Of Group Iii Metal (i.e., Sc, Y, Al, Ga, In Or Tl) Patents (Class 502/238)
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Patent number: 6121187Abstract: The present invention relates to amorphous microporous mixed oxides, characterized by having, in dried form, a narrow pore size distribution (half width <.+-.10% of the pore diameter) of micropores with diameters in the range of <3 nm and a total surface area of between 20 and 1000 m.sup.2 /g, containing a fraction of from 0.1 to 20% by weight of non-hydrolyzable organic groups, and to a process for the preparation of such oxides.Type: GrantFiled: October 26, 1998Date of Patent: September 19, 2000Assignee: Studiengesellschaft Kohle mbHInventor: Wilhelm F. Maier
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Patent number: 6107236Abstract: Silica powders and mixed silica-oxide powders and methods of preparing such powders for use as catalyst supports for polymerization processes.Type: GrantFiled: April 14, 1998Date of Patent: August 22, 2000Assignee: Chevron Chemical Company LLCInventors: Theresa A. Pecoraro, Ignatius Y. Chan, Darryl K. Whaley, Pamela R. Auburn
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Patent number: 6103916Abstract: A silver catalyst excelling in catalytic performance and permitting production of ethylene oxide with a high selectivity for a long time, a method for the production of ethylene oxide by the use of the silver catalyst, and a method for ideal manufacture of the silver catalyst are disclosed. The silver catalyst is formed by depositing silver on a carrier having .alpha.-alumina as a main component and used for the production of ethylene oxide, which carrier of the silver catalyst has undergone the following treatment capable of yielding a wash exhibiting a resistivity index of not less than 10,000 .OMEGA..multidot.cm (25.degree. C.):(Method of treatment)In a conical beaker having an inner volume of 500 ml, 300 ml of the carrier is placed, dried therein at 120.degree. C. for two hours, and boiled in conjunction with (water absorption +220) ml of pure water added thereto under normal pressure at 90.degree. C.Type: GrantFiled: February 19, 1999Date of Patent: August 15, 2000Assignee: Nippon Shokubai Co., Ltd.Inventors: Hitoshi Takada, Masahide Shima
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Patent number: 5981425Abstract: A coating composition which is excellent in water resistance, weatherability and durability and can maintain its appearance for a prolonged period of time can be provided. A coating composition comprising a coating component and a photocatalyst containing calcium phosphate and titanium oxide is disclosed. As the photocatalyst, use is made of titanium oxide particles partially covered thereon with calcium phosphate, or porous body coated thereon with a film of titanium oxide, the film of titanium oxide being further covered partially thereon with calcium phosphate. The crystal form of titanium oxide is preferably anatase. The organic coating includes vinyl-type synthetic resin emulsions, and the inorganic coating is e.g. a solution containing a metal alkoxide for forming a film by a sol-gel method.Type: GrantFiled: April 2, 1999Date of Patent: November 9, 1999Assignees: Agency of Industrial Science & Tech., Daicel Chemical Ind., Ltd., H. Taoda, T. NonamiInventors: Hiroshi Taoda, Toru Nonami, Takaaki Fujiwa, Masahiro Kagotani
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Patent number: 5917069Abstract: An adsorbent is described based on an inorganic support material with exchangeable mono- and divalent cations, characterized by the fact that the specific surface of the support material is >100 m.sup.2 /g, its cation exchange capacity is>30 mg-equiv/100 g, its pore volume is>0.15 m/g, the pH value of an aqueous suspension of 8 g of support material in 100 mL of H.sub.2 O is<7.5 and that at least 60, preferably at least 70% of the exchangeable mono- and/or divalent cations are exchanged by cations acting as Lewis acids, preferably Al.sup.3 + cations.Type: GrantFiled: August 15, 1997Date of Patent: June 29, 1999Assignee: Sud-Chemie AGInventors: Wolfgang Buckl, Hermann Ebert, Helmut Eicke, Norbert Schall, Werner Zschau, Reinhard Hahn
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Patent number: 5916837Abstract: Porous microcomposites comprising a perfluorinated ion-exchange polymer (PFIEP) containing pendant metal cation exchanged sulfonate groups, metal cation exchanged carboxylate groups, or metal cation exchanged sulfonate and carboxylate groups, wherein the metal cation may be ligand coordinated, and optionally pendant sulfonic acid groups, carboxylic acid groups, or sulfonic acid and carboxylic acid groups, the PFIEP being entrapped within and highly dispersed throughout a network of metal oxide, a network of silica or a network of metal oxide and silica can be prepared from PFIEP and one or more precursors selected from the group consisting of a metal oxide precursor, a silica precursor, and a metal oxide and silica precursor using an in situ process. Preferred metal cations are Cr, Sn, Al, Fe, Os, Co, Zn, Hg, Li, Na, Cu, Pd or Ru. Such microcomposites have a first set of pores having a pore size diameter ranging from about 0.Type: GrantFiled: July 19, 1996Date of Patent: June 29, 1999Assignee: E.I. du Pont de Nemours and CompanyInventors: Mark Andrew Harmer, Qun Sun
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Patent number: 5895770Abstract: A transition metal containing catalyst having a silica-support is provided for the production of polyolefins from .alpha.-olefins that can be converted to polymer films, preferably thin films of polyolefin, which have lower defects resulting from a decreased presence of silica-containing residues from the catalyst. The catalyst has a porous silica support component and a catalytic component which may include, but is not limited to, such materials as chromium, magnesium-titanium (Ziegler-Natta type) or metallocene compounds (Metallocene catalyst type). The porous silica component of the catalyst has an average pore volume of from about 2.5 to about 3.5 ml/g and a surface area of 200 to 400 m.sup.2 /g and preferably 250 to 350 m.sup.2 /g. The average pore diameter ranges from about 285 to about 700 Angstroms and preferably 500-700 Angstroms for porous silica components having surface areas of 200 m.sup.2 /g and preferably 285-400 Angstroms for porous silica components having surface areas of 350 m.sup.2 /g.Type: GrantFiled: March 21, 1997Date of Patent: April 20, 1999Assignee: PQ CorporationInventors: Thomas J. Pullukat, Carl A. Gillings, Reinhard H. Witt
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Patent number: 5879539Abstract: The invention concerns a catalyst for conversion of hydrocarbon feeds. The catalyst is essentially constituted by 0.05% to 10% by weight of a precious metal and a silica (5-70%)/alumina support with a specific surface area of 100-500m.sup.2 /g. The catalyst has an average pore diameter of 1-12 nm, the pore volume of pores with diameters between the average diameter.+-.3 nm being more than 40% of the total pore volume. The dispersion of the precious metal is 20-100% and the distribution coefficient for the precious metal is greater than 0.1.The invention also concerns a process for the hydroisomerization of feeds with boiling points of more than 350.degree. C. using this catalyst. The process is operated between 200.degree. C. and 450.degree. C. at 2-25 MPa with a VVH of 0.1-10 h.sup.-1 and a hydrogen/feed volume ratio of 100-2000.Type: GrantFiled: April 3, 1996Date of Patent: March 9, 1999Assignee: Institut Francais du PetroleInventors: Samuel Mignard, Nathalie Marchal, Slavik Kasztelan, Pierre-Henri Bigeard, Alain Billon
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Patent number: 5851947Abstract: Aerogels or xerogels containing atomically dispersed noble metals for applications such environmental remediation. New noble metal precursors, such as Pt--Si or Pd(Si--P).sub.2, have been created to bridge the incompatibility between noble metals and oxygen, followed by their incorporation into the aerogel or xerogel through sol-gel chemistry and processing. Applications include oxidation of hydrocarbons and reduction of nitrogen oxide species, complete oxidation of volatile organic carbon species, oxidative membranes for photocatalysis and partial oxidation for synthetic applications.Type: GrantFiled: December 16, 1996Date of Patent: December 22, 1998Assignee: The Regents of the University of CaliforniaInventors: Lucy M. Hair, Robert D. Sanner, Paul R. Coronado
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Patent number: 5798314Abstract: A supported catalyst component for an olefin polymerization catalyst consisting essentially of a solid particulate support and a magnesium halide; and an olefin polymerization catalyst consisting essentially of a solid particulate support and a magnesium halide, a Group 4 or 5 transition metal compound, and a Group 2 or 13 organometallic compound, and wherein a majority of particles of the solid particulate support are in the form of an agglomerate of subparticles.Type: GrantFiled: June 4, 1996Date of Patent: August 25, 1998Assignee: The Dow Chemical CompanyInventors: Lee Spencer, Marc A. Springs
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Patent number: 5789336Abstract: Micro-mesoporous gel consisting of a silica matrix possibly wherein one or more metal oxides selected from transition metals or metals belonging to groups IIIA, IVA and VA are uniformly dispersed, characterized by a monomodal porosity distribution.Type: GrantFiled: January 11, 1995Date of Patent: August 4, 1998Assignee: Eniricerche S.p.A.Inventors: Giannino Pazzucconi, Gianluca Bassi, Roberto Millini, Carlo Perego, Giovanni Perego, Giuseppe Bellussi
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Patent number: 5733836Abstract: A composition comprises at least one inorganic oxide and an oxygen-containing metal compound selected from the group consisting of a metal hydroxide, a metal oxide, and combinations of any two or more thereof. The composition can be optionally supported on a support such as an alumina. A process for producing mercaptans comprises contacting an alcohol with hydrogen sulfide in the presence of the composition under a condition sufficient to produce a mercaptan.Type: GrantFiled: March 22, 1996Date of Patent: March 31, 1998Assignee: Phillips Petroleum CompanyInventors: Dean E. Stinn, Harold J. Swindell, Donald H. Kubicek, Marvin M. Johnson
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Patent number: 5712037Abstract: A method for producing high surface area, thermally stable, microporous porous ceramic materials involves replacing a portion of the silicon in a sol or gel comprising silica (silicon dioxide) with cations of another metal. The metal-substituted silica sols are dried and fired to yield porous ceramic materials. Similarly, metal-substituted gels are fired to yield porous ceramic materials. When compared with unsubstituted silica materials, the materials thus produced offer advantageous benefits including improved stability in a basic environment, enhanced thermal stability, and advantageous surface properties such as intrinsic negative charge.Type: GrantFiled: June 2, 1995Date of Patent: January 27, 1998Assignee: Wisconsin Alumni Research FoundationInventors: Marc A. Anderson, Lixin Chu
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Patent number: 5661097Abstract: A supported catalyst component for an olefin polymerization catalyst comprising a solid particulate support, a magnesium halide, and optionally a Group 4 or 5 transition metal compound, a Group 2 or 13 organometal compound, and an electron donor, wherein a majority of particles of the solid particulate support is in the form of an agglomerate of subparticles. A process for preparing this supported catalyst component. A catalyst composition comprising this catalyst component and a cocatalyst. An olefin polymerization process using such a catalyst composition.Type: GrantFiled: August 12, 1994Date of Patent: August 26, 1997Assignee: The Dow Chemical CompanyInventors: Lee Spencer, Marc A. Springs
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Patent number: 5639412Abstract: A method for producing high surface area, thermally stable, microporous porous ceramic materials involves replacing a portion of the silicon in a sol or gel comprising silica (silicon dioxide) with cations of another metal. The metal-substituted silica sols are dried and fired to yield porous ceramic materials. Similarly, metal-substituted gels are fired to yield porous ceramic materials. When compared with unsubstituted silica materials, the materials thus produced offer advantageous benefits including improved stability in a basic environment, enhanced thermal stability, and advantageous surface properties such as intrinsic negative charge.Type: GrantFiled: June 2, 1995Date of Patent: June 17, 1997Assignee: Wisconsin Alumni Research FoundationInventors: Marc A. Anderson, Lixin Chu
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Patent number: 5618772Abstract: A method for producing a catalyst having high catalytic activity even at high temperatures of 1200.degree. C. or higher. Fine alumina particles, of which 50% by weight or more have a particle size of 100 nm or less, are mixed with a catalytic component and a substance of inhibiting the sintering of fine alumina particles to form a slurry mixture. This slurry is dried and then calcined to obtain a porous catalyst. The fine alumina particles in the porous catalyst have a large specific surface area even at high temperatures and therefore the porous catalyst maintains its high catalytic activity even at high temperatures of 1200.degree. C. or higher.Type: GrantFiled: April 19, 1995Date of Patent: April 8, 1997Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Akihiko Suda, Yoshio Ukyo, Hideo Sobukawa, Toshio Kandori, Masayuki Fukui
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Patent number: 5607890Abstract: A supported Lewis acid catalyst system for catalyzing hydrocarbon conversion reactions including cationic polymerization, alkylation, isomerization and cracking reactions is disclosed, wherein the catalyst system comprises an inorganic oxide support having immobilized thereon a least one strong Lewis acid comprising at least one metal salt of a strong Bronsted acid wherein the metal is selected from the group consisting of aluminum, boron gallium, antimony, tantalum, niobium, yttrium, cobalt, nickel, iron, tin, zinc, magnesium barium strontium, calcium, tungsten, molybdenum and the metals of the lanthanide series and wherein the strong Bronsted acid is selected from the group consisting of mineral and organic acids stronger than 100% sulfuric acid.Type: GrantFiled: July 15, 1996Date of Patent: March 4, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Frank J. Chen, Alain Guyot, Thierry Hamaide, Christophe Le Deore
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Patent number: 5538931Abstract: A process for preparing a supported catalyst comprising a transition metal selected from palladium, platinum, nickel, cobalt or copper on an aerogel support, which includes the steps of providing a mixture containing an alkoxide precursor of the aerogel, a chelate complex of the transition metal with a chelating agent having Si(OR).sub.3 anchor groups, and an organic solvent in which the chelate complex is soluble; hydrolyzing the mixture by admixing it with water to form a gel; and converting the gel under supercritical conditions into the transition metal aerogel-supported catalyst. The supported catalyst has an especially homogeneous distribution of the metal component and is suitable, for example, for use as a hydrogenation catalyst.Type: GrantFiled: June 10, 1994Date of Patent: July 23, 1996Assignee: Solvay Deutschland GmbHInventors: Benoit Heinrichs, Jean-Paul Pirard, Rene Pirard
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Patent number: 5510555Abstract: A catalyst, which is active in the oligomerization of olefins is an X-ray-amorphous silica-alumina-nickel oxide gel having an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 30/1 to 500/1, and NiO/SiO.sub.2 molar ratio of from 0.001/1 to 0.01/1, a superficial area of from 500 m.sup.2 /g to 1.000 m.sup.2 /g, and a porosity of from 0.3 ml/g to 0.6 ml/g, the means pore diameter being 1 nm (10 Angstrom), and devoid of pores having a diameter over 3 nm (30 Angstrom). The catalyst selectively dimerizes isobutene into alpha- and beta-isobutene and oligomerizes propylene into its relative dimers and trimers. A process is described for preparing the silica-alumina-nickel oxide gel.Type: GrantFiled: February 10, 1994Date of Patent: April 23, 1996Assignee: Eniricerche, S.p.A.Inventors: Maurizio Brunelli, Walter Castelvetro, Giuseppe Bellussi, Stefano Peratello
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Patent number: 5472927Abstract: A catalyst or membrane system comprising a thermostable, high porous layer applied on a less porous or nonporous support layer, in particular on the inner surface of a monolith or sintered metal body, in the inner pores of .alpha.-alumina, of a carbon carrrier or on the surface of a ceramic membrane. The catalyst system can be prepared by spreading a solution of a metallo-organic compound on the inner surface of the support layer and then converting the organometallic compound into the oxide. In the high-porous layer thus obtained, a catalytically active material can be applied in the conventional manner.Type: GrantFiled: September 30, 1993Date of Patent: December 5, 1995Assignees: Gastec N. V., Nederlandse Organisatie Voor toegepast-natuurwetenschappelijk Onderzoek TnoInventors: Aletta Mulder, Francien van Looy, John W. Geus
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Patent number: 5455216Abstract: A process for the preparation of a supported catalyst for the polymerization of .alpha.-olefins, in which(1) a silicon dioxide-containing support gel is prepared by(1.1) introducing a sodium water glass or potassium water glass solution into a swirling stream of an aqueous mineral acid longitudinally and tangentially to the stream, spraying the resultant silica hydrosol in drop form into a gaseous medium and allowing it to solidify to form a hydrogel, and freeing the resultant hydrogel from salts by washing without prior ageing,(1.2) drying the hydrogel resulting from (1.1) to form the support gel,(2) the support gel (1) is charged with chromium trioxide or a chromium compound which can be converted into chromium trioxide under the conditions of process step (3), giving a chromium-containing support gel, and(3) the chromium-containing support gel (2) is heated at from 400.degree. to 1100.degree. C.Type: GrantFiled: September 21, 1993Date of Patent: October 3, 1995Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Mueller, Godofredo Follmer, Rainer Konrad, Roland Saive, Martin Lux, Hans-Helmut Goertz, Guido Funk
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Patent number: 5453260Abstract: Disclosed are amorphous silica or silica-alumina spherical particles composed of X-ray diffractometrically substantially amorphous silica or silica-alumina, wherein individual particles have a definite spherical shape and a notched surface, the circularity (A) represented by the following formula: ##EQU1## wherein r1 stands for the radius of the circumcircle of the profile of the particle in an electron microscope photo thereof and r2 stands for the radius of the inscribed circle of the profile of the particle in the electron microscope photo, is in the range of from 0.90 to 1, the notching degree (B) represented by the formula: ##EQU2## wherein .DELTA.t stands for the depth between the peak and trough in the radial direction of notches on the profile of the particle in the electron microscope photo and r1 is as defined above, is in the range of from 1 to 10%, and the primary particle size (2r1) determined by the electron microscope method is in the range of from 0.1 to 20 .mu.m.Type: GrantFiled: February 8, 1993Date of Patent: September 26, 1995Assignee: Mizusawa Industrial Chemicals, Ltd.Inventors: Tadahisa Nakazawa, Masahide Ogawa, Kiyoshi Abe, Kazuhiko Suzuki, Takashi Tokita, Toshio Ito
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Patent number: 5426082Abstract: Microspherical cogel particles comprising silica and at least one other metal oxide are prepared by forming a slurry of porous particulate material comprising silica and a liquid medium comprising at least 90%, by weight of the liquid medium, of an organic liquid and subjecting the slurry to spray drying. The method enables agglomeration of particulate material of especially small particle size to obtain microspherical particles of a size especially suitable for us as a catalyst support. The particles have a pore size of at least 2 cc/g and, especially when the particles contain titanium atoms, are especially suitable for use in the preparation of a catalyst for the polymerization of olefins.Type: GrantFiled: May 12, 1993Date of Patent: June 20, 1995Assignee: Unilever Patent Holdings, B. V.Inventor: Christine E. Marsden
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Patent number: 5395812Abstract: A catalyst for the production of ethylene oxide is disclosed which comprises an .alpha.-alumina carrier having the outer surface thereof and the surface of pores therein coated with an amorphous silica-alumina mixture having a total Si and Al content in the range of from 3.times.10.sup.-4 to 2.times.10.sup.-1 g/g of carrier and an Si/Al ratio in the range of from 0.05 to 50.0 g/g, 5 to 25% by weight based on perfected catalyst of minute metallic silver particles, and 0.0001 to 0.05 gram equivalent weight per kg of perfected catalyst of cesium. The catalyst, when used for the production of ethylene oxide by the catalytic vapor-phase oxidation of ethylene with molecular oxygen, possesses high selectivity, high activity, and high durability to ensure a long service life.Type: GrantFiled: February 25, 1993Date of Patent: March 7, 1995Assignee: Nippon Shokubai Co., Ltd.Inventors: Shinichi Nagase, Hirohiko Tanabe, Hideki Imai
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Patent number: 5346871Abstract: The present invention is directed to a novel catalyst composition and its use in the dehydrogenation of paraffins to olefins. The catalyst comprises an alloy of a Group VIII noble metal and a metal selected from the group consisting of zinc and gallium on a support selected from the group consisting of silica, zinc oxide modified silica and zinc oxide modified silica-pillared clays when said alloy is a zinc alloy, and silica, gallium oxide modified silica and gallium oxide modified silica-pillared clays when said alloy is a gallium alloy. The instant catalyst is an active and selective catalyst for the catalytic dehydrogenation of paraffins to olefins, especially gaseous paraffins, having the added benefit of retaining high activity and selectivity even following repeated regeneration by calcination in oxygen containing gas at temperatures of 450.degree. C. to 650.degree. C., preferably 450.degree. C. to 500.degree. C.Type: GrantFiled: March 9, 1993Date of Patent: September 13, 1994Assignee: Exxon Research & Engineering Co.Inventors: John L. Robbins, Elise Marucchi-Soos, Jack W. Johnson, John F. Brody
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Patent number: 5342814Abstract: The preparation is disclosed of an extruded catalyst based on a silica/alumina gel, which catalyst is particularly active in acid-catalyzed reactions, such as the oligomerization of light olefins, e.g., propylene.Type: GrantFiled: December 3, 1992Date of Patent: August 30, 1994Assignees: Eniricerche S.p.A., Euron S.p.A., Snamprogetti, S.p.A.Inventors: Stefano Peratello, Carlo Perego, Giuseppe Bellussi
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Patent number: 5316996Abstract: A compound oxide catalyst carrier which comprises a silica-alumina or a titania-alumina and has a relative standard deviation of peak intensity of aluminum ranging from 0.100 to 0.170, as measured by scanning a cross section of a particle of the compound oxide catalyst carrier with an EPMA in a scan-line direction along a diameter-line or an approximate diameter-line of the cross section, has a moderately uniform aluminum concentration distribution in solid particles a moderate acidity and, therefore, is suitable for use as a catalyst carrier requiring attrition resistance and ability of inhibiting generation of coke or excessive cracking, such as a carrier of catalysts for production of middle distillate fractions by a suspension bed process hydrocracking of heavy oil.Type: GrantFiled: May 14, 1992Date of Patent: May 31, 1994Assignee: Idemitsu Kosan Co., Ltd.Inventor: Toshio Itoh
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Patent number: 5310712Abstract: In a novel process for the preparation of a supported catalyst for the polymerization of .alpha.-olefins, a carrier gel (1) is first prepared by a method in which a sodium or potassium waterglass solution is introduced into a stream of an aqueous mineral acid which is subjected to angular momentum and may contain aluminum ions, longitudinally and tangentially to the stream, the resulting silica hydrosol sprayed in the form of drops into a gaseous medium and allowed to solidify into a hydrogel, and the resulting hydrogel is freed from salts by washing without prior aging and, if necessary, freed from some of the water by extraction with alcohols and/or ketones and is then dried. This gives the carrier gel (1), which is milled and is fractionated according to particle size. In a second process step, the carrier gel (1) is laden with chromium trioxide or with a chromium compound which can be converted into chromium trioxide, after which the resulting chromium-containing carrier gel (2) is heated at from 400.Type: GrantFiled: September 30, 1992Date of Patent: May 10, 1994Assignee: BASF AktiengesellschaftInventors: Guido Funk, Rainer Hemmerich, Hans Gropper, Erich Kolk, Godofredo Follmer
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Patent number: 5302569Abstract: An unreduced catalyst which contains, per 100 parts by weight of CuO, 40 to 130 parts by weight of ZnO, 2 to 50 parts by weight of Al.sub.2 O.sub.3 and, optionally, 0.5 to 8 parts by weight of an oxide of Mn, Mo, V, Zr and/or an alkaline earth metal, and, also optionally, 2 to 80 parts by weight of a support. The catalyst has a total BET surface area of 80 to 175 m.sup.2 /g, 75% to 95% of the total BET surface area is formed by pores having a radius r.sub.p .ltoreq.15 nm. The invention further relates to a process for the production of the catalyst and its use for the hydrogenation of aldehydes.Type: GrantFiled: August 17, 1992Date of Patent: April 12, 1994Assignee: Hoechst AktiengesellschaftInventors: Gerhard Horn, Carl D. Frohning
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Patent number: 5273949Abstract: Thermally stable alumina having a high specific surface at elevated temperatures, well suited as a catalyst support material, e.g., as the support substrate of catalysts useful for the conversion of exhaust gases emanating from internal combustion engines, contain an effective heat stabilizing amount of silica, such silica essentially being distributed within the crystalline network/structure of the alumina, and such silica-stabilized alumina having an isoelectric point above 7 and a reduced capacity for the isomerization of olefins.Type: GrantFiled: May 13, 1992Date of Patent: December 28, 1993Assignee: Rhone-Poulenc ChimieInventors: Thierry Chopin, Georges Dovergne, Jean-Luc Le Loarer
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Patent number: 5139989Abstract: This invention relates to a catalytic composite which is an amorphous solid solution of phosphorus, silicon and aluminum oxides. The composite is characterized in that it contains from about 5 to about 50 weight percent Al.sub.2 O.sub.3, from about 10 to about 90 weight percent SiO.sub.2 and from about 5 to about 40 weight percent P.sub.2 O.sub.5 and has pores whose average diameters range from about 30 to about 200 Angstroms. The composite is further characterized in that it has a pore volume of about 0.35 to about 0.75 cc/g and a surface area of about 200 to about 420 m.sup.2 /g. The composite may be prepared by forming a mixture of sols of alumina and silica and a phosphorus compound, gelling the mixture to form particles and then calcining the particles to provide the amorphous solid solution.Type: GrantFiled: August 28, 1991Date of Patent: August 18, 1992Assignee: UOPInventors: Tai-Hsiang Chao, Michael W. Schoonover
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Patent number: 5126308Abstract: This invention relates to an improved process for converting methanol to light olefins and to a catalyst for carrying out the process. The catalyst comprises a metal aluminophosphate molecular sieve having the empirical formula (EL.sub.x Al.sub.y P.sub.z)O.sub.2 where EL is a metal and x, y and z are mole fractions of EL, Al and P respectively. Preferred metals are silicon, magnesium and cobalt, with silicon especially preferred. The molecular sieve catalyst is composed of particles at least 50% of which have a particle size less than 1.0 .mu.m and no more than 10% of the particles have a particle size greater than 2.0 .mu.m. It is also preferred that the metal content (x) be from about 0.005 and 0.05 mole fraction.Type: GrantFiled: November 13, 1991Date of Patent: June 30, 1992Assignee: UOPInventors: Paul T. Barger, Stephen T. Wilson, Jennifer S. Holmgren
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Patent number: 5079208Abstract: Alumina silicas for refining glyceride oils having a surface area of at least 150 m.sup.2 /g and a pore volume of 0.6 ml/g in pores having a pore diameter of about 4-20 nm, exhibiting a phosphorous removal capacity of more than 100 ppm P/1% in combination with a sufficient bleaching activity. These silicas should be prepared at temperatures for the acid treatment, hydrogel treatment, and alumina silica formation of 35.degree.-55.degree. C.Type: GrantFiled: December 22, 1989Date of Patent: January 7, 1992Assignee: Van den Bergh Foods Co., division of Conopco, Inc.Inventors: Jannes G. Lammers, Jan W. Groeneweg
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Patent number: 5079317Abstract: A process for producing polyethylene is disclosed in which ethylene is polymerized in the presence of a composite catalyst. The catalyst is made up of a solid catalyst component typified by a selected chromium compound, a modified aluminum compound typified by a trialkylaluminum and an R.sub.n.sup.1 Al(OR.sup.2).sub.3-n compound wherein R.sup.1 and R.sup.2 are represented by selected hydrocarbon groups and n by 0.ltoreq.n.ltoreq.3. The polymer has improved melt index, flow parameter and melt tension characteristics.Type: GrantFiled: October 11, 1989Date of Patent: January 7, 1992Assignee: Nippon Oil Co., Ltd.Inventors: Yoshino Tajima, Kazutoshi Nomiyama, Nobuyuki Kuroda, Kazuo Matsuura
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Patent number: 5045522Abstract: Hydrogen sulfide is removed from a fluid stream containing hydrogen sulfide by contacting the fluid stream under suitable absorbing conditions with an absorbing composition comprising zinc titanate, alumina and silica promoted with a metal selected from the group consisting of phosphorus, tungsten, molybdenum, metals of Group VIII of the Periodic Table, and mixtures of any two or more thereof. An absorbing composition and a process for producing such absorbing composition are also disclosed.Type: GrantFiled: March 27, 1990Date of Patent: September 3, 1991Assignee: Phillips Petroleum CompanyInventor: Dennis R. Kidd
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Patent number: 5023224Abstract: Alkylene oxide adducts of organic compounds having active hydrogen atoms are prepared by a process which comprises contacting and reacting an alkylene oxide reactant comprising one or more vicinal alkylene oxides with an active hydrogen containing reactant comprising one or more compounds having active hydrogen atoms in the presence of a catalytically effective amount of one or more lanthanum compounds comprising silicate, metasilicate and mixtures thereof. The product alkoxylates are known to be useful, for instance, as nonionic surfactants, wetting and emulsifying agents, solvents, and chemical intermediates.Type: GrantFiled: April 16, 1990Date of Patent: June 11, 1991Assignee: Shell Oil CompanyInventor: Richard A. Kemp
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Patent number: 4959338Abstract: The present invention relates to a heat-resistant catalyst carrier and a catalyst carrier molding comprising silica and alumina, in which a silica content is in a range of 2% by weight to 30% by weight, and an overall pore volume is at least 0.3 ml/g and a volume of pores having a diameter of 100 .ANG. or larger accounts for at least 60% of the overall pore volume, or which have a specific surface area of at least 20 m.sup.2 /g after firing at 1200.degree. C. in air, or which show a peak area at -110 ppm to -130 ppm which is 0 to 10% with respect to a peak area at -50 ppm to -130 ppm, as measured by the nuclear magnetic resonance (.sup.29 Si-NMR) method using silicone rubber (-21.9 ppm) as a reference peak after firing at 500.degree. C. in air, and is also concerned with a catalyst for combustion comprising the same.Type: GrantFiled: November 30, 1988Date of Patent: September 25, 1990Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Tadashi Miura, Takuji Itoh, Masaaki Kadono, Masakichi Shimada
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Patent number: 4937218Abstract: The present invention relates to a process for the hydroconversion of heavy crude oil and an improved regenerable catalyst for use therein. The process broadly comprises (a) introducing into a hydroconversion reaction zone a feedstock of crude oil, hydrogen, from about 10 to about 1000 wppm of an active phase source selected from the group consisting of Group VB metals, Group VIB metals, Group VIIB metals, Group VIIIB metals, Group IA metals, Group IIA metals, and mixtures thereof, and from about 0.1 to about 20.0 wt. % of a refractory carrier material having a surface area in the range of from about 10 to about 700 m.sup.2 /g, a total pore volume of from about 0.1 to about 2.0 cm.sup.3 /g, an average pore diameter in the range of from about 20 to about 4,000 .ANG., a particle size diameter in the range of from about 1 to about 1000 .mu.m and pore size distribution according to the following:______________________________________ Pores of radius r (.ANG.Type: GrantFiled: October 16, 1989Date of Patent: June 26, 1990Assignee: Intevep, S.A.Inventors: Magdalena M. Ramirez de Aqudelo, Carmen E. Galarraga
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Patent number: 4894357Abstract: A process for adjusting at least one of the structural and surface characteristics of an oxide material, e.g. SiO.sub.2 or Al.sub.2 O.sub.3, by dehydration of a water-containing oxide gel under supercritical conditions by extracting the water with an extraction agent such as CO.sub.2 at a pressure above the critical pressure of the extraction agent.Type: GrantFiled: October 31, 1985Date of Patent: January 16, 1990Assignee: Kali-Chemie AktiengesellschaftInventors: Bernd Hupe, Robert Walter
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Patent number: 4888319Abstract: The invention relates to a process for the preparation of a shapable dough which comprises mixing and kneading a particulate silica-alumina with water and with an alkanolamine or ammonia to obtain a mixture having a total solids content of from 25 to 60% by weight, the alkanolamine or ammonia being present in an amount of from 0.5 to 20% by weight on the total solids content of the mixture, to a shapable dough obtained by this process, to the preparation of silica-alumina extrudates therefrom and to their use as catalyst carriers in hydrocarbon conversion or hydrocarbon synthesis reactions.Type: GrantFiled: October 11, 1988Date of Patent: December 19, 1989Assignee: Shell Oil CompanyInventors: Jacobus T. Daamen, Tom Huizinga
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Patent number: 4870045Abstract: A molded catalyst has a catalyst material homogeneously distributed in an inorganic molding or a catalytic material anchored on the surface of molding is produced from a flowable molding composition made up of(a) an oxide mixture with contents of amorphous SiO.sub.2 and aluminum oxide and/or(b) electrostatic precipitator ash from high-temperature coal-burning power plants and/or(c) calcined ground bauxite, as a reactive, finely divided component, and an alkali silicate solution as well as optionally finely divided fillers, by casting into a mold or, respectively, by pressing or preferably extrusion and hardening of the molding composition at temperatures of 50.degree.-95.degree. C. Removal of water at 100.degree.-550.degree. C. is possible, as well as baking at temperatures of up to 1,500.degree. C.Type: GrantFiled: July 23, 1987Date of Patent: September 26, 1989Assignee: Dynamit Nobel AktiengesellschaftInventors: Bertram Gasper, Karlheinz Neuschaffer, Paul Spielau
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Patent number: 4868147Abstract: A calcined and shaped alumina, exhibiting a stabilized, high pore volume and a low surace area together with high strength, is made from an alumina, such as pseudoboehmite or chi-rho-eta alumina or mixtures of different alumina species. The stabilized product exhibits a total porosity of at least about 0.4 cc/g, a surface area within the range of about 2-20 m.sup.2 /g. The porosity is stabilized by treatment of the alumina, prior to calcination, with a combination of silica and an inorganic fluoride. The stabilized alumina product can be readily utilized as an adsorbent or a catalyst support, particularly in applications where the catalyst is subjected to high temperatures.Type: GrantFiled: April 1, 1988Date of Patent: September 19, 1989Assignee: LaRoche Chemicals, Inc.Inventors: Michael J. Pearson, William A. Belding
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Patent number: 4847225Abstract: Catalytic compositions which comprise alumina bound spinel and/or spinel-mullite mixtures having an alkali metal content of below about 0.50 weight percent, preferably below about 0.10. The compositions are obtained by calcining a caustic leaching preformed particulate composites of clay and alumina sol, preferably chlorhydrol. The catalysts are particularly useful for the catalytic cracking of heavy hydrocarbon feedstocks to obtain gasoline and light cycle oil. When used for cracking feedstocks high in vanadium content these compositions may contain added alkaline earth oxide in order to passivate the vanadium.Type: GrantFiled: March 9, 1988Date of Patent: July 11, 1989Assignee: W. R. Grace & Co.-Conn.Inventor: Roger J. Lussier
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Patent number: 4808297Abstract: By use of a slurry mixture described herein, catalyst particles or other similar particles can be transferred over considerable temperature differential without breaking or crumbling.By selecting a carrier fluid with a combination of high critical temperature and low critical pressure relative to the conditions under which the particles will function, a slurry mixture is provided which protects the contained particles against breakage.Type: GrantFiled: October 30, 1987Date of Patent: February 28, 1989Assignee: Chevron Research CompanyInventor: Hong C. Chen
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Patent number: 4794100Abstract: An improved process for the production of a contact agent comprising digesting a reducible oxide of at least one metal, the oxide of which forms a reduced metal oxide, and a support in the presence of a silicon component, drying the precipitate of the reducible oxide and calcining the precipitate to form the contact agent.Type: GrantFiled: May 28, 1985Date of Patent: December 27, 1988Assignee: Atlantic Richfield CompanyInventor: E. William Breder, Jr.
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Patent number: 4774217Abstract: A catalytic structure for cleaning exhaust gas from automobiles, etc., is provided. The catalytic structure comprises a ceramic carrier having a three-dimensional network skeleton forming the intercommunicating voids therein and a catalyst-carried activated alumina layer formed on the surface of the three-dimensional network skeleton. This catalytic structure is produced by contacting a ceramic carrier with a catalyst-containing solution and drying the carrier by evaporating the solvent in the solution so that the catalyst will be carried at a higher density in the activated alumina layer on the side of the skeleton surface against which side the incoming exhaust gas does not impinge, than on the side against which the exhaust gas impinges.Type: GrantFiled: June 12, 1986Date of Patent: September 27, 1988Assignee: Nippondenso Co., Ltd.Inventors: Akira Takeuchi, Yukihisa Takeuchi, Hitoshi Yoshida, Kazuyuki Ito
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Patent number: 4720475Abstract: Amorphous, substantially spherical silica particles obtained by acidic hydrolysis of substantially spherical synthetic crystalline calcium silicates having a size of from 20 to 120 microns are coated with a layer comprising silica and alumina. The silica particles obtained may be directly employed as catalysts for the oligomerization of olefins and, having been loaded with platinum, as hydrocracking catalysts.Type: GrantFiled: October 20, 1986Date of Patent: January 19, 1988Assignee: Redco N.V.Inventors: Octavian Anton, Dirk Van Wouwe, Georges Poncelet, Pierre Jacobs, Johan Martens
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Patent number: 4497907Abstract: Disclosed are novel catalyst support compositions and novel catalyst based thereon as well as methods for preparing same. The novel support compositions are prepared by coprecipitating aluminum ions and silicate ions in the presence of solid porous particles. One method for preparing the novel catalyst of the invention is to coprecipitate at least one catalytically active metal during the coprecipitation of the solid support composition. In preferred embodiments of the present invention the catalytically active metal is from Group VIII of the Periodic Table of the Elements, preferably nickel, and/or cobalt, and the resulting catalyst can optionally contain one or more metals from either Group IB or IIA of the Periodic Table of the Elements.Type: GrantFiled: June 16, 1982Date of Patent: February 5, 1985Assignee: Exxon Research & Engineering Co.Inventors: Albert P. Halluin, Allan E. Barnett
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Patent number: 4464481Abstract: A process is provided for the hydrocracking of a hydrocarbon charge stock which comprises reacting the charge stock with hydrogen at hydrocracking conversion conditions in contact with a catalytic composite comprising a combination of a Group VIB metal component, Group VIII metal component, and a fluorine component present in an amount ranging from 1 to 3 wt. %, on an elemental basis, based on the composite, with a silica-thoria carrier material wherein the carrier is cogelled silica-thoria consisting of from about 25% to about 99% by weight silica and from 1% to about 75% by weight thoria.A hydrocracking catalyst is also provided which comprises a combination of a nickel component, a tungsten component, and a fluorine component with a silica-thoria carrier material. The nickel, tungsten, and fluorine components are present in amounts sufficient to result in the composite containing, on an elemental basis, about 0.5 to about 2 wt. % of the nickel component, about 0.5 to about 14 wt.Type: GrantFiled: August 25, 1983Date of Patent: August 7, 1984Assignee: UOP Inc.Inventors: Lee Hilfman, Mark J. O'Hara
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Patent number: 4447351Abstract: The present invention relates to a method of preparing an alumina hydrosol from an aluminum sulfate solution. The subject method comprises the steps of admixing a stoichiometric amount of a metal selected from the group consisting of calcium, strontium and/or barium in the form of a mixture of a hydrated chloride metal salt and a metal hydroxide with an aqueous aluminum sulfate solution, filtering the resulting metal sulfate precipitate from the above admixture, recovering a substantially sulfur-free aluminum-containing filtrate solution, admixing aluminum metal with the filtrate solution, and digesting the aluminum metal at digestion conditions with the filtrate solution to form an alumina hydrosol possessing the desired Al:Cl weight ratio.Type: GrantFiled: January 12, 1983Date of Patent: May 8, 1984Assignee: UOP Inc.Inventor: Tai-Hsiang Chao