Hydrogen Patents (Class 423/584)
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Patent number: 7799225Abstract: The present invention relates to a membrane contactor assisted extraction system and method for extracting a single phase species from multi-phase working solutions. More specifically one preferred embodiment of the invention relates to a method and system for membrane contactor assisted water (MCAWE) extraction of hydrogen peroxide (H2O2) from a working solution.Type: GrantFiled: September 29, 2006Date of Patent: September 21, 2010Assignee: The United States of America as represented by the United States Department of EnergyInventors: Seth W. Snyder, Yupo J. Lin, Jamie A. Hestekin, Michael P. Henry, Peter Pujado, Anil Oroskar, Santi Kulprathipanja, Sarabjit Randhava
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Patent number: 7718158Abstract: Polymer-encapsulated ion-exchange resins are disclosed. The resins are useful in adsorption, catalysis, and other applications. Catalysts comprising a polymer-encapsulated combination of an ion-exchange resin and a transition metal are also disclosed. The catalysts are useful in hydrogenation, oxidation, hydroformylation, polymerization, and other valuable processes. Certain of the polymer-encapsulated catalysts enhance the productivity in the process for producing hydrogen peroxide from hydrogen and oxygen.Type: GrantFiled: October 13, 2005Date of Patent: May 18, 2010Assignee: Lyondell Chemical Technology, L.P.Inventors: Bi Le-Khac, Roger A. Grey
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Publication number: 20100068366Abstract: The disclosed invention relates to a process for making a multiphase mixture, comprising: flowing a first fluid stream through a process microchannel, the first fluid stream comprising at least one liquid and/or at least one gas, the process microchannel having an apertured section; flowing a second fluid stream through the apertured section into the process microchannel in contact with the first fluid stream to form the multiphase mixture, the second fluid stream comprising at least one gas and/or at least one microbody-forming material, the first fluid stream forming a continuous phase in the multiphase mixture, the second fluid stream forming a discontinuous phase dispersed in the continuous phase.Type: ApplicationFiled: November 23, 2009Publication date: March 18, 2010Inventors: Anna Lee Tonkovich, Laura J. Silva, David John Hesse, Michael Alan Marchiando, Micheal Jay Lamont, Dongming Qiu, Terrence Andrew Dritz, Kristina M. Pagnotto, Richard Stevenson, Steven T. Perry, Maddalena Fanelli, Ravi Arora, Bin Yang, Sean Patrick Fitzgerald, Timothy J. Sullivan, Kai Tod Paul Jarosch, Thomas Yuschak
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Patent number: 7678361Abstract: The present invention discloses a microreactor for performing heterogeneous catalytic reactions, being of plate or stack construction for industrial use, with provision made for chambers between the plates for the chemical reaction and for the heat removal. Inside the reaction chambers, catalyst material is applied to the internal walls or filled into recesses, and in all chambers there are spacers. In particular the slot-shaped reaction chambers have channels with a hydraulic diameter smaller than 1500 ?m and a ratio of free slot width to free slot height in the range of 10 to 450.Type: GrantFiled: March 31, 2004Date of Patent: March 16, 2010Assignees: UDHE GmbH, Deguesa AGInventors: Georg Markowz, Johannes Albrecht, Johannes Ehrlich, Michael Jucys, Elias Klemm, Armin Lange De Oliveira, Reinhard Machnik, Juergen Rapp, Ruediger Schuette, Steffen Schirrmeister, Olaf Von Morstein, Hartmut Hederer, Martin Schmitz-Niederau
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Proton conductor, single ion conductor, manufacturing methods thereof, and electrochemical capacitor
Patent number: 7670508Abstract: A proton conductor or a single ion conductor having high conductivity and a broad operation temperature range, manufacturing methods thereof and an electrochemical capacitor using it are provided. A compound having a structural part of Chemical formula 1 and a compound having a structure of Chemical formula 2 are included. X represents a protoic dissociation group, R1 represents a component including carbon, R2 and R3 represent a component including carbon or hydrogen, and n is in the range of n?1. By action of the ?NCOH group of the compound having the structure of Chemical formula 2, protons can be dissociated from the compound having the structural part of Chemical formula 1 and migrated. Therefore, water retention becomes unnecessary, and high proton conductivity can be obtained in a broad temperature range.Type: GrantFiled: November 17, 2003Date of Patent: March 2, 2010Assignee: Sony CorporationInventors: Tomitaro Hara, Ryosuke Takagi -
Patent number: 7670393Abstract: A method for causing chemical reactions between fluids, comprising the steps of arranging a plurality of metal sheets for providing first fluid flow channels adjacent to and in heat transfer contact with second fluid flow channels between adjacent ones of the metal sheets, placing catalyst material within at least some of the flow channels, passing a first fluid mixture through the first fluid flow channels and a second fluid mixture through the second fluid flow channels, wherein the first fluid mixture is different from the second fluid mixture, each fluid mixture undergoing separate reactions, one of the reactions being endothermic while the other reaction is exothermic, and causing heat to transfer between the adjacent fluid flow channels.Type: GrantFiled: November 27, 2007Date of Patent: March 2, 2010Assignee: Compactgtl PLCInventors: Michael Joseph Bowe, John William Stairmand, Ian Frederick Zimmerman, Jason Andrew Maude
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Patent number: 7666239Abstract: The present invention provides a method of synthesizing abrasive particles and methods of using the same in chemical mechanical polishing slurry applications. The nanosized abrasive particles according to the invention are produced by hydrothermal synthesis using an insoluble source of cerium. The crystallites of the particles include cerium ions and titanium ions.Type: GrantFiled: November 18, 2005Date of Patent: February 23, 2010Assignee: Ferro CorporationInventors: Xiangdong Feng, Yie-Shein Her, Yi Yang
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Patent number: 7645438Abstract: The invention relates to a process for the production of hydrogen peroxide comprising a liquid-liquid extraction step, said extraction step comprising contacting an organic feed solution containing hydrogen peroxide with an extraction solvent comprising less than about 30 wt % of water to achieve extraction of hydrogen peroxide to said extraction solvent and obtaining an extract containing hydrogen peroxide.Type: GrantFiled: June 11, 2007Date of Patent: January 12, 2010Assignee: Akzo Nobel N.V.Inventors: Rolf Edvinsson-Albers, Boris Kuzmanovic, Cornald Van Strien
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Patent number: 7632774Abstract: Supported catalysts include an inorganic solid support such as silica that is functionalized to have inorganic acid functional groups attached thereto. The functionalization of the support material is optimized by (i) limiting the amount of water present during the functionalization reaction, (ii) using a concentrated mineral acid or derivative thereof, and/or (iii) increasing the reaction temperature and/or reaction pressure. The acid-functionalized support material serves as a support for a metal nanoparticle catalyst. The nanocatalyst particles are preferably bonded to the support material through an organic molecule, oligomer, or polymer having functional groups that can bind to both the nanocatalyst particles and to the support material. The supported catalysts can advantageously be used for the direct synthesis of hydrogen peroxide from hydrogen and oxygen feed streams.Type: GrantFiled: March 30, 2006Date of Patent: December 15, 2009Assignee: Headwaters Technology Innovation, LLCInventors: Michael A. Rueter, Sukesh Parasher, Cheng Zhang, Bing Zhou
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Patent number: 7601668Abstract: Improved bi-metallic nanocatalysts are manufactured using a control agent to produce nanoparticles having a controlled crystal face exposure. The bi-metallic nanocatalyst particles are manufactured in a two-step process. In a first step, nanocatalyst particles are manufactured using the control agent and the primary metal atoms. The primary metal atoms and the control agent are reacted to form complexed metal atoms. The complexed metal atoms are then allowed or caused to form nanoparticles. The nanoparticles formed in the first step using the control agent have a desired crystal face exposure. In a second step, the secondary metal atoms are deposited on the surface of the primary metal nanoparticles. The secondary catalyst atoms maintain the same crystal face exposure as the primary metal nanoparticles.Type: GrantFiled: September 29, 2006Date of Patent: October 13, 2009Assignee: Headwaters Technology Innovation, LLCInventors: Zhenhua Zhou, Zhihua Wu, Cheng Zhang, Bing Zhou
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Patent number: 7547430Abstract: Hydrogen peroxide is prepared by an auto-oxidation method via hydrogenation in a microreactor. A working solution containing a reactive carrier compound is hydrogenated with hydrogen in a microreactor and is subsequently auto-oxidized to produce hydrogen peroxide.Type: GrantFiled: August 30, 2006Date of Patent: June 16, 2009Assignee: FMC CorporationInventors: Dalbir S. Sethi, Emmanuel A. Dada, Kevin Hammack, Xinliang Zhou
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Publication number: 20090148379Abstract: A system according to one embodiment includes a moisture trap for drying air; at least one of a first container and a second container; and a mechanism for at least one of: bubbling dried air from the moisture trap through a hydrogen peroxide solution in the first container for producing a hydrogen peroxide vapor, and passing dried air from the moisture trap into a headspace above a hydrogen peroxide solution in the second container for producing a hydrogen peroxide vapor. A method according one embodiment includes at least one of bubbling dried air through a hydrogen peroxide solution in a container for producing a first hydrogen peroxide vapor, and passing dried air from the moisture trap into a headspace above the hydrogen peroxide solution in a container for producing a second hydrogen peroxide vapor.Type: ApplicationFiled: November 14, 2008Publication date: June 11, 2009Inventors: Adam H. Love, Joel Del Eckels, Alexander K. Vu, Armondo Alcaraz, John G. Reynolds
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Patent number: 7534741Abstract: Methods for manufacturing supported catalysts and the use of these catalysts in, e.g., the direct synthesis of hydrogen peroxide. The nanocatalyst particles are manufactured from catalyst atoms complexed with organic agent molecules (e.g., polyacrylic acid). The complexed catalyst atoms are heated to cause formation of the nanocatalyst particles. The temperature used to cause formation of the particles is typically greater than 30° C., preferably greater than 50° C, and more preferably greater than 70° C.Type: GrantFiled: February 9, 2007Date of Patent: May 19, 2009Assignee: Headwaters Technology Innovation, LLCInventors: Zhihua Wu, Zhenhua Zhou, Michael Rueter, Bing Zhou
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Patent number: 7514476Abstract: Metal-containing colloids are manufactured by reacting a plurality of metal ions and a plurality of organic agent molecules to form metal complexes in a mixture having a pH greater than about 4.25. The metal complexes are reduced for at least 0.5 hour to form stable colloidal nanoparticles. The extended reduction time improves the stability of the colloidal particles as compared to shorter reduction times. The stability of the colloidal particles allows for colloids with higher concentrations of metal to be formed. The concentration of metal in the colloid is preferably at least about 150 ppm by weight.Type: GrantFiled: March 17, 2006Date of Patent: April 7, 2009Assignee: Headwaters Technology Innovation, LLCInventors: Sukesh Parasher, Cheng Zhang, Michael A. Rueter, Bing Zhou
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Publication number: 20090074611Abstract: The present invention is directed to a photolytic hydrogen peroxide generator (10); the photolytic hydrogen peroxide generator converts water to activated oxygen for electrolyte absorption, regulates pH, removes hydrogen and other gases; the photolytic hydrogen peroxide generator includes a photolytic cell (16) where chemical reactions occur.Type: ApplicationFiled: September 15, 2006Publication date: March 19, 2009Applicant: Battelle Memorial InstituteInventors: Bruce F. Monzyk, Richard J. Gilbert
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Patent number: 7501532Abstract: A process comprising reacting hydrogen and oxygen in the presence of a noble metal, a thiol or thiolate, and a solvent is disclosed. The thiol or thiolate improves the hydrogen peroxide yield. The produced hydrogen peroxide may be used to oxidize organic compounds in the presence of an oxidation catalyst.Type: GrantFiled: November 20, 2007Date of Patent: March 10, 2009Assignee: Lyondell Chemical Technology, L.P.Inventor: Bi Le-Khac
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Patent number: 7473412Abstract: Process for the purification of aqueous peroxygen solutions comprising the treatment of an aqueous peroxygen solution with (a) at least one membrane purification step, (b) optionally at least one ion exchange purification step, (c) optionally at least one dilution step, and (d) at least one other purification step, all of which can be conducted in any sequence. Aqueous peroxygen solutions having a TOC level of less than 1 mg/kg can be obtained by this process. They can be used in the manufacture of semiconductors.Type: GrantFiled: October 1, 2004Date of Patent: January 6, 2009Assignee: Solvay (Société Anonyme)Inventors: Robert Owen, Juergen Bosse, Michael Sell
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Patent number: 7470800Abstract: Catalysts useful for epoxidizing olefins are disclosed. The catalysts comprise a vinylpyridine polymer and a titanium zeolite. Preferably, the vinylpyridine polymer encapsulates the titanium zeolite. The catalysts are easy to prepare and use, they are easy to recover and reuse, and they convert olefins to epoxides in good yields with high selectivity. Surprisingly, ring-opening reactions that form glycol or glycol ether by-products are minimized by using the vinylpyridine polymer-containing catalysts. The catalysts are valuable for making propylene oxide from propylene and hydrogen peroxide. Vinylpyridine polymer-encapsulated transition metals and their use to produce hydrogen peroxide from hydrogen and oxygen is also disclosed.Type: GrantFiled: August 7, 2007Date of Patent: December 30, 2008Assignee: Lyondell Chemical Technology, L.P.Inventor: Bi Le-Khac
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Publication number: 20080305033Abstract: A catalyst effective for the direct reaction of hydrogen and oxygen to form hydrogen peroxide includes particles of gold, palladium or, preferably, gold and palladium deposited upon an acid-washed support. High selectivity to and production of hydrogen peroxide is observed, with low hydrogen peroxide decomposition. The catalysts have extended lifespan.Type: ApplicationFiled: July 10, 2006Publication date: December 11, 2008Applicant: UNIVERSITY COLLEGE CARDIFF CONSULTANTS LIMITEDInventors: Albert Frederick Carley, Jennifer Kelly Edwards, Graham John Hutchings, Benjamin Eduardo Solsona Espriu
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Publication number: 20080299034Abstract: The present invention relates to a process for preparing hydrogen peroxide by reacting hydrogen and oxygen in the presence of a solvent and of a catalyst, wherein the catalyst comprises at least one noble or semi-noble metal supported on an inorganic material functionalized with acid groups. The invention also refers to the catalyst used in this process.Type: ApplicationFiled: May 30, 2008Publication date: December 4, 2008Applicant: Repsol YPF, S.A.Inventors: Pilar De Frutos Escrig, Jose Manuel Riesco Garcia, Jose Miguel Campos Martin, Jose Luis Garcia Fierro, Encarnacion Cano Serrano, Gema Blanco Brieva
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Patent number: 7442360Abstract: The present invention includes methods and apparatuses that utilize microchannel technology and, more specifically in exemplary form, producing hydrogen peroxide using microchannel technology. An exemplary process for producing hydrogen peroxide comprises flowing feed streams into intimate fluid communication with one another within a process microchannel to form a reactant mixture stream comprising a hydrogen source and an oxygen source such as, without limitation, hydrogen gas and oxygen gas. Thereafter, a catalyst is contacted by the reactant mixture and is operative to convert a majority of the reactant mixture to hydrogen peroxide that is withdrawn via an egressing product stream. During the hydrogen peroxide chemical reaction, exothermic energy is generated. This exothermic energy is absorbed by the fluid within the microchannel as well as the microchannel itself.Type: GrantFiled: April 27, 2005Date of Patent: October 28, 2008Assignee: Velocys, Inc.Inventors: Anna Lee Y. Tonkovich, Bin Yang, William Allen Rogers, Jr., Paul William Neagle, Sean P. Fitzgerald, Kai Tod Paul Jarosch, Dongming Qiu, David J. Hesse, Michael Lamont
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Publication number: 20080226497Abstract: Aqueous solution suitable for the chemical sterilization of packaging materials, process for its preparation and its use Aqueous solution suitable for the chemical sterilization of packaging materials, comprising hydrogen peroxide and at least one foodstuff-compatible stabilizer. This solution but without the stabilizer has a maximum phosphorous content expressed as PO43? of 10 mg/kg, and present a dry residue at 105° C. of at most 10 mg/kg. The same solution can be used as dip bath liquid in dip bath aseptic packaging processes and as well as spraying liquid in spray aseptic packaging processes.Type: ApplicationFiled: September 8, 2006Publication date: September 18, 2008Applicant: SOLVAY SAInventors: Werner Dotsch, Otmar Woost
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Patent number: 7422676Abstract: A device is disclosed for the generation of hydrogen peroxide. The device produces hydrogen peroxide on an as-needed basis through the use of electrolysis of water, remixing hydrogen and oxygen in an appropriate ratio, and reacting the hydrogen and oxygen in water in a reactor.Type: GrantFiled: December 20, 2005Date of Patent: September 9, 2008Assignee: UOP LLCInventors: Kurt M. Vanden Bussche, Anil R. Oroskar, Jeffery C. Bricker, Laszlo T. Nemeth, Gavin P. Towler
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Publication number: 20080193368Abstract: Methods for manufacturing supported catalysts and the use of these catalysts in, e.g., the direct synthesis of hydrogen peroxide. The nanocatalyst particles are manufactured from catalyst atoms complexed with organic agent molecules (e.g., polyacrylic acid). The complexed catalyst atoms are heated to cause formation of the nanocatalyst particles. The temperature used to cause formation of the particles is typically greater than 30° C., preferably greater than 50° C, and more preferably greater than 70° C.Type: ApplicationFiled: February 9, 2007Publication date: August 14, 2008Applicant: Headwaters Technology Innovation, LLCInventors: Zhihua Wu, Zhenhua Zhou, Michael Rueter, Bing Zhou
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Publication number: 20080181842Abstract: Hydrogen peroxide is prepared by an auto-oxidation method via hydrogenation in a microreactor. A working solution containing a reactive carrier compound is hydrogenated with hydrogen in a microreactor and is subsequently auto-oxidized to produce hydrogen peroxide.Type: ApplicationFiled: August 30, 2006Publication date: July 31, 2008Inventors: Dalbir S. Sethi, Emmanuel A. Dada, Kevin Hammack, Xinliang Zhou
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Patent number: 7399344Abstract: An apparatus and process are presented that provide for the separation of hydrogen peroxide from a solution having an acid and hydrogen peroxide.Type: GrantFiled: January 28, 2005Date of Patent: July 15, 2008Assignee: UOP LLCInventors: Lin Li, Kurt M. Vanden Bussche, Anil R. Oroskar, Sanjay N. Gandhi
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Publication number: 20080164443Abstract: Processes are disclosure which comprise alternately contacting an oxygen-carrying catalyst with a reducing substance, or a lower partial pressure of an oxidizing gas, and then with the oxidizing gas or a higher partial pressure of the oxidizing gas, whereby the catalyst is alternately reduced and then regenerated to an oxygenated state. In certain embodiments, the oxygen-carrying catalyst comprises at least one metal oxide-containing material containing a composition having one of the following formulas: (a) CexByB?zB?O?, wherein B=Ba, Sr, Ca, or Zr; B?=Mn, Co, or Fe; B?=Cu; 0.01<x<0.99; 0<y<0.6; 0<z<0.5; and 1<?<2.2; (b) SrvLawBxB?yB?zO?, wherein B=Co or Fe; B?=Al or Ga; B?=Cu; 0.01<v<1.4; 0.1<w<1.6; 0.1<x<1.9; 0.1<y<0.9; 0<z<2.2; and 3<?<5.5).Type: ApplicationFiled: September 20, 2007Publication date: July 10, 2008Applicant: ELTRON RESEARCH & DEVELOPMENT, INC.Inventors: James H. White, Erick J. Schutte, Sara L. Rolfe
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Publication number: 20080121566Abstract: A surfactant for separating bitumen from sand includes an aqueous solution of hydrogen peroxide contacted with low rank coal and additional fresh hydrogen peroxide. The low rank coal is preferably lignite. The surfactant may be used to clean bitumen, heavy oil and/or tar from sand, shale or clay at low concentrations and with mild agitation.Type: ApplicationFiled: November 24, 2006Publication date: May 29, 2008Applicant: TARSANDS RECOVERY LTD.Inventors: Pat PAGE, Jack Monkman
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Patent number: 7364718Abstract: Hydrogen peroxide is produced by reacting hydrogen and oxygen in the presence of a noble metal catalyst in a liquid reaction medium, the reaction being performed in the presence of a sulfuric acid alkyl ester. In the presence of sulfuric acid alkyl esters the noble metal catalyst exhibits a high and lasting activity for the formation of hydrogen peroxide with an elevated selectivity of hydrogen peroxide formation relative to the hydrogen used. Solutions of hydrogen peroxide in methanol obtainable by the process are suitable for use for the epoxidation of olefins.Type: GrantFiled: April 11, 2006Date of Patent: April 29, 2008Assignee: Degussa AGInventors: Thomas Haas, Robert Jahn
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Patent number: 7357909Abstract: A process for producing hydrogen peroxide from hydrogen and oxygen in the presence of a noble metal and a cationic polymer comprising a halogen-containing anion is disclosed. The cationic polymer improves hydrogen peroxide yield, and it can be easily recycled.Type: GrantFiled: June 28, 2006Date of Patent: April 15, 2008Assignee: Lyondell Chemical Technology, L.P.Inventor: Bi Le-Khac
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Publication number: 20080081017Abstract: Improved bimetallic nanocatalysts are manufactured using a control agent to produce nanoparticles having a controlled crystal face exposure. The bimetallic nanocatalyst particles are manufactured in a two-step process. In a first step, nanocatalyst particles are manufactured using the control agent and the primary metal atoms. The primary metal atoms and the control agent are reacted to form complexed metal atoms. The complexed metal atoms are then allowed or caused to form nanoparticles. The nanoparticles formed in the first step using the control agent have a desired crystal face exposure. In a second step, the secondary metal atoms are deposited on the surface of the primary metal nanoparticles. The secondary catalyst atoms maintain the same crystal face exposure as the primary metal nanoparticles.Type: ApplicationFiled: September 29, 2006Publication date: April 3, 2008Applicant: HEADWATERS NANOKINETIX, INC.Inventors: Zhenhua Zhou, Zhihua Wu, Cheng Zhang, Bing Zhou
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Patent number: 7332139Abstract: Reactions between at least two fluid reactants are performed in a reactor comprising wall elements (1), slot-shaped reaction spaces (3) and cavities (5) for conducting a fluid heat-carrier through. Depending on the process and throughput, a modular structural design is chosen wherein an arbitrary number of wall elements (1) are assembled to a right-parallelepipedal block (24), the reaction spaces (3) are formed between lateral surfaces (2) of right-parallelepipedal wall elements (1), the reactants are introduced into the reaction spaces (3) from edge regions of one side of the block (24) and are conducted through the reaction spaces (3) in parallel flows and the fluid heat-carrier is conducted through the tubular cavities (5) extending in the interior of the wall elements (1).Type: GrantFiled: August 22, 2001Date of Patent: February 19, 2008Assignee: Degussa AGInventors: Rüdiger Schütte, Torsten Balduf, Catrin Becker, Ina Hemme, Birgit Bertsch-Frank, Werner Wildner, Jürgen Rollmann, Georg Markowz
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Publication number: 20080003175Abstract: A process for producing hydrogen peroxide from hydrogen and oxygen in the presence of a noble metal and a cationic polymer comprising a halogen-containing anion is disclosed. The cationic polymer improves hydrogen peroxide yield, and it can be easily recycled.Type: ApplicationFiled: June 28, 2006Publication date: January 3, 2008Inventor: Bi Le-Khac
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Patent number: 7288240Abstract: A method for improving drastically both the selectivity and yield of hydrogen peroxide in the direct oxidation of hydrogen to hydrogen peroxide over a solid catalyst comprising palladium, which comprises: i) depositing on the solid catalyst at least two halogen containing compounds, one compound essentially comprising bromine and second compound essentially comprising fluorine with the bromine to palladium and fluorine to palladium atom ratios in the range from 0.02 to 20 and from 0.01 to 50, respectively; ii) decomposing the halo compounds deposited on the solid catalyst by calcination at a temperature above 200° C. under inert, reducing or oxidizing gas atmosphere or under vacuum; and iii) contacting the solid catalyst obtained from step (ii) with a gas mixture consisting of hydrogen and oxygen or air or O2 enriched air in an aqueous reaction medium, comprising a mineral acid at the following reaction conditions: concentration of mineral acid in the reaction medium above 0.Type: GrantFiled: June 27, 2005Date of Patent: October 30, 2007Assignee: Council Of Scientific And Industrial ResearchInventors: Vasant Ramchandra Choudhary, Chancal Samanta, Prabhas Jana
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Patent number: 7241908Abstract: The invention is directed to the preparation of organic or aqueous-organic hydrogen peroxide solutions by direct synthesis from a non-explosive gaseous mixture containing hydrogen and oxygen. The process is carried out in the presence of a noble metal catalyst, using a reaction medium containing a halide and a strong acid. It can be performed in a stainless steel reactor without corrosion occurring to the reactor material if, during the reaction, the surface of the stainless steel is, at no place, in permanent contact with the gaseous mixture passing through the reactor.Type: GrantFiled: May 9, 2005Date of Patent: July 10, 2007Assignee: Degussa AGInventors: Thomas Haas, Guido Stochniol, Robert Jahn
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Publication number: 20070140949Abstract: This invention relates to a method for generating peroxides in petroleum streams and extracting oxidized sulfur and nitrogen compounds. Peroxides are generated in-situ by combining the petroleum stream with a high neutralization number (HNN) crude and adding an oxygen-containing stream. Alternatively, the oxidation of sulfur and nitrogen compounds may be accomplished by adding peroxides in the presence of oil soluble metal catalysts. The peroxides oxidize nitrogen and sulfur compounds in the petroleum stream to more polar compounds which are solvent extracted.Type: ApplicationFiled: December 16, 2005Publication date: June 21, 2007Inventors: Thomas R. Palmer, William J. Murphy
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Patent number: 7204963Abstract: Chlorosilanes are continuously removed from a gas stream in an apparatus in which the gas stream is treated in a first stage with water vapor in the gas phase, and in a second stage with a liquid, aqueous phase.Type: GrantFiled: November 19, 2003Date of Patent: April 17, 2007Assignee: Degussa AGInventors: Hartwig Rauleder, Franz-Michael Bollenrath, Harald Seiler, Mieczyslaw Kuzma, Christoph Koopmann
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Patent number: 7195747Abstract: A novel process for continuously mixing and reacting at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved using cyclone mixing where at least two supply channels feed a mixing chamber to create a vortex of the fluids to be mixed. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas/liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. Reaction of the fluids can take place within the mixing chamber or in a separate reactor in fluid communication with the mixing chamber outlet. The process is especially useful for reacting potentially explosive mixtures of reactants where a homogeneous reactor feed mixture is critical to maintaining a non-explosive environment.Type: GrantFiled: November 26, 2003Date of Patent: March 27, 2007Assignee: UOP LLCInventors: Kurt M. Vanden Bussche, Suheil F. Abdo, Anil R. Oroskar
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Patent number: 7179440Abstract: In this invention, a process to obtain hydrogen peroxide solutions by means of the direct reaction of hydrogen and oxygen in the presence of a solvent and of catalysts constituted from noble or semi-noble metals, or combinations of several of these metals, supported on a halogen-free acid resin, is described.Type: GrantFiled: March 13, 2003Date of Patent: February 20, 2007Assignee: Repsol Quimica, S.A.Inventors: Pilar De Frutos Escrig, Jose Miguel Campos Martin, Jose Luis Garcia Fierro, Encapnacion Cano Serrano, Gema Blanco Brieva
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Patent number: 7157071Abstract: The present invention discloses a process for the production of hydrogen peroxide from hydrazine hydrate or hydrazine salt, represented by a general formula: N2H4.nX, wherein, X is H2O, H2SO4, HNO3, HCl, HBr, HI or CH3COOH; n is 0.5, 1 or 2; N is nitrogen; H is hydrogen; S is sulfur; Cl is chlorine; Br is bromine; and I is iodine, by its liquid phase oxidation with oxygen, using a solid catalyst comprising palladium but with or without halogen promoter, in an aqueous reaction medium with or without comprising a mineral acid and/or halide anions, which comprises: i) contacting the solid catalyst with a hydrazine hydrate or hydrazine salt and oxygen containing gas selected from oxygen, air and oxygen enriched air, in aqueous reaction medium at the following reaction conditions: the concentration of hydrazine hydrate or hydrazine salt in the reaction medium above 0.Type: GrantFiled: June 30, 2004Date of Patent: January 2, 2007Assignee: Council of Scientitic and Industrial ResearchInventors: Vasant Ramchandra Choudhary, Chanchal Samanta, Prabhas Jana
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Patent number: 7147833Abstract: The invention relates to a method and apparatus for safely producing hydrogen peroxide by injecting dispersed minute bubbles of hydrogen and oxygen into a rapidly flowing liquid medium. The liquid medium can contain either a water-soluble organic compound, a water-insoluble organic compound, a combination of a water-insoluble organic compound with water, liquid carbon dioxide or supercritical carbon dioxide. The minute bubbles are surrounded by the liquid medium of sufficient volume for quench cooling any explosive reaction between the hydrogen and oxygen. The present invention also relates to reactors with internal catalyst structures and reactors that have a circular path, both of which may be used to produced hydrogen peroxide.Type: GrantFiled: March 25, 2002Date of Patent: December 12, 2006Inventor: Harold A. Huckins
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Patent number: 7144565Abstract: A process is disclosed for the direct catalytic production of aqueous solutions of hydrogen peroxide from hydrogen and oxygen in the presence of a small amount of one or more water soluble organic additives (about 0.1–10% by weight). Suitable catalysts include nanometer-sized noble metal catalytic crystal particles. The catalyst particles preferably have a controlled surface coordination number of 2 to increase the selectivity of hydrogen peroxide production. The water soluble additive(s) increases catalytic activity causing significant increases in the apparent first order reaction rate constant for the direct production of aqueous hydrogen peroxide.Type: GrantFiled: July 23, 2004Date of Patent: December 5, 2006Assignee: Headwaters Nanokinetix, Inc.Inventors: Michael Rueter, Bing Zhou, Sukesh Parasher
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Patent number: 7122166Abstract: Methods for concentrating hydrogen peroxide solutions have been described. The methods utilize a polymeric membrane separating a hydrogen peroxide solution from a sweep gas or permeate. The membrane is selective to the permeability of water over the permeability of hydrogen peroxide, thereby facilitating the concentration of the hydrogen peroxide solution through the transport of water through the membrane to the permeate. By utilizing methods in accordance with the invention, hydrogen peroxide solutions of up to 85% by volume or higher may be generated at a point of use without storing substantial quantities of the highly-concentrated solutions and without requiring temperatures that would produce explosive mixtures of hydrogen peroxide vapors.Type: GrantFiled: May 11, 2004Date of Patent: October 17, 2006Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Clyde F. Parrish
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Patent number: 7115192Abstract: A device is disclosed for the generation of hydrogen peroxide. The device produces hydrogen peroxide on an as-needed basis through the use of electrolysis of water, remixing hydrogen and oxygen in an appropriate ratio, and reacting the hydrogen and oxygen in water in a reactor.Type: GrantFiled: December 4, 2002Date of Patent: October 3, 2006Assignee: UOP LLCInventors: Kurt M. Vanden Bussche, Anil R. Oroskar, Jeffery C. Bricker, Laszlo T. Nemeth, Gavin P. Towler
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Patent number: 7105142Abstract: A process is described for the production of hydrogen peroxide from hydrogen and oxygen in a reaction solvent containing a halogenated promoter and/or an acid promoter, in the presence of a heterogeneous catalyst based on one or more metals of the platinum group, wherein the reaction solvent consists of: (1) an alcohol or mixture of alcohols; (2) an aliphatic ether having general formula (I); and (3) optionally water. The solvent mixture may also contain one or more C5–C32 hydrocarbons. The process operates under high safety conditions with a high productivity and molar selectivity towards the formation of H2O2.Type: GrantFiled: April 29, 2002Date of Patent: September 12, 2006Assignees: Eni S.p.A., Polimeri Europa S.p.A.Inventors: Giuseppe Paparatto, Giordano De Alberti, Rino D'Aloisio
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Patent number: 7105143Abstract: An improved catalytic process for producing hydrogen peroxide directly by reaction of hydrogen and oxygen is disclosed. The process employs staged or sequential feeding of portions of the hydrogen feedstream into zones in the catalytic reactor in amounts sufficient to maintain an essentially constant and preferred ratio of oxygen to hydrogen at the inlet to each of the vessel's zones whereby high selectivity for hydrogen peroxide production is achieved and excess oxygen recycle requirements are minimized.Type: GrantFiled: August 25, 2005Date of Patent: September 12, 2006Assignee: Headwaters Nanokinetix, Inc.Inventor: Michael Rueter
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Patent number: 7101526Abstract: The present invention relates to a catalyst consisting of: (a) one or more metals of the platinum group as active components; (b) one or more polyolefins; and (c) a carrier. The invention also relates to a process for the synthesis of hydrogen peroxide (H2O2) from hydrogen and oxygen which uses said catalyst and the use of the hydrogen peroxide solution in oxidation processes catalyzed by titanium silicalite. The process operates under high safety conditions with a high productivity and molar selectivity towards the formation of H2O2.Type: GrantFiled: July 30, 2002Date of Patent: September 5, 2006Assignees: ENI S.p.A., Polimeri Europa S.p.A.Inventors: Giuseppe Paparatto, Giordano De Alberti, Rino D'Aloisio, Roberto Buzzoni
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Patent number: 7070757Abstract: Catalysts produced by electroless deposition of at least one platinum metal on a nonporous nonmetallic support can be used for the synthesis of hydrogen peroxide from the elements and for the hydrogenation of organic compounds.Type: GrantFiled: October 1, 2001Date of Patent: July 4, 2006Assignee: BASF AktiengesellschaftInventors: Martin Fischer, Thomas Butz
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Patent number: 7067103Abstract: An improved catalytic process for producing hydrogen peroxide directly by reaction of hydrogen and oxygen is disclosed. The process employs staged or sequential feeding of portions of the hydrogen feedstream into zones in the catalytic reactor in amounts sufficient to maintain an essentially constant and preferred ratio of oxygen to hydrogen at the inlet to each of the vessel's zones whereby high selectivity for hydrogen peroxide production is achieved and excess oxygen recycle requirements are minimized.Type: GrantFiled: March 28, 2003Date of Patent: June 27, 2006Assignee: Headwaters Nanokinetix, Inc.Inventor: Michael Rueter
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Patent number: 7060244Abstract: The invention concerns a method for making an aqueous solution of hydrogen peroxide. More particularly, it concerns a method for making hydrogen peroxide directly from hydrogen and oxygen, finely dispersed in an aqueous acid medium comprising a catalyst and at least a surfactant. The invention also concerns a device for implementing said method.Type: GrantFiled: February 15, 2001Date of Patent: June 13, 2006Assignee: ArkemaInventor: Michel Devic