrantFiled: December 18, 1984Date of Patent: December 30, 1986Assignee: Mobil Oil CorporationInventor: Ernest W. Valyocsik
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Patent number: 4631267Abstract: A catalyst support having both substantial high strength and high surface area can be produced by heating a shaped mixture of a porous oxide having a surface area of at least 20 m.sup.2 /g and the precursor of an inorganic binder for the porous oxide. The binders are precursors of alumina, silica, or titania, and are capable of imparting substantial strength to the support at relatively low firing temperatures.Type: GrantFiled: March 18, 1985Date of Patent: December 23, 1986Assignee: Corning Glass WorksInventors: Irwin M. Lachman, Lawrence A. Nordlie
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Patent number: 4631269Abstract: Monolithic catalyst support structures in which a support phase of high surface area oxide material is disposed on or within a sintered ceramic material are improved by using a mixture of alumina and silica as the high surface area oxide support phase. The mixtures of alumina and silica retain higher surface area, after firing or exposure to elevated service temperatures, than does either component individually, and thereby impart higher overall surface area to the monolithic support structures.Type: GrantFiled: May 31, 1985Date of Patent: December 23, 1986Assignee: Corning Glass WorksInventors: Irwin M. Lachman, Lawrence A. Nordlie
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Patent number: 4631268Abstract: A method of forming a monolithic ceramic catalyst support having a high surface area phase of porous oxide embedded within the monolith structure is provided. The porous oxide phase is incorporated into a sinterable ceramic structure as a discrete discontinuous phase. The high surface area necessary for effective catalyst support is thereby provided within the ceramic structure, which is sintered to provide appreciable density and strength.Type: GrantFiled: March 18, 1985Date of Patent: December 23, 1986Assignee: Corning Glass WorksInventors: Irwin M. Lachman, Pronob Bardhan, Lawrence A. Nordlie
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Patent number: 4628042Abstract: Clay convertible by thermal treatment into crystalline mullite and silica is formed into green coherent bodies of desired size and shape such as, for example, microspheres, pellets or honeycombs. The bodies are then calcined to convert the clay into a mixture of crystalline mullite and silica, thereby also hardening the bodies. Without destroying the form of the bodies, e.g., without grinding and without causing the bodies to decrepitate, pores in the size range of about 150 to 350 A are formed by selectively leaching silica from the bodies. The porous mullite bodies retain porosity at elevated temperatures and are useful, for example, as catalyst supports and contact materials. Pore structure in the meso- (100-600 A diameter) and macro- (600-20,000 A diameter) size ranges may be controlled.Type: GrantFiled: May 9, 1985Date of Patent: December 9, 1986Assignee: Engelhard CorporationInventor: Barry K. Speronello
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Patent number: 4624940Abstract: Catalysts having three types of particles dispersed on a monolith have surprising oxidation and three-way activity even after exposure to temperatures above 1000.degree. C. The particle types are: (1) palladium dispersed on stabilized alumina; (2) ceria-containing promoter particles and (3) washcoat stabilization particles.Type: GrantFiled: April 12, 1985Date of Patent: November 25, 1986Assignee: Engelhard CorporationInventors: Chung-Zong Wan, Joseph C. Dettling
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Patent number: 4622311Abstract: Metal oxides having a very narrow pore size distribution of micropores within the range of between 10 and 100 Angstroms can be prepared by reacting a water-soluble basic salt of a metal hydrate with an organic compound such as an acid halide in a specific manner. The pore diameter of the metal oxide can be arbitrarily controlled within the range of micropore size by changing the molecular chain length of an organic compound, treating with an acid or calcinating at a different temperature. It is desirable that the narrow pore size distribution is centered within the range of 1.about.30 Angstroms, preferably 1.about.15 Angstroms when the metal oxide is used as a catalyst carrier.Type: GrantFiled: July 13, 1984Date of Patent: November 11, 1986Inventors: Tadahiro Wakui, Tadahiko Handa
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Patent number: 4608361Abstract: A process is disclosed for producing a sheet for a catalyst carrier for vapor-phase reactions which comprises mixing highly heat resistant ceramic fibers, organic fibers and an organic binder to form a slurry, forming the slurry into a paper sheet, impregnating the paper sheet with a silicon compound, converting the silicon compound to silica gel and heating the impregnated sheet to burn up the organic fibers and organic binder. The process produces an improved catalyst carrier for vapor-phase reactions having high porosity and good strength properties.Type: GrantFiled: December 8, 1983Date of Patent: August 26, 1986Assignees: Nichias Corporation, Honshu Paper Mfg. Co., Ltd., Sakai Chemical Industry Co., Ltd.Inventors: Nobutaka Kanamori, Masaji Kurosawa
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Patent number: 4601997Abstract: Clay, preferably kaolin, is calcined through its exotherm, but without substantial mullite formation (e.g., 1 hour at 1000.degree. C.). The calcined clay is leached with an alkaline aqueous solution to remove (i.e., leach) silica. The severity of leaching, i.e., amount of silica removed, determines whether the final product will comprise mullite plus excess Al.sub.2 O.sub.3. If the molar Al.sub.2 O.sub.3 /SiO.sub.2 ratio is <3/2 the final product will contain mullite plus excess SiO.sub.2 and if the Al.sub.2 O.sub.3 /SiO.sub.2 ratio is >3/2, the final product will contain excess Al.sub.2 O.sub.3. The leached clay is washed, preferably under acid conditions at about pH 3-5, to remove excess alkali ions; and then dried. The washed clay is then calcined at conditions to produce mullite (e.g., 3 hours at 1250.degree. F.). Materials made in this manner exhibit high pore volume despite the final high temperature heat treatment.Type: GrantFiled: December 14, 1984Date of Patent: July 22, 1986Assignee: Engelhard CorporationInventor: Barry K. Speronello
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Patent number: 4598060Abstract: This invention relates to alumina and/or silica supported catalysts which have a portion of their pores in the range of 75-1500 .ANG. and wherein are or more catalytically active metal species is contained substantially within said pores. Carbon black particles having pores of 75-1500 .ANG. and which have been reacted with the catalyst metal are used to prepare the catalyst using alumina and/or silica gels.Type: GrantFiled: January 28, 1985Date of Patent: July 1, 1986Assignee: Shell Oil CompanyInventors: Galeon W. Schoenthal, Lynn H. Slaugh
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Patent number: 4581343Abstract: A pollution control catalyst for a catalytic converter in the exhaust system of an internal combustion engine, which catalyst comprises a support impregnated with (i) at least one platinum group precious metal, and with (ii) cerium base metal, or a combination of cerium and at least one other base metal, is facilely prepared by (1) impregnating a catalyst support with precursor compounds of said cerium base metal, or of said cerium base metal and of at least one other base metal, (2) activating said impregnated support, under a neutral or oxidizing atmosphere, at a temperature ranging from 120.degree. to 800.degree. C.Type: GrantFiled: May 15, 1984Date of Patent: April 8, 1986Assignee: Pro-CatalyseInventors: Gilbert Blanchard, Jean-Pierre Brunelle, Richard Doziere, Emmanuel Goldenberg, Michel Prigent
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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: 4559321Abstract: Humic acid or the sodium salt thereof is used to modify the pore distributions in silica and/or alumina compositions.Type: GrantFiled: January 28, 1985Date of Patent: December 17, 1985Assignee: Shell Oil CompanyInventor: Lynn H. Slaugh
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Patent number: 4547283Abstract: Process for the hydroisomerization of petroleum waxes by contacting said waxes with hydrogen at hydroisomerization conditions using a catalyst comprising at least one hydrogenating metal or compound thereof present on at least one refractory oxide which has been treated with from 0.1 to 30% w, calculated on refractory oxide, of at least one reactive metal compound of Group 2a, 3a, 4a and/or 4b of the Periodic Table of the Elements.Type: GrantFiled: August 30, 1984Date of Patent: October 15, 1985Assignee: Shell Oil CompanyInventors: Emmanuel E. A. Neel, Jacques A. Levavasseur, Jacques P. Lucien
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Patent number: 4542118Abstract: Catalysts and catalyst supports are prepared by forming and drying, preferably spray-drying, an aqueous slurry of inorganic solids such as zeolites, clay, silica, alumina, and silica-alumina gel, and aluminum chlorhydrol to obtain particulate composites. The particulate composites are then reacted with ammonia in the absence of free liquid water to convert the aluminum chlorhydrol into a cohesive binder. The ammonia-reacted composites may then be washed, ion exchanged and thermally activated to obtain active attrition resistant catalysts and catalyst components.Type: GrantFiled: February 2, 1984Date of Patent: September 17, 1985Assignee: W. R. Grace & Co.Inventors: Richard J. Nozemack, John A. Rudesill, Dean A. Denton, Raymond D. Feldwick
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Patent number: 4537875Abstract: Alumina, silica or silica-alumina containing catalysts are manufactured by incorporating at least one active element selected from the metals of the groups V, VI and VIII or their compounds to a carrier, and then drying and activating. The carrier or the catalyst is shaped into extrudates and the latter are crushed to coarse particles.Type: GrantFiled: December 27, 1983Date of Patent: August 27, 1985Assignee: Societe Francaise des Produits pour Catalyse Pro-CatalyseInventors: Herve Toulhoat, Jean-Claude Plumail, Marc Mercier, Yves Jacquin
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Patent number: 4529718Abstract: Aqueous alumina coating compositions well adopted for directly impregnating/coating both ceramic and metallic catalyst supports to provide integral, both macroporous and microporous coatings therefor, which coated supports are useful for the fabrication of a wide variety of catalysts for catalyzing a broad spectrum of reactions, including those characterized by highly limited internal diffusion or by progressive catalyst poisoning, e.g.Type: GrantFiled: June 11, 1984Date of Patent: July 16, 1985Assignee: Rhone-Poulenc Specialites ChimiquesInventor: Thierry Dupin
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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: 4508841Abstract: A porous refractory inorganic oxide product is produced by shaping a mixture of carbon black and a refractory inorganic oxide and/or a precursor of refractory inorganic oxide; drying a product; firing it in an oxygen-containing gas flow while burning said carbon black.Type: GrantFiled: January 19, 1982Date of Patent: April 2, 1985Assignees: Mitsubishi Chemical Industries, Ltd., Asia Oil Company, LimitedInventors: Kazuhiko Onuma, Yoichi Kageyama, Hiromu Kobayashi, Akihiro Matsuki, Makoto Suzuki
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Patent number: 4508849Abstract: Provided is a method for the preparation of alumina or silica-alumina catalyst carriers which comprises blending a precursor of alumina or silica-alumina carriers with polytetrafluoroethylene resin particles, warming the blend and subjecting the same to a compression and shearing operation in a blender, followed by drying and baking.Type: GrantFiled: May 11, 1984Date of Patent: April 2, 1985Assignee: Nippon Oil Company, LimitedInventors: Akira Inoue, Shinji Takase, Yasuo Sekido, Masao Mori, Tatsuki Kubo
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Patent number: 4507401Abstract: Supported intermetallic compounds are produced by a two-step process. In the first step, a supported metal is formed, for example, by solvating a metallic salt such as nickel nitrate and applying it to a support medium. The treated support body is then heated in the presence of a reducing agent to produce elemental metal. The supported metal is then treated with a reactive organometallic or metal hydride compound to yield a supported intermetallic compound. For example, supported elemental nickel is treated with hexamethyldisilane to produce supported nickel silicide.Type: GrantFiled: April 1, 1983Date of Patent: March 26, 1985Assignee: AT&T Bell LaboratoriesInventors: Lawrence H. Dubois, Ralph G. Nuzzo
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Patent number: 4497909Abstract: Novel catalyst compositions are provided comprising a silica/alumina carrier having a silica content less than about 40% by weight and at least one noble metal component of Group VIII of the Periodic Table and wherein the catalyst contains (1) pores having a diameter of smaller than 600 .ANG. occupying at least 90% of the total pore volume and (2) pores having a diameter of 150 to 600 .ANG. occupying at least about 40% of the total volume of the pores having a diameter of smaller than 600 .ANG.. This catalyst is particularly useful in the production of jet fuels and white oils.Type: GrantFiled: August 6, 1981Date of Patent: February 5, 1985Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Takuji Itoh, Ikuo Akitsuki
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Patent number: 4491640Abstract: This invention relates to a low-temperature combustion catalyst comprising a layer of an inorganic fiber having fine pores and rhodium deposited therein and to a process for preparing a low-temperature combustion catalyst comprising the steps of bringing a layer of an inorganic fiber having fine pores into contact with a rhodium compound solution while circulating the solution and drying the layer in air, and concerns with a low-temperature catalytic combustion burner including such catalyst.Type: GrantFiled: July 26, 1982Date of Patent: January 1, 1985Assignee: Osaka Gas Company LimitedInventors: Hiroki Sadamori, Akio Chikazawa, Setsuo Okamura, Chikako Noda
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Patent number: 4482642Abstract: Pressed objects (slugs) of pyrogenically produced oxides such as SiO.sub.2, Al.sub.2 O.sub.3 and TiO.sub.2 are produced using a silica sol and water. As molding assistants thereby there is employed a polyhydric alcohol, e.g. glycerine or sorbitol. The water can be added adsorbed on a pyrogenically produced hydrophobized silica. The pressed object obtained can be used inter alia as catalyst carrier.Type: GrantFiled: August 9, 1982Date of Patent: November 13, 1984Assignee: Degussa AktiengesellschaftInventors: Manfred Ettlinger, Horst Ferch, Detlev Koth, Edgar Simon
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Patent number: 4472516Abstract: Disclosed is a method for selectively deactivating catalytically active sites which occur only on the surface of a zeolite of boralite catalyst. Active sites occurring on the interior of the pores are masked by saturating the catalyst with an organic compound which fills substantially the whole of the catalyst pore volume. The catalyst so treated is then exposed to a deactivating agent, such as a solution of an alkali metal salt which is substantially immiscible with, substantially insoluble in, and which is otherwise unreactive to said pore-filling compound. The catalyst is then treated to drive off the pore-filling compound, yielding a catalyst selectively deactivated only on the external surface, but which is not deactivated within the pores. The treatment enables the catalyst to be used for e.g. hydrocarbon conversion for long time periods without carbon buildups around the pore entrances, which buildup would otherwise either restrict entry into the pores by reactants or exit therefrom by product.Type: GrantFiled: February 17, 1983Date of Patent: September 18, 1984Assignee: Stamicarbon B.V.Inventor: Petrus M. G. Frenken
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Patent number: 4469814Abstract: An improved catalyst for conversion of oxygen-containing aliphatics to hydrocarbons is a silica xerogel having a layer of an aluminum compound chemically bonded onto its surface, having a maximum pore diameter of 1.1 nm and having substantially only protons and/or transition metal cations as electrical charge balancing species. The catalyst is very specific for the production of aromatics.Type: GrantFiled: November 22, 1983Date of Patent: September 4, 1984Assignee: Coal Industry (Patents) LimitedInventors: Joseph G. Robinson, David I. Barnes
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Patent number: 4469813Abstract: Highly active and selective hydroisomerization catalysts are prepared by heating to 300.degree.-450.degree. C. at subatmospheric pressure, a mixture of nickel synthetic mica montmorillonite (Ni-SMM) with a hydroxy aluminum polymeric solution. The resulting pillared Ni-SMM catalyst, preferably Pd-loaded, is especially useful in hydroisomerizing C.sub.4 -C.sub.7 paraffins.Type: GrantFiled: March 18, 1983Date of Patent: September 4, 1984Assignee: Shell Oil CompanyInventors: Jan Gaaf, Rutger A. van Santen
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Patent number: 4459366Abstract: A cracking catalyst used to crack oil to produce gasoline or higher-boiling hydrocarbon fuel is contacted with both (A) antimony or a compound thereof such as antimony tris(O,O-dipropyl phosphorodithioate) and (B) a modifying composition consisting essentially of carbon, hydrogen, nitrogen, and sulfur produced by the treatment of a metal salt of a dialkyl dithiocarbamate with a hydrolyzable germanium (IV) compound such as germanium tetrachloride, the contacting of the ctalyst with (A) and (B) prior to, during, or after use of the catalyst in a cracking process being effective in precluding or reducing adverse effects of metals such as nickel, vanadium, and iron.Type: GrantFiled: September 30, 1982Date of Patent: July 10, 1984Assignee: Phillips Petroleum CompanyInventors: Harold W. Mark, Brent J. Bertus, John S. Roberts, Dwight L. McKay, Lyle E. Fenska
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Patent number: 4459372Abstract: Surface-metallated aluminas and silicas are species many of whose physical properties, such as surface and pore volume, are unchanged but which exhibit superior hydrothermal stability. Suitable for use as catalytic supports, these materials can be simply prepared by treating the alumina or silica with a tetrahalide of a metal, such as titanium or zirconium, removing the unreacted tetrahalide, and calcining the resulting material in a moist atmosphere.Type: GrantFiled: August 25, 1982Date of Patent: July 10, 1984Assignee: UOP Inc.Inventor: Blaise J. Arena
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Patent number: 4456701Abstract: A process for hydroprocessing a hydrocarbonaceous feedstock containing constituents boiling above 350.degree. C. comprises contacting said feedstock with hydrogen under hydroprocessing conditions with a catalyst composition comprising a rigidly interconnected pack containing inorganic matrix oxide and about 10-95% fluid catalytic cracking catalyst microspheroids, based upon the total weight of said matrix oxide and said microspheroids, said pack characterized by a pore volume of at least 0.15 cc. per cc., at least about 30% of said pore volume present as pores having diameters within the range of 50-250 Angstroms and at least about 5% of said pore volume present as pores having diameters greater than 1,000 Angstroms.Type: GrantFiled: January 31, 1983Date of Patent: June 26, 1984Assignee: Chevron Research CompanyInventor: Hong C. Chen
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Patent number: 4444899Abstract: An improved process for the production of a low density formed product of an activated alumina having a large macro-pore volume and an excellent abrasion resistance, which comprises mixing the starting solid material selected from an alumina powder being able to be re-hydrated and a mixture of the alumina and other solid material with water, said starting solid material having an average particle size of 1 micron to 35 micron and a quarter deviation of particle distribution of not more than about 1.5, forming the mixture of a solid material and water into various shapes, re-hydrating the formed product by keeping it under wetted atmosphere or in water, and calcining the resulting re-hydrated product.Type: GrantFiled: April 1, 1983Date of Patent: April 24, 1984Assignee: Sumitomo Aluminum Smelting Company, LimitedInventors: Koichi Yamada, Kunio Nakazato, Katsuzo Shiraishi, Seiichi Hamano
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Patent number: 4442223Abstract: Cracking catalysts or catalyst supports prepared from mixtures comprising colloidal alumina, colloidal silica, a particulate weighting agent, and/or an active catalytic component possess excellent catalytic and physical properties. The catalysts in accordance with the invention also show excellent resistance to metal poisoning, and are also highly useful in non-cracking and/or hydroconversion processes.Type: GrantFiled: March 22, 1982Date of Patent: April 10, 1984Assignee: Mobil Oil CorporationInventors: Arthur W. Chester, William A. Stover
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Patent number: 4438217Abstract: A catalyst for the oxidation of propylene, said catalyst having the composition represented by the following formulaMo.sub.a W.sub.b Bi.sub.c Fe.sub.d A.sub.e B.sub.f C.sub.g D.sub.h O.sub.xwhereinA represents at least one element selected from the group consisting of nickel and cobalt,B represents at least one element selected from the group consisting of alkali metals, alkaline earth metals and thallium,C represents at least one element selected from the group consisting of phosphorus, arsenic, boron and niobium,D represents at least one element selected from the group consisting of silicon, aluminum and titanium,a, b, c, d, e, f, g, h, and x respectively represent the atomic ratios of Mo, W, Bi, Fe, A, B, C, D, and O,a is from 2 to 12,b is from 0 to 10,the sum of a and b is 12,c is from 0.1 to 10.0,d is from 0.1 to 10.0,e is from 2 to 20,f is from 0.005 to 3.0,g is from 0 to 4,h is from 0.Type: GrantFiled: December 30, 1982Date of Patent: March 20, 1984Assignee: Nippin Shokubai Kagako Kogyo Co., Ltd.Inventors: Masahiro Takata, Ryuji Aoki, Takahisa Sato
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Patent number: 4438219Abstract: An alumina catalyst, which has a desired porosity and surface area and is stable at high temperatures is formed by contacting a substrate with an alkali aluminate solution for a period of time sufficient to form an adherent film of hydrated alumina on the substrate, separating the substrate with the adherent film of hydrated alumina from the solution, heating the substrate and alumina film under calcining conditions until an alumina film of desired porosity and surface area is formed, and then contacting the calcined alumina film with a material which stabilizes the alumina during subsequent heating. Optionally, the alumina film can then be further calcined at a temperature higher than that used in the first calcining conditions, preferably at a temperature up to about 1260.degree. C. The stabilizing material can be one of several compounds including those of barium, silcon, and the rare earth metals.Type: GrantFiled: October 28, 1981Date of Patent: March 20, 1984Assignee: Texaco Inc.Inventors: John T. Brandenburg, John M. Crone, Jr.
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Patent number: 4428863Abstract: A process of making a high purity, low surface area porous alumina support having improved crush strength and abrasion resistance which comprises employing with the alumina a small amount of barium aluminate or silicate during its manufacture.Type: GrantFiled: July 6, 1982Date of Patent: January 31, 1984Assignee: The Dow Chemical CompanyInventor: William E. Fry
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Patent number: 4426319Abstract: The exhaust gases from internal combustion engines are catalytically oxidized/reduced, to remove CO, unburned hydrocarbons and NO.sub.x therefrom, utilizing an improved stable and long-lived catalyst which comprises (1) a support substrate, e.g., a monolithic or particulate support, and (2) an active phase deposited thereon, said active phase (2) comprising (i) cerium, (ii) iron, (iii) at least one of the metals gallium and/or yttrium, (iv) at least one of the metals platinum and/or palladium, and (v) at least one of the metals iridium and/or rhodium.Type: GrantFiled: March 5, 1982Date of Patent: January 17, 1984Assignee: ProcatalyseInventors: Gilbert Blanchard, Jean-Pierre Brunelle, Michel Prigent
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Patent number: 4422960Abstract: A catalyst for hydrotreating a heavy hydrocarbon oil containing asphaltenes comprises a porous carrier composed of one or more inorganic oxides of at least one element selected from among those of Groups II, III and IV of the Periodic Table, and at least one catalytic metal component composited with the carrier. The metal of the catalytic metal component is selected from among those of Groups VB, VIB, VIII and IB of the Periodic Table. The catalyst contains about 1 to 30% by weight of such catalytic metal component and has the following pore characteristics with regard to its pores having a diameter of 75 .ANG. or more: an average pore diameter APD of about 180 to 500 .ANG., a total pore volume PV, expressed in cc/g, being equal to or greater than a value X ##EQU1## the volume of pores with a diameter of about 180 to 500 .ANG. being at least about 0.2 cc/g, the volume of pores with a diameter of at least 1,500 .ANG. being not greater than about 0.03 cc/g, and a total surface area being at least about 60 m.Type: GrantFiled: December 14, 1980Date of Patent: December 27, 1983Assignee: Chiyoda Chemical Engineering & Construction Co., Ltd.Inventors: Yoshimi Shiroto, Takeo Ono, Sachio Asaoka, Munekazu Nakamura
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Patent number: 4416800Abstract: A method is provided for producing a catalyst and a carrier therefor in the form of sheet or honeycomb. The method comprises: beating a heat-resistant fiber such as asbesto fiber in water to form a slurry; mixing the slurry with a catalytically active agent, a carrier material therefor and/or their precursors to fix such materials in the fiber, thus forming a stock; and forming the stock into a sheet and drying the same. The sheet thus obtained may be formed into a honeycomb structure with an improved adhesive.Type: GrantFiled: March 19, 1981Date of Patent: November 22, 1983Assignee: Sakai Chemical Industry Co., Ltd.Inventors: Kazunobu Abe, Tadao Nakatsuji
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Patent number: 4415477Abstract: The herein-proposed catalyst for dehydrogenation oxygen-containing derivatives of the cyclohexane series having the following general formula ##STR1## where R.sub.1 is either hydrogen or alkyl C.sub.1 -C.sub.4,R.sub.2 and R.sub.3 are radicals having either the same or different values --H, --OH, .dbd.O, provided that R.sub.2 and R.sub.3 are not hydrogen atoms both at a time,R.sub.1, R.sub.2, R.sub.3 being linked to different carbon atoms of the ring to form the corresponding cyclic ketones and/or phenols, comprises the following components (wt. %):nickel--15 to 55tin--0.2 to 1.95inert carrier--84.8 to 43.05,while the atomic ratio of nickel and tin lies within 15:1 and 410:1, respectively, and may contain additionally an alkali salt of a mineral acid in an amount of 0.01 to 1.0 wt. %.Type: GrantFiled: December 22, 1980Date of Patent: November 15, 1983Inventors: Alexandr Y. Rozovsky, Valentin D. Stytsenko, Svetlana A. Nizova, Petr S. Belov, Alexandr J. Dyakonov
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Patent number: 4410453Abstract: The performance of a silver on alumina catalyst for the oxidation of ethylene to ethylene oxide is improved by the inclusion, in the raw mix for the carrier of an oxide, or oxide precursor, of zinc, lanthanum, or magnesium in the amount of 7 to 40%, calculated as the oxide.Type: GrantFiled: February 1, 1982Date of Patent: October 18, 1983Assignee: Norton Co.Inventors: Joseph R. Kiovsky, George W. Young, Ramzi Y. Saleh
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Patent number: 4409129Abstract: Disclosed is a method of manufacturing a catalyst composed of fine metal particles having a large specific surface area, such as a platinum black catalyst. According to this method, a solution containing a platinum ion and at least one metal ion or complex ion having an oxidation-reduction potential different from that of platinum is reduced, and the metal having an oxidation-reduction potential different from that of platinum is dissolved out from the precipitated particles. The catalyst obtained according to this method has a very fine particle size and is suitable for an electrode of a fuel cell.Type: GrantFiled: October 19, 1981Date of Patent: October 11, 1983Assignee: Hitachi, Ltd.Inventors: Seizi Takeuchi, Shimpei Matsuda
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Patent number: 4409131Abstract: For preparing supported catalysts containing cobalt or nickel and molybdenum, using single solution impregnation, stable solutions of cobalt or nickel complexed with carboxylic acids are compatible with ammonium molybdate and result is superior catalysts.Type: GrantFiled: February 22, 1982Date of Patent: October 11, 1983Assignee: MaineInventor: John A. Fetchin
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Patent number: 4407734Abstract: A catalyst that is especially useful in the production of aromatic nitriles by a fluidized bed process comprises highly attrition-resistant microspherical particles of vanadia and an inert support and is prepared by spray drying an aqueous slurry of finely divided particles of vanadia and the support.Type: GrantFiled: August 10, 1981Date of Patent: October 4, 1983Assignee: W. R. Grace & Co.Inventors: Dean A. Denton, Raymond D. Feldwick