Heavy Metal Containing Catalyst Utilized Patents (Class 549/533)
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Patent number: 6825366Abstract: The invention is directed towards a process for the epoxidation of olefins, using molecular oxygen and hydrogen, characterized in that, as catalyst, a compound comprising gold, preferably in nanometer size, on a support material, in which the support material is comprised of Scandium, Yttrium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium is applied, and a compound comprising gold, preferably in nanometer size, on a support material, in which the support material is comprised of Scandium, Yttrium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium, a process for the preparation of said compounds and a method of catalyzing a chemical reaction through conducting said chemical reaction in the presence of said compound.Type: GrantFiled: August 6, 2002Date of Patent: November 30, 2004Assignee: Bayer AktiengesellschaftInventors: A. H. Derek Cunningham, Harry Zumaqué, Daniel-Gordon Duff, Stephan Völkening, Georg Wiessmeier
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Publication number: 20040198992Abstract: A catalyst composition comprising a support having a surface area of at least 500 m2/kg, and deposited on the support:Type: ApplicationFiled: March 31, 2004Publication date: October 7, 2004Inventors: Marek Matusz, Michael Alan Richard, Martin Lysle Hess
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Publication number: 20040192947Abstract: The invention concerns a heat-stable mesostructured material, for use as heterogeneous catalyst, wherein the mesostructured walls comprise: (a) a mineral matrix; and (b) dispersed within said mineral matrix (a), particles of nanometric dimensions based on at least a rare earth T and on at least a transition element M different from said rare earth. The invention also concerns a method for obtaining such a material.Type: ApplicationFiled: May 14, 2004Publication date: September 30, 2004Inventors: Jean-Yves Chane-Ching, Sylvaine Neveu, Anne-Marie Le Govic
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Publication number: 20040176620Abstract: A process of preparing a catalyst comprising gold on a titanium-containing support. The method involves impregnating a support with a gold compound, a reducing agent, and optionally a promoter metal, wherein the reducing agent and/or the support contains titanium, and optionally heating the impregnated support. The catalyst is useful in the hydro-oxidation of olefins, such as propylene, with oxygen in the presence of hydrogen to olefin oxides, such as propylene oxide.Type: ApplicationFiled: March 15, 2004Publication date: September 9, 2004Inventors: Alex Kuperman, Robert G. Bowman, Howard W. Clark, George E. Hartwell, Garmt R. Meima
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Publication number: 20040176619Abstract: Novel ruthenium catalysts can be obtained by:Type: ApplicationFiled: December 11, 2003Publication date: September 9, 2004Inventors: Dominic Vanoppen, Melanie Maas-Brunner, Ulrich Kammel, Jan-Dirk Arndt
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Publication number: 20040176621Abstract: This invention relates to a process for the production of a composition containing gold and/or silver particles, mixed oxides containing titanium and silicon which have been surface-modified, to the compositions producible in this process and to the use thereof in processes for the selective oxidation of hydrocarbons in the presence of oxygen and a reducing agent. The catalytically active compositions exhibit constantly high selectivities and productivities.Type: ApplicationFiled: March 22, 2004Publication date: September 9, 2004Inventors: Markus Weisbeck, Christoph Schild, Gerhard Wegener, Georg Wiessmeier
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Publication number: 20040167342Abstract: Epoxidation catalyst based on titanium zeolite in the form of extruded granules. Use of this catalyst in the synthesis of epoxides, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reacting an olefinic compound, preferably allyl chloride or propylene, with a peroxide compound, preferably hydrogen peroxide. Process for the preparation of an epoxide, preferably 1,2-epoxy-3-chloropropane or 1,2-epoxypropane, by reacting an olefinic compound, preferably allyl chloride or propylene, with a peroxide compound, preferably hydrogen peroxide, in the presence of the aforementioned catalyst.Type: ApplicationFiled: March 2, 2004Publication date: August 26, 2004Inventors: Michel Strebelle, Jean-Pierre Catinat
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Publication number: 20040158085Abstract: The invention relates to a process for the preparation of an epoxidation catalyst which process involves (a) drying a silica gel carrier having a weight average particle size of from 0.1 mm to 2 mm at a temperature of from more than 200° C. to 300° C., and (b) contacting the carrier obtained in step (a) with a gas stream containing titanium halide to obtain an impregnated carrier, and the use of such catalyst in the preparation of alkylene oxide.Type: ApplicationFiled: November 24, 2003Publication date: August 12, 2004Inventors: Jan Karel Frederik Buijink, Frank Joan Janssen
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Publication number: 20040158086Abstract: One aspect of the invention relates to a catalyst composite containing an extruded catalyst support containing an extruded activated carbonaceous material having specifically a defined pore structure. For example, the extruded activated carbonaceous material may have pores wherein at least about 40% of total Hg porosity occurs in pores having a diameter of about 200 Å and larger. Alternatively the extruded activated carbonaceous material may have a first set of pores having a pore diameter of at least about 40 Å and at most about 100 Å with a porosity of at least about 0.15 cc/g, and a second set of pores having a pore diameter of at least about 5,000 Å and at most about 20,000 Å with a porosity of at least about 0.3 cc/g.Type: ApplicationFiled: February 4, 2004Publication date: August 12, 2004Inventor: James Ferguson White
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Patent number: 6768013Abstract: A novel process for the direct oxidation of hydrogen and hydrocarbons is disclosed, where the explosion risks inherent in gas phase oxidations are substantially eliminated. Gaseous oxidation reactants are soluble in a first reaction solvent phase such as a perfluorocarbon (e.g. C8F18) and the oxidation product is preferentially soluble in a second product solvent phase such as water or a dilute acid. A solid catalyst such as palladium on alumina is then contacted with the dissolved reactants. The oxidation product such as hydrogen peroxide may be separated from the reaction solvent phase by extraction into the immiscible product solvent phase and then separated from it by distillation, thereby allowing re-use of the aqueous phase. The present invention may be carried out using a two-phase reaction system whereby both the reaction solvent and product solvent are contained within a reaction vessel into which the solid catalyst is slurried and mechanically agitated to promote the reaction.Type: GrantFiled: June 15, 2001Date of Patent: July 27, 2004Assignee: UOP LLCInventor: Peter R. Pujado
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Patent number: 6762310Abstract: The invention provides a process for the catalytic epoxidation of an alkene comprising a transition metal substituted polyoxofluorometalate and molecular oxygen with the alkene. The invention also includes transition metal substituted polyoxofluorometalates of the formula Qq[NaH2(TM)(H2O)M17F6O55]q and the molecular structure depicted in FIG. 1, where M is Mo, W, Nb, V or combinations thereof, TM is selected from Ti, V, Cr, Mn Fe, Co, Ni, Cu, Zn and the noble metals Ru, Pd, Rh, Ir, Os and Pt,, and Q is a countercation countering the charge q−, and a process for preparing such polyoxofluorometalates.Type: GrantFiled: March 25, 2003Date of Patent: July 13, 2004Assignees: Yissum Research Development Company of Hebrew University of Jersualem, Yeda Research and Development Company Ltd.Inventors: Ronny Neumann, Alexander Khenkin, Revital Ben-Daniel
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Publication number: 20040133019Abstract: The present invention relates to a catalyst containing gold in elemental or bound form and molybdenum in oxidation state +VI, and to a process for the oxidation of a hydrocarbon containing at least one double bond to an epoxide, which process involves reacting the hydrocarbon with oxygen in the presence of hydrogen and in the presence of the catalyst according to the invention.Type: ApplicationFiled: October 10, 2003Publication date: July 8, 2004Inventors: Markus Dugal, Markus Weisbeck, Gerhard Wegener
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Publication number: 20040116723Abstract: The invention relates to a process for the preparation of an epoxidation catalyst, which process involves impregnating a silicon containing carrier with a gas stream consisting of titanium halide. The invention also relates to a process for the preparation of alkylene oxide using such catalyst.Type: ApplicationFiled: November 24, 2003Publication date: June 17, 2004Inventors: Johannes Petrus Van Der Linden, Eduardus Petrus Simon Schouten
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Patent number: 6740764Abstract: Oxide comprising at least the elements Si and Ti, at least noncrystalline silicon dioxide and at least one crystalline silicate phase which has at least one zeolite structure, with noncrystalline silicon dioxide being applied to at least one crystalline silicate phase having at least one zeolite structure, wherein the oxide has no silicon-carbon bonds.Type: GrantFiled: May 9, 2002Date of Patent: May 25, 2004Assignee: BASF AktiengesellschaftInventors: Yi Chen, Weiping Ding, Yuan Chun, Ma Lian, Ulrich Müller
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Publication number: 20040097746Abstract: The present invention concerns a catalyst containing manganese in elemental or in combined form and containing an element selected from lithium, sodium, potassium, rubidium, cesium, beryllium, magnesium, calcium, strontium, barium and zinc in elemental or combined form together with a process for producing this catalyst and a process for oxidizing hydrocarbons to epoxides in the presence of the inventive catalyst.Type: ApplicationFiled: October 31, 2003Publication date: May 20, 2004Inventors: Markus Dugal, Andreas Wegner
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Publication number: 20040092757Abstract: A crystalline titanosilicate catalyst which is usable as a catalyst in the oxidation reaction of a compound having a carbon-carbon double bond and at least one other functional group, a process for producing the catalyst, and a process for producing an oxidized compound by an oxidation reaction using the catalyst. It has been found that a crystalline titanosilicate having a structural code of MWW effectively functions as a catalyst in an oxidation reaction of a compound having a carbon-carbon double bond and at least one other functional group wherein the carbon-carbon double bond of the compound is oxidized by using a peroxide as an oxidizing agent, thereby to highly selectively provide an intended oxidized compound.Type: ApplicationFiled: October 27, 2003Publication date: May 13, 2004Applicant: SHOWA DENKO K.K.Inventors: Wataru Oguchi, Katsuyuki Tsuji, Takashi Tatsumi, Peng Wu
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Publication number: 20040059139Abstract: Large crystals of titanium silicalite or intergrowths of intergrown smaller crystals, having a mean particle size greater than 2 &mgr;m, have been found catalytically effective at commercially reasonable rates for the epoxidation of olefins in the presence of hydrogen peroxide. Crystals synthesized with a silica source having a low sodium content exhibit high levels of production and selectivity. The crystals have a low attrition rate and are easily filterable from a product stream.Type: ApplicationFiled: September 20, 2002Publication date: March 25, 2004Inventors: Bernard Cooker, Wilson H. Onimus, Jennifer D. Jewson, Ralph M. Dessau
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Patent number: 6710194Abstract: Propylene oxide is produced by liquid phase reaction of propylene oxygen and hydrogen in contact with a solid epoxidation catalyst at elevated temperature and pressure, the reaction conditions being regulated to provide a weight ratio of dissolved oxygen to dissolved hydrogen in the liquid reaction mixture of at least 16.Type: GrantFiled: January 23, 2003Date of Patent: March 23, 2004Assignee: ARCO Chemical Technology, L.P.Inventors: Robert N. Cochran, Prakash G. Balan, Mark A. Liepa, Bernard Cooker
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Publication number: 20030204101Abstract: Highly selective and productive epoxidation catalysts are prepared by combining a titanium zeolite, palladium, and a gold promoter. The resulting materials are useful catalysts for transforming olefins to epoxides in the reaction of an olefin, hydrogen, and oxygen.Type: ApplicationFiled: May 9, 2003Publication date: October 30, 2003Applicant: ARCO CHEMICAL TECHNOLOGY, L.P.Inventors: Jennifer D. Jewson, C. Andrew Jones, Ralph M. Dessau
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Publication number: 20030191328Abstract: The invention relates to a method for the epoxidation of hydrocarbons using oxygen. Said method is characterized in that it is carried out in the presence of a mixture containing at least two metals from the group Cu, Ru, Rh, Pd, Os, Ir, Pt, Au, In, Tl, Mn, Ce on a support with a BET surface area of less than 200 m2/g. The invention also relates to the use of a mixture containing at least two metals from the group Cu, Ru, Rh, Pd, Os, Ir, Pt, Au, In, Tl, Mn, Ce on a support with a BET surface area of less than 200 m2/g for the epoxidation of hydrocarbons.Type: ApplicationFiled: November 14, 2002Publication date: October 9, 2003Inventors: Ursula Jansen, Georg Wiessmeier
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Publication number: 20030181739Abstract: The invention provides a process for the catalytic epoxidation of an alkene comprising contacting a transition metal substituted polyoxofluorometalate and molecular oxygen with said alkene.Type: ApplicationFiled: March 25, 2003Publication date: September 25, 2003Applicants: Yeda Research and Development Company Ltd., Yissum Research Development Company of the Hebrew University of JerusalemInventors: Ronny Neumann, Alexander Khenkin, Revital Ben-Daniel
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Patent number: 6624318Abstract: The present invention relates to a process for the reaction of at least one organic compound with one oxygen-delivering substance, for example a hydroperoxide, in the presence of at least one catalyst containing a metal-organic framework material comprising pores and a metal ion and an at least bidentate organic compound, said bidentate organic compound being coordinately bound to the metal ion. Further, the present invention is directed to the products being obtainable by the process according to the invention.Type: GrantFiled: May 30, 2002Date of Patent: September 23, 2003Assignees: BASF Aktiengesellschaft, The Regents of the University of MichiganInventors: Ulrich Müller, Lisa Lobree, Michael Hesse, Omar M. Yaghi, Mohamed Eddaoudi
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Publication number: 20030171604Abstract: The present invention provides a catalyst capable of producing an epoxy compound in high yield and improving the utilization efficiency of the oxidizing agent as well as a method of producing an epoxy compound using that catalyst.Type: ApplicationFiled: March 7, 2003Publication date: September 11, 2003Inventors: Noritaka Mizuno, Yasutaka Sumida, Koji Yonehara, Masahiro Wada, Minoru Urata
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Patent number: 6617465Abstract: A process for the catalytic epoxidation of olefins by means of hydrogen peroxide and a titanium zeolite catalyst, wherein the epoxidation reaction is carried out in a reaction system through which the reaction mixture flows continuously and the regeneration of deactivated catalyst is carried out by means of hydrogen peroxide in the presence of the olefin while continuing the epoxidation reaction.Type: GrantFiled: January 8, 2002Date of Patent: September 9, 2003Assignee: Degussa AGInventors: George Thiele, Willi Hofen, Jörg Sauer, Thomas Haas
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Patent number: 6610864Abstract: The selective epoxidation of cis double bonds of macrocyclic aliphatic hydrocarbons having 8 to 20 ring carbon atoms occurs by a catalytic process. The macrocyclic aliphatic hydrocarbons may optionally contain one or more side chains and in which at least one further trans double bond is simultaneously present. The used catalyst system consists of a cationic phase-transfer catalyst and an anionic polyoxometallate which is a polytungstate or a polymolybdate. Additionally, it comprises one or more elements selected from germanium, tin, lead, arsenic, antimony, bismuth, selenium, tellurium and polonium, and optionally one or more transition metals from group 4 to 12 of the Periodic Table.Type: GrantFiled: November 5, 2001Date of Patent: August 26, 2003Assignee: Degussa AGInventors: Bernt Krebs, Elisabeth Droste, Markus Piepenbrink, Guido Vollmer, Georg Oenbrink, Thomas Schiffer
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Patent number: 6603027Abstract: The invention relates to a catalyst obtained by deposition of a zeolite of TS-1 type on an inert honeycomb-shaped support which can be used in liquid-phase reactions for the epoxidation of olefins under the action of hydrogen peroxide.Type: GrantFiled: May 31, 2000Date of Patent: August 5, 2003Assignee: Solvay SAInventors: Jean-Pierre Catinat, Michel Strebelle
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Patent number: 6573394Abstract: The invention provides a process for the catalytic epoxidation of an alkene comprising contacting a transition metal substituted polyoxofluorometalate and molecular oxygen with said alkene.Type: GrantFiled: September 7, 2001Date of Patent: June 3, 2003Assignees: Yissum Research Development Company of Hebrew University of Jerusalem, Yeda Research and Development Company Ltd.Inventors: Ronny Neumann, Alexander Khenkin, Revital Ben-Daniel
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Publication number: 20030100778Abstract: The invention is directed towards a process for the epoxidation of olefins, using molecular oxygen and hydrogen, characterized in that, as catalyst, a compound comprising gold, preferably in nanometer size, on a support material, in which the support material contain one or more element(s) from the lanthanoide series is applied, and a compound comprising gold, preferably in nanometer size, on a support material, in which the support material contain one or more element(s) selected from metals having the atomic number 58-71 of which Cerium and Neodymium are excluded, a process for the preparation of said compounds and a method of catalyzing a chemical reaction comprising conducting said chemical reaction in the presence of said compound.Type: ApplicationFiled: September 25, 2002Publication date: May 29, 2003Inventors: A.H. Derek Cunningham, Harry Zumaque
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Publication number: 20030092921Abstract: A catalyst comprises a titanium-containing oxide and gold deposited by deposition-precipitation on the oxide in a gold-bearing solution where the solution and the oxide are centrifuged to separate out the catalyst. The catalyst is used in oxidation of an olefin by contacting the olefin with a reaction gas and the catalyst which is heated in the reaction gas to a reaction temperature at a controlled heating rate to avoid agglomeration of gold species.Type: ApplicationFiled: May 30, 2002Publication date: May 15, 2003Inventors: Eric E. Stangland, William Nicholas Delgass, Ronald P. Andres
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Publication number: 20030073856Abstract: Propylene oxide is formed by reaction of hydrogen, oxygen, and propylene over a solid catalyst such as Pd on TS-1, the reaction being carried out in carbon dioxide solvent at conditions effective to provide a dense phase reaction mixture.Type: ApplicationFiled: October 16, 2001Publication date: April 17, 2003Inventors: Dan Hancu, Eric John Beckman, Tiberiu Danciu
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Publication number: 20030060643Abstract: The invention is directed towards a process for the epoxidation of olefins, using molecular oxygen and hydrogen, characterized in that, as catalyst, a compound comprising gold, preferably in nanometer size, on a support material, in which the support material contain one or more element(s) selected from the group consisting of Scandium, Yurium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium is applied, and a compound comprising gold, preferably in nanometer size, on a support material, in which the support material contain one or more element(s) selected from the group consisting of Scandium, Yttrium, Lanthanide, Zirconium, Hafnium, Vanadium, Niobium, Tantalum, Chromium, Molybdenum and/or Tungsten and is essentially free of titanium, a process for the preparation of said compounds and a method of catalyzing a chemical reaction through conducting said chemical reaction in the presence of said compound.Type: ApplicationFiled: August 6, 2002Publication date: March 27, 2003Inventors: A. H. Derek Cunningham, Harry Zumaque, Daniel-Gordon Duff, Stephan Vlkening, Georg Wiessmeier
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Patent number: 6500967Abstract: To provide an epoxide-production-use catalyst that is suitably used for producing an epoxide by partial oxidation of an unsaturated hydrocarbon, a catalyst in accordance with the present invention is obtained by fixing gold fine particles to a carrier containing an oxide containing at least one of titanium and zirconium, and has an acid quantity of not more than 0.1 mmol/g determined by the NH3-TPD method. Such a catalyst for epoxide producing use can be produced by, for instance, fixing gold fine particles to a carrier having an acid quantity of not more than 0.15 mmol/g. The catalyst for epoxide producing use arranged as above is preferably used as a catalyst in partial oxidation of an unsaturated hydrocarbon to produce a corresponding epoxide.Type: GrantFiled: February 21, 2001Date of Patent: December 31, 2002Assignee: Nippon Shokubai Co., Ltd.Inventors: Toshio Hayashi, Masahiro Wada, Takahiro Inagaki
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Patent number: 6498259Abstract: The liquid-phase epoxidation reaction of an olefin with hydrogen and oxygen in the presence of a catalyst mixture containing a titanium zeolite and a supported catalyst surprisingly produces less ring-opened products such as glycols when performed in the presence of a buffer. This is particularly surprising because a typical palladium on titanium zeolite catalyst is little effected by the presence of a buffer. Surprisingly, the use of a buffer also typically improves the activity of the process.Type: GrantFiled: October 19, 2001Date of Patent: December 24, 2002Assignee: Arco Chemical Technology L.P.Inventors: Roger A. Grey, C. Andrew Jones
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Patent number: 6441204Abstract: The invention is a liquid-phase process for epoxidizing an olefin with hydrogen and oxygen in the presence of a catalyst mixture comprising a titanium zeolite and a supported catalyst comprising palladium on niobium-containing support. The process is highly selective and productive for transforming olefins to epoxides in the liquid-phase reaction of an olefin, hydrogen, and oxygen.Type: GrantFiled: October 19, 2001Date of Patent: August 27, 2002Assignee: Arco Chemical Technology, L.P.Inventor: Roger A. Grey
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Patent number: 6441203Abstract: The invention is a liquid-phase process for epoxidizing an olefin with hydrogen and oxygen in the presence of a supported catalyst comprising palladium on niobium-containing support. The process exhibits good productivity and selectivity for olefin epoxidation with hydrogen, and oxygen. This is particularly surprising because typical palladium-containing epoxidation catalysts require the presence of a titanium zeolite.Type: GrantFiled: October 19, 2001Date of Patent: August 27, 2002Assignee: Arco Chemical Technology, L.P.Inventor: Roger A. Grey
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Patent number: 6429323Abstract: Alkene oxides are produced in a continuous integrated two-,step process performed in liquid phase. Step I comprises the oxidation of a secondary alcohol with molecular oxygen to generate hydrogen peroxide at moderate temperature and pressure. This reaction mixture is introduced directly to an olefinic substrate maintained in organic solvent at elevated pressure. During step II of the procedure the olefins undergo epoxidation by the hydrogen peroxide in the presence of a catalyst of titanium-impregnated, amorphous silica. The integrated process requires no intermediate purification or enrichment step and it is particularly well adapted to the production of propylene oxide.Type: GrantFiled: June 21, 2000Date of Patent: August 6, 2002Assignee: Repsol Quimica, S.A.Inventors: Ma Pilar De Frutos Escrig, Ana Padilla Polo, Jose Migel Campos Martin
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Patent number: 6417378Abstract: The invention is a process for epoxidizing an olefin with hydrogen and oxygen in the presence of a catalyst comprising a noble metal and pretreated titanium zeolite. Titanium zeolite pretreatment comprises contacting the titanium zeolite with a leaching agent prior to use in epoxidation. Surprisingly, the process using the pretreated titanium zeolite shows decreased ring-opening to unwanted glycols and glycol ethers.Type: GrantFiled: October 9, 2001Date of Patent: July 9, 2002Assignee: Arco Chemical Technology, L.P.Inventor: Dan Hancu
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Publication number: 20020072623Abstract: The stability of a noble metal/titanium zeolite catalyst is improved by elevated temperature calcination with an oxygen containing gas; the catalyst is useful in epoxidation involving the reaction of olefin, oxygen and hydrogen.Type: ApplicationFiled: June 4, 2001Publication date: June 13, 2002Applicant: ARCO CHEMICAL TECHNOLOGY, L.P.Inventors: Bernard Cooker, Jennifer D. Jewson, Wilson H. Onimus
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Patent number: 6399794Abstract: The invention is a process for epoxidizing an olefin with hydrogen and oxygen in the presence of a modifier and a catalyst comprising a noble metal and titanium zeolite. The modifier is (a) calcium carbonate in the presence of carbon dioxide or (b) ammonium bicarbonate. The process results in increased catalyst activity, selectivity to epoxide, and increased catalyst life.Type: GrantFiled: November 15, 2001Date of Patent: June 4, 2002Assignee: Arco Chemical Technology, L.P.Inventor: Dan Hancu
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Patent number: 6376686Abstract: The invention is an olefin epoxidation process that comprises reacting olefin, oxygen, and hydrogen in a liquid medium in the presence of an epoxidation catalyst in a reactor system comprising a tank, a tube, a plurality of impellers, and means for inhibiting flow. The reactor system facilitates transfer of the hydrogen and oxygen to the liquid medium.Type: GrantFiled: September 5, 2001Date of Patent: April 23, 2002Assignee: ARCO Chemical Technology, L.P.Inventor: Prakash G. Balan
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Patent number: 6362349Abstract: A process for the direct oxidation of an olefin by oxygen to the corresponding olefin oxide in the presence of a reducing agent and a catalyst. The catalyst comprises a metal component, such as a transition metal oxide, dispersed on a metal ion-exchanged metallosilicates, such as a Group 1 or Group 2 ion-exchanged porous aluminosilicate. Selectivity to the olefin oxide is high and the catalyst is readily regenerated.Type: GrantFiled: October 4, 2000Date of Patent: March 26, 2002Assignee: The Dow Chemical CompanyInventors: Alex Kuperman, Robert G. Bowman, Howard W. Clark, George E. Hartwell
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Patent number: 6348607Abstract: In a process for oxidizing an organic compound containing at least one C—C double bond, or a mixture of two or more thereof, which comprises the step (II) below: (II) reaction of the organic compound or the mixture of two or more thereof with a medium comprising molecular oxygen in the presence of a heterogeneous catalyst, the medium further comprises carbon monoxide (CO).Type: GrantFiled: April 16, 2001Date of Patent: February 19, 2002Assignee: BASF AktiengesellschaftInventors: Ulrich Müller, Georg Heinrich Grosch, Bernd Stein, Norbert Rieber
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Patent number: 6326502Abstract: The present invention provides a process for the epoxidation of alkenes of the formula (1) where R1, R2, R3 and R4 are, independently of one another, hydrogen, C1-C20-alkyl, C1-C12-alkoxy, C6-C10-aryl, —CHOH—CH3, —CH—NH2—CH3 or carboxy, using air or oxygen over a catalyst comprising compounds of the formula (2) MoxOy(L)z (2) where x is 1, 2 or 3, y is an integer from 0 to 2x+1, z is an integer from 1 to 2x, where the ligand L is a compound of the formula (3) or (4) where X is a nitrogen, oxygen or sulfur atom, Y is hydrogen, C1-C8-alkyl, C1-C8-alkoxy, F, Cl, Br, I, COOCH3, C6-C14-aryl or C3-C8-cycloalkyl, R7 and R8 form a ring containing from 4 to 8 carbon atoms onto which one or two aromatic rings may be fused, R5 and R6 are hydrogen, branched or straight-chain C1-C12-alkyl or branched or straight-chain C1-C12-haloalkyl which are substituents on the ring formed by R7 and R8 and/or the rings fused onto this ring, or tType: GrantFiled: January 7, 2000Date of Patent: December 4, 2001Assignee: Aventis Research & Technologies GmbH & Co. KGInventors: Rolf Peter Schulz, Uwe Dingerdissen, Wolfgang Anton Herrmann, Gerhard Lobmaier
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Patent number: 6310224Abstract: In a process for the production of an oxirane compound by reaction of olefins, oxygen and hydrogen using a noble metal on titanium or vanadium silicalite catalyst the improvement wherein the catalyst is doped with a substantially non-reduced metal dopand.Type: GrantFiled: January 19, 2001Date of Patent: October 30, 2001Assignee: ARCO Chemical Technology, L.P.Inventor: Roger A. Grey
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Patent number: 6303800Abstract: Process for preparing propene oxide, in which a mixture of propene and oxygen or an oxygen-containing gas is reacted at a temperature in the range from 150 to 500° C., in the presence or absence of a catalyst, in a reactor, wherein all or part of the interior of the reactor is lined with inert materials. The inert material used is at least one of the materials of the following group: one or more noble metals of transition group VIII of the Periodic Table, in particular gold, titanium and tantalum, glass, enamel, quartz, ceramic and Teflon. The selectivity to propene oxide is >60%.Type: GrantFiled: July 14, 2000Date of Patent: October 16, 2001Assignee: Aventis Research & Technologies GmbH & Co KGInventors: Uwe Dingerdissen, Holger Orzesek, Wilhelm Maier, Rolf Schulz
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Optically active epoxypropionate derivative, intermediate thereof and processes for their production
Publication number: 20010020106Abstract: An optically active epoxypropionate derivative of the following formula (1): 1Type: ApplicationFiled: February 21, 2001Publication date: September 6, 2001Inventors: Akinori Tanaka, Takumi Kagawa -
Patent number: 6281369Abstract: The stability of a noble metal/titanium zeolite catalyst is improved by elevated temperature calcination with an oxygen containing gas; the catalyst is useful in epoxidation involving the reaction of olefin, oxygen and hydrogen.Type: GrantFiled: December 7, 2000Date of Patent: August 28, 2001Assignee: Arco Chemical Technology, L.P.Inventors: Bernard Cooker, Jennifer D. Jewson, Wilson H. Onimus
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Patent number: 6255499Abstract: A process and catalyst for the hydro-oxidation of an olefin having three or more carbon atoms, such as propylene, to form an olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen under reaction conditions in the presence of hydrogen and a catalyst. The catalyst contains oxidized gold dispersed on a titanium-containing support, preferably, a support having a plurality of titanium coordination environments, for example, titanium grafted onto a titanosilicate. Selectivity to olefin oxide is high at good conversion of the olefin. The catalyst uses hydrogen efficiently and exhibits a long lifetime.Type: GrantFiled: April 7, 2000Date of Patent: July 3, 2001Assignee: The Dow Chemical CompanyInventors: Alex Kuperman, Robert G. Bowman, Howard W. Clark, George E. Hartwell, Brian J. Schoeman, Hendrik E. Tuinstra, Garmt R. Meima
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Patent number: 6229028Abstract: The invention provides a process for the catalytic epoxidation of alkene comprising contacting a transition metal substituted polyoxometalate and molecular oxygen with alkene.Type: GrantFiled: April 7, 2000Date of Patent: May 8, 2001Assignee: Yissum Research Development Company of the Hebrew University of JerusalemInventors: Ronny Neumann, Mazal Dahan
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Patent number: 6194591Abstract: An olefin epoxidation process is described. The process comprises epoxidizing an olefin with hydrogen peroxide in the presence of a modified titanium zeolite catalyst in water solvent. The titanium zeolite catalyst is modified with a platinum, palladium or copper compound. The modified catalyst unexpectedly increases olefin epoxidation activity.Type: GrantFiled: April 27, 2000Date of Patent: February 27, 2001Assignee: ARCO Chemical Technology, L.P.Inventors: Roger A. Grey, Rangasamy Pitchai