Processes Patents (Class 568/449)
  • Patent number: 9926253
    Abstract: A novel method for catalytic dehydration of glycerol to acrolein is provided. A fixed bed reactor is used, which is placed in a microwave unit. The feedstock is introduced into the fixed bed reactor after being preheated and gasified. Continuous glycerol dehydration occurs in the presence of a microwave-absorbing catalyst in the fixed bed reactor to form acrolein. The microwave-absorbing catalyst is composed of an active component loaded on a core-shell structure which consists of microwave absorbent coated by an oxide. The uniformity of microwave heating can reduce the formation of hot spot during the reaction and hence improve the catalyst stability. The process and operation is simple, and the unit can steadily run for a long time.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: March 27, 2018
    Assignee: ZHEJIANG UNIVERSITY OF TECHNOLOGY
    Inventors: Yong Nie, Qinglong Xie, Ruchao Gong, Ying Duan, Shanshan Li, Yang Liu, Xiaojiang Liang, Zhenyu Wu, Meizhen Lu, Fengwen Yu, Jianbing Ji
  • Patent number: 9796648
    Abstract: Methods and systems for suppressing coking in dehydration reactions catalyzed by solid acids. Dehydration reactions catalyzed by one or more solid acid catalysts can be performed in the presence of a super critical carbon dioxide medium which prevents or minimizes coking of the solid acid catalysts. Methods and systems are provided for producing glycerol products, such as acrolein, acrylic acid, acetol, by performing a dehydration reaction of glycerol using one or more solid acid catalysts in the presence of a super critical carbon dioxide reaction medium. Such methods and systems can be nm for extended periods of time, or continuously, due to catalyst regeneration and/or recycling. Such methods and systems are configured to produce glycerol products from crude glycerol feedstock with minimal pretreatment.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: October 24, 2017
    Assignee: University of Tennessee Research Foundation
    Inventor: Xiaofei Ye
  • Patent number: 9718749
    Abstract: The present invention is related to a novel and improved process for the preparation of 3,7-dimethylnonan-1-ol.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: August 1, 2017
    Assignee: DSM IP ASSETS B.V.
    Inventors: Werner Bonrath, Jonathan Medlock
  • Patent number: 9580376
    Abstract: Provided is a method of subjecting an alkene to partial oxidation by using a fixed bed multitubular reactor, thereby producing an unsaturated aldehyde and/or an unsaturated carboxylic acid each corresponding to the alkene, wherein a plurality of catalyst layers formed by N division (N is N?2) with respect to a gas flow direction of a reaction tube are provided, and when a change (° C.) of hot spot temperature per 1° C. change of reaction bath temperature in the catalyst layer is designated as Sn, at least one of the plurality of catalyst layers is regulated to Sn?6.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: February 28, 2017
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Tomoyuki Kawamura, Tatsuhiko Kurakami, Yuuta Nakazawa, Toru Kawaguchi, Motohiko Sugiyama
  • Patent number: 9440904
    Abstract: Provided is a method capable of producing acrolein and/or acrylic acid, or methacrolein and/or methacrylic acid, stably in a high yield over a long period of time advantageously even in a high-load reaction, and the method is a method in which when preparing two or more kinds of catalysts having different formulations and stacking two or more layers in the axial direction of the tube, the catalysts are filled in such a manner that not only the component amount of bismuth relative to molybdenum decreases from the gas inlet side toward the gas outlet side, but also the component amount of iron relative to molybdenum increases from the gas inlet side toward the gas outlet side.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: September 13, 2016
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yuuta Nakazawa, Tatsuhiko Kurakami, Kazuo Shiraishi
  • Patent number: 9127048
    Abstract: The present invention discloses positive control material for nucleic acid amplification based detection of microorganisms in biological samples. The control material comprises purified microorganism that is rendered non-infectious but is amenable to nucleic acid amplification. Also disclosed is a process for making and using the control material.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: September 8, 2015
    Assignee: ZeptoMetrix Corporation
    Inventors: Gregory R. Chiklis, James C. D. Hengst
  • Patent number: 9120849
    Abstract: The present invention discloses positive control material for nucleic acid amplification based detection of microorganisms in biological samples. The control material comprises purified microorganism that is rendered non-infectious but is amenable to nucleic acid amplification. Also disclosed is a process for making and using the control material.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: September 1, 2015
    Assignee: ZeptoMetrix Corporation
    Inventors: Gregory R. Chiklis, James C. D. Hengst
  • Patent number: 8884070
    Abstract: Provided is a process for producing an aldehyde from an alkylene. The process includes (a) photocatalytically dehydrogenating at least one alkane to obtain a mixture comprising at least one olefin and hydrogen, (b) adding carbon dioxide and hydrogen to the mixture, and (c) hydroformylating the olefin to at least one aldehyde. The process also includes converting carbon dioxide and hydrogen into water and carbon monoxide prior to the hydroformylating. In addition, the conversion of carbon dioxide and hydrogen into water and carbon monoxide is performed by a reverse water gas shift reaction.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: November 11, 2014
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Robert Franke, Dirk Fridag, Bart Hamers, Horst-Werner Zanthoff, Matthias Blug, Julia Strautmann, Stefan Nordhoff
  • Patent number: 8865614
    Abstract: A process for producing a ringlike oxidic shaped body by mechanically compacting a pulverulent aggregate introduced into the fill chamber of a die, wherein the outer face of the resulting compact corresponds to that of a frustocone.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: October 21, 2014
    Assignee: BASF SE
    Inventors: Knut Eger, Jens Uwe Faust, Holger Borchert, Ralf Streibert, Klaus Joachim Mueller-Engel, Andreas Raichle
  • Patent number: 8829255
    Abstract: Provided are (Z,Z,E)-1-chloro-6,10,12-pentadecatriene that can be synthesized without an oxidation reaction and a method for preparing (Z,Z,E)-7,11,13-hexadecatrienal by using (Z,Z,E)-1-chloro-6,10,12-pentadecatriene while not using an oxidation reaction. More specifically, provided is a method for preparing (Z,Z,E)-7,11,13-hexadecatrienal including a step of reacting a Grignard reagent into which (Z,Z,E)-1-chloro-6,10,12-pentadecatriene is converted with ethyl orthoformate to obtain (Z,Z,E)-1,1-diethoxy-7,11,13-hexadecatriene, and a step of treating the (Z,Z,E)-1,1-diethoxy-7,11,13-hexadecatriene with an acid to obtain (Z,Z,E)-7,11,13-hexadecatrienal.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: September 9, 2014
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yuki Miyake, Miyoshi Yamashita, Takehiko Fukumoto, Naoki Ishibashi
  • Patent number: 8821804
    Abstract: The invention relates to the use of monoliths as particle filters for limiting the deactivation of catalysts during catalytic reactions in multi-tubular reactors. The invention is particularly well-suited for catalytic oxidation reactions in the gaseous phase. The invention also relates to multi-tubular reactors including monoliths as particle filters.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: September 2, 2014
    Assignee: Arkema France
    Inventor: Jean-Luc Dubois
  • Patent number: 8742169
    Abstract: The present invention relates to a method for producing acrolein, comprising step (1) of subjecting glycerol to dehydration reaction in the presence of a copper compound and a compound containing a heteroatom; step (2) of recovering acrolein generated in the dehydration reaction step (1); step (3) of recovering part or all of the copper compound which remained after the recovery of acrolein; step (4) of treating part or all of the recovered copper compound with at least one member selected from a group consisting of an oxidizing agent and acid; and step (5) of returning part or all of the copper compound treated in the above step to step (1); and a method for producing acrylic acid, comprising reacting acrolein obtained by the above method with molecular oxygen.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: June 3, 2014
    Assignee: Showa Denko K.K.
    Inventors: Takanori Aoki, Masayuki Yoshimura
  • Patent number: 8742176
    Abstract: The invention relates to a method of producing optically active 4-chloro-3-hydroxybutanal compound (2) by reacting chloroacetaldehyde with aldehyde compound (1) in the presence of optically active pyrrolidine compound (5). wherein each symbol is as defined in the specification.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: June 3, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Yujiro Hayashi
  • Publication number: 20140094617
    Abstract: A chemical reactor including: a plurality of heat exchange plates which between them define reaction compartments, in which reactor each heat exchange plate includes two walls between them defining at least one heat exchange space, the respective walls being fixed together by joining regions, and the reactor also comprises at least one injection device for injecting substance into the reaction compartments, said substance-injection device passing through the heat-exchange plates in respective joining regions thereof. Also, a chemical reaction process that can be carried out in this reactor.
    Type: Application
    Filed: June 1, 2012
    Publication date: April 3, 2014
    Applicant: ARKEMA FRANCE
    Inventor: Jean-Luc Dubois
  • Patent number: 8686194
    Abstract: Mo-, Bi- and Fe-comprising multimetal oxide compositions of the general stoichiometry I, Mo12BiaCobFecKdSieOx??(I), where a=0.5 to 1, b=7 to 8.5, c=1.5 to 3.0, d=0 to 0.15, e=0 to 2.5 and x=the stoichiometric coefficient of O2? which guarantees the electric neutrality of the multimetal oxide, and 12?b?1.5·c=A and 0.5?A?1.5, 0.2?a/A?1.3, and 2.5?b/c?9, and the use thereof.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: April 1, 2014
    Assignee: BASF SE
    Inventors: Josef Macht, Andrey Karpov, Cornelia Katharina Dobner, Frank Rosowski, Ulrich Hammon, Klaus Joachim Müller-Engel
  • Publication number: 20140087978
    Abstract: A method of converting an inactive biocide into an active biocide comprises: contacting the inactive biocide with an activating agent, wherein the activating agent is capable of chemically reacting with the inactive biocide; and causing or allowing a chemical reaction to take place between the inactive biocide and the activating agent, wherein the chemical reaction produces the active biocide. The methods can also include deactivating the active biocide via a chemical reaction between the active biocide and a deactivating agent.
    Type: Application
    Filed: September 27, 2012
    Publication date: March 27, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC
    Inventor: Jay P. DEVILLE
  • Patent number: 8618336
    Abstract: A process for long-term operation of a heterogeneously catalyzed partial gas phase oxidation of propene to acrolein, in which the propene present in the reaction gas input mixture is partially oxidized as this gas mixture passes through the fixed catalyst bed which is accommodated in two spatially successive temperature zones A, B, and, in long-term operation, as a measure to counteract the reduction in the quality of the fixed catalyst bed, the temperature of at least one of the two temperature zones is increased such that the difference TB?TA becomes increasingly greater, where TB is the temperature of temperature zone B, and TA the temperature of temperature zone A.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: December 31, 2013
    Assignee: BASF SE
    Inventors: Josef Macht, Klaus Joachim Mueller-Engel, Frank Rosowski
  • Publication number: 20130324758
    Abstract: The present invention relates to the selective elimination of propanal in acrolein-rich streams to produce acrolein and/or acrylic acid and/or acrylonitrile and/or methylmercaptopropionaldehyde containing low amount of propanal and/or propionic acid and/or propionitrile. One subject of the present invention is a process for manufacturing acrolein comprising a step of selective elimination of propanal in an acrolein-rich stream in contact with a catalyst comprising at least molybdenum. Another subject of the present invention is a process for manufacturing acrylic acid from glycerol including a step of selective elimination of propanal in an acrolein-rich stream in contact with a catalyst comprising at least molybdenum.
    Type: Application
    Filed: January 26, 2012
    Publication date: December 5, 2013
    Applicant: Arkema France
    Inventors: Jean-Francois Devaux, Jean-Luc Dubois
  • Patent number: 8598065
    Abstract: A process for charging a longitudinal section of a catalyst tube with a homogeneous fixed catalyst bed section whose active composition is at least one multielement oxide or comprises elemental silver on an oxidic support body and whose geometric shaped catalyst bodies and shaped inert bodies have a specific inhomogeneity of their longest dimensions.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: December 3, 2013
    Assignee: BASF SE
    Inventors: Martin Dieterle, Klaus Joachim Müller-Engel
  • Publication number: 20130310610
    Abstract: A heterogeneous catalyst that is a combination of rhodium, zinc, iron, a fourth metal and at least one metal selected from alkali metals and alkaline earth metals on a catalyst support (e.g. at least one of silica, alumina, titania, magnesia, zinc aluminate (ZnAl2O4), magnesium aluminate (MgAl2O4), magnesia-modified alumina, zinc oxide-modified alumina, zirconium oxide-modified alumina, and zinc oxide) and use of the catalyst in converting an alkylene to an oxygenate that has one more carbon atom than the alkylene.
    Type: Application
    Filed: January 12, 2012
    Publication date: November 21, 2013
    Applicant: Dow Global Technologies LLC
    Inventors: Palanichamy Manikandan, Sreenivasa Rao, Phani Kiran Bollapragada, David G. Barton, Richard M. Wehmeyer, William Tenn, Gerolamo Budroni
  • Patent number: 8569546
    Abstract: In a process for producing C1-C10 aldehydes by oxidative dehydrogenation of C1-C10 alcohols over a shaped catalyst body obtainable by three-dimensional shaping and/or arranging in space of silver-containing fibers and/or threads, the average diameter or the average diagonal length of an essentially rectangular or square cross section of these silver-containing fibers and/or threads is in the range from 30 ?m to 200 ?m.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: October 29, 2013
    Assignee: BASF SE
    Inventors: Christian Baltes, Grigorios Kolios, Peter Resch, Ulrike Wegerle, Torsten Mäurer
  • Publication number: 20130261323
    Abstract: Isobutene, isoprene, and butadiene are obtained from mixtures of C4 and/or C5 olefins by dehydrogenation. The C4 and/or C5 olefins can be obtained by dehydration of C4 and C5 alcohols, for example, renewable C4 and C5 alcohols prepared from biomass by thermochemical or fermentation processes. Isoprene or butadiene can be polymerized to form polymers such as polyisoprene, polybutadiene, synthetic rubbers such as butyl rubber, etc. in addition, butadiene can be converted to monomers such as methyl methacrylate, adipic acid, adiponitrile, 1,4-butadiene, etc. which can then be polymerized to form nylons, polyesters, polymethylmethacrylate etc.
    Type: Application
    Filed: May 24, 2013
    Publication date: October 3, 2013
    Applicant: GEVO, INC.
    Inventors: Matthew W. Peters, Joshua D. Taylor, David E. Henton, Leo E. Manzer, Patrick R. Gruber, Josefa M. Griffith, Yassin Al Obaidi
  • Patent number: 8530697
    Abstract: The subject of the present invention is a method for the reactive vaporization of aqueous solutions of glycerol in a fluidized bed containing a reactive solid. The method of the invention makes it possible to simultaneously vaporize an aqueous solution of glycerol, to remove the impurities that are present in this solution or that are generated during the evaporation, and to carry out the dehydration reaction of the glycerol to acrolein and/or the oxydehydration reaction of the glycerol to acrylic acid.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: September 10, 2013
    Assignee: Arkema France
    Inventors: Jean-Luc Dubois, Grégory Patience
  • Publication number: 20130178657
    Abstract: The problem addressed by the present invention is that of specifying a process for producing aldehydes which, compared with conventional hydroformylation, cuts CO2, which utilises alternative sources of raw materials, and which has no need for a step of providing carbon monoxide. This problem is solved by processes comprising the following steps: a) providing at least one alkane; b) photocatalytically dehydrogenating the alkane to a mixture comprising at least one olefin and hydrogen; c) adding carbon dioxide and hydrogen to the mixture; d) hydroformylating the olefin to at least one aldehyde. More particularly, n-butane is initially dehydrogenated photocatalytically and the resulting 1-butene is reacted with CO2 in a hydroformylation to form valeraldehyde.
    Type: Application
    Filed: June 16, 2011
    Publication date: July 11, 2013
    Applicant: Evonik Oxeno GmbH
    Inventors: Robert Franke, Dirk Fridag, Bart Hamers, Horst-Werner Zanthoff, Matthias Blug, Julia Strautmann, Stefan Nordhoff
  • Publication number: 20130172615
    Abstract: Provided is a catalyst for production of unsaturated aldehyde and/or unsaturated carboxylic acid, which shows excellent mechanical strength and low attrition loss and is capable of producing the object product(s) at a high yield. The catalyst comprises a catalytically active component containing molybdenum, bismuth and iron as the essential ingredients, and inorganic fibers, and is characterized in that the inorganic fibers contain at least an inorganic fiber having an average diameter of at least 8 ?m and another inorganic fiber having an average diameter not more than 6 ?m.
    Type: Application
    Filed: September 7, 2011
    Publication date: July 4, 2013
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Tomoatsu Kawano, Yutaka Takahashi, Naohiro Fukumoto
  • Patent number: 8471071
    Abstract: The present invention relates to a process for producing coated silver catalysts. The invention further addresses the silver catalysts themselves and the advantageous use thereof in formaldehyde synthesis.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: June 25, 2013
    Assignee: Allgemeine Gold-und Silberscheideanstalt AG
    Inventor: Marco Brenk
  • Patent number: 8465701
    Abstract: Provided is a catalyst material comprising aggregates of nanoneedles of mainly R-type manganese dioxide and having a mesoporous structure. With this, water can be oxidatively decomposed under visible light at room temperature to produce oxygen gas, proton and electron. Also provided is a catalyst material comprising aggregates of nanoparticles of mainly hydrogenated manganese dioxide. With this, acetic acid or an inorganic substance can be synthesized from carbon dioxide gas.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: June 18, 2013
    Assignee: Kyoto University
    Inventor: Hideki Koyanaka
  • Publication number: 20130091759
    Abstract: A method of production of value-added, biobased chemicals, derivative products, and/or purified glycerin from plant-based bioglycerin is described herein. A method of purification of plant-based bioglycerin is also described herein. The method of purification of plant-based bioglycerin described provides methods for desalinating, decolorizing, and/or concentrating plant-based bioglycerin for the production of biobased chemicals, derivative products, and/or purified glycerin.
    Type: Application
    Filed: January 12, 2012
    Publication date: April 18, 2013
    Applicant: THESIS CHEMISTRY, LLC
    Inventors: John R. Peterson, Christopher M. Yost
  • Publication number: 20130091760
    Abstract: A method of production of value-added, biobased chemicals, derivative products, and/or purified glycerin from animal-based bioglycerin is described herein. A method of purification of animal-based bioglycerin is also described herein. The method of purification of animal-based bioglycerin described provides methods for desalinating, decolorizing, and/or concentrating animal-based bioglycerin for the production of biobased chemicals, derivative products, and/or purified glycerin.
    Type: Application
    Filed: January 12, 2012
    Publication date: April 18, 2013
    Applicant: Thesis Chemistry, LLC
    Inventors: John R. Peterson, Christopher M. Yost
  • Publication number: 20130096326
    Abstract: A method of purification and production of value-added, biobased chemicals and derivative products from crude bioglycerin is described herein. The present method provides methods for desalinating, decolorizing, and concentrating bioglycerin for the production of biobased chemicals or purified bioglycerin.
    Type: Application
    Filed: October 12, 2011
    Publication date: April 18, 2013
    Applicant: THESIS CHEMISTRY, LLC
    Inventors: John R. Peterson, Christopher M. Yost
  • Patent number: 8383863
    Abstract: Provided is a highly efficient method for the production of aldehydes and ketones, which is inexpensive, exhibits high reactivity, and is capable of easy separation of byproduct after the reaction. More particularly, there is provided a method for producing an aldehyde or a ketone, comprising at least an oxidation step of oxidizing a primary alcohol or a secondary alcohol in the presence of a polymeric carbodiimide represented by the following formula (1) and having a weight-average molecular weight of 300 to 5000, and a sulfoxide compound, together with an acid and a base, or together with a salt of the acid and the base.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: February 26, 2013
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Miyoshi Yamashita
  • Publication number: 20130036660
    Abstract: The present invention provides methods, reactor systems, and catalysts for converting in a continuous process biomass to fuels and chemicals. The invention includes methods of converting the water insoluble components of biomass, such as hemicellulose, cellulose and lignin, to volatile C2+O1-2 oxygenates, such as alcohols, ketones, cyclic ethers, esters, carboxylic acids, aldehydes, and mixtures thereof. In certain applications, the volatile C2+O1-2 oxygenates can be collected and used as a final chemical product, or used in downstream processes to produce liquid fuels, chemicals and other products.
    Type: Application
    Filed: May 23, 2012
    Publication date: February 14, 2013
    Applicant: Virent, Inc.
    Inventors: Elizabeth Woods, Ming Qiao, Paul Myren, Randy D. Cortright, John Kania
  • Patent number: 8372993
    Abstract: A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I which comprises formaldehyde as the main component and trioxane and water as the secondary components, b) feeding the use stream I, a recycle stream V and a recycle stream VII which comprises formaldehyde as the main component and water and trioxane as the secondary components into a first distillation stage and distilling to obtain a stream II a steam III and formaldehyde as the and a steam X c) distilling the stream III, in a second distillation stage the pressure in the second distillation stage being from 0.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: February 12, 2013
    Assignee: BASF SE
    Inventors: Neven Lang, Joachim Thiel, Eckhard Stroefer, Julia Kirschbaum, Markus Siegert
  • Publication number: 20130023699
    Abstract: Mo-, Bi- and Fe-comprising multimetal oxide compositions of the general stoichiometry I, Mo12BiaCobFecKdSieOx??(I), where a=0.5 to 1, b=7 to 8.5, c=1.5 to 3.0, d=0 to 0.15, e=0 to 2.5 and x=the stoichiometric coefficient of O2? which guarantees the electric neutrality of the multimetal oxide, and 12?b?1.5·c=A and 0.5?A?1.5, 0.2?a/A?1.3, and 2.5?b/c?9, and the use thereof.
    Type: Application
    Filed: July 11, 2012
    Publication date: January 24, 2013
    Applicant: BASF SE
    Inventors: Josef Macht, Andrey Karpov, Cornelia Katharina Dobner, Frank Rosowski, Ulrich Hammon, Klaus Joachim Mueller-Engel
  • Patent number: 8350063
    Abstract: A process for separating trioxane from a feed stream I comprising formaldehyde, trioxane and water, in which a) a feed stream I comprising formaldehyde as main component and trioxane and water as secondary components is provided, b) the feed stream I, a recycle stream V and a recycle stream VII comprising formaldehyde as main component and water and trioxane as secondary components are fed into a first distillation stage and distilled at a pressure of from 0.1 to 2.5 bar to give a stream II comprising formaldehyde as main component and water as secondary component and a stream III comprising trioxane as main component and water and formaldehyde as secondary components and a stream X comprising water, trioxane and formaldehyde, c) the stream III is, if appropriate after removal of low boilers from the stream III in a low boiler removal stage, distilled in a second distillation stage at a pressure of from 0.2 to 17.5 bar, with the pressure in the second distillation stage being from 0.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: January 8, 2013
    Assignee: BASF SE
    Inventors: Markus Siegert, Neven Lang, Laszlo Szarvas, Christoph Sigwart, Franz Niklaus Windlin, Eckhard Stroefer
  • Patent number: 8324432
    Abstract: The invention relates to a method for the synthesis of acrolein by means of dehydration of the glycerol in the presence of a solid acid catalyst having a Hammett acidity of less than +2, such as sulfated zirconium oxides, phosphated zirconium oxides, tungstated zirconium oxides, silicated zirconium oxides, sulfated tin or titanium oxides, phosphated aluminas or silicas, doped iron phosphates, and phosphotungstic or silicotungstic acid salts placed in a reactive medium comprising a gaseous phase containing between 1 and 3000 ppm of an acid compound according to the Pearson classification, selected, for example, from SO3, SO2, and NO2, the dehydration reaction being carried out either in a gaseous phase or in a liquid phase.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: December 4, 2012
    Assignee: Arkema France
    Inventor: Jean-Luc Dubois
  • Publication number: 20120277473
    Abstract: In a process for producing C1-C10 aldehydes by oxidative dehydrogenation of C1-C10 alcohols over a shaped catalyst body obtainable by three-dimensional shaping and/or arranging in space of silver-containing fibers and/or threads, the average diameter or the average diagonal length of an essentially rectangular or square cross section of these silver-containing fibers and/or threads is in the range from 30 ?m to 200 ?m.
    Type: Application
    Filed: April 25, 2012
    Publication date: November 1, 2012
    Applicant: BASF SE
    Inventors: Christian Baltes, Grigorios Kolios, Peter Resch, Ulrike Wegerle, Torsten Mäurer
  • Patent number: 8273313
    Abstract: A system and process for separating methacrolein (MA) from methacrylic acid (MAA) and acetic acid in the gas phase product from partial oxidation of isobutylene (IB) in two oxidation steps is disclosed. The process and system maximize recovery of all three components at minimum capital and energy cost, under conditions that minimize polymerization conditions and plugging by solids deposition in compressors, columns, etc.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: September 25, 2012
    Assignee: Saudi Basic Industries Corporation
    Inventor: Frederick Merrill Galloway
  • Publication number: 20120222422
    Abstract: A method is disclosed of coupling and integrating natural gas recovery and separation along with chemical conversion. The method can comprise extracting at least one natural gas component. Non-limiting examples of the extracted component include ethane, propane, butanes, and pentanes. The method can also comprise contacting a natural gas stream with a catalyst under conditions that selectively convert at least one component into at least one product, such as ethylene, acetic acid, polyethylene, vinyl acetate, ethylene vinyl acetate, ethylene oxide, ethylene glycol, and their derivatives, propylene, polypropylene, propylene oxide, propylene glycol, acrylates, acrolein, acrylic acid, butenes, butadiene, methacrolein, methacrylic acid, methacrylates, and their derivatives, which can then be separated from the remaining components.
    Type: Application
    Filed: February 29, 2012
    Publication date: September 6, 2012
    Inventors: Mark Allen Nunley, Madan Mohan Bhasin, William George Etzkorn, George Ernest Keller, II, Parvez H. Wadia
  • Publication number: 20120116120
    Abstract: In one aspect, the inventive process comprises a process for pyrolyzing a hydrocarbon feedstock containing nonvolatiles in a regenerative pyrolysis reactor system. The inventive process comprises: (a) heating the nonvolatile-containing hydrocarbon feedstock upstream of a regenerative pyrolysis reactor system to a temperature sufficient to form a vapor phase that is essentially free of nonvolatiles and a liquid phase containing the nonvolatiles; (b) separating said vapor phase from said liquid phase; (c) feeding the separated vapor phase to the pyrolysis reactor system; and (d) converting the separated vapor phase in said pyrolysis reactor system to form a pyrolysis product.
    Type: Application
    Filed: January 13, 2012
    Publication date: May 10, 2012
    Inventors: Paul F. Keusenkothen, James N. McCoy, Frank Hershkowitz
  • Patent number: 8168833
    Abstract: Embodiments of the invention provide a method of using Schwartz Reagent, Cp2Zr(H)Cl, without accumulating or isolating it. Methods provide mixtures of Cp2ZrCl2, reductants that selectively reduce Cp2ZrCl2, and substrates. After reaction of Cp2ZrCl2 and the reductant, an intermediate reduction product is formed, apparently Schwartz Reagent. The in situ Schwartz Reagent then selectively reduces certain functional groups on the substrate. Substrates include tertiary amides, tertiary benzamides, aryl O-carbamates, and heteroaryl N-carbamates, which are reduced to aldehydes, benzaldehydes, aromatic alcohols, and heteroaromatics, respectively. Compared to prior methods, reagents are inexpensive and stable, reaction times are short, and reaction temperature in certain cases is conveniently room temperature. It has been estimated that using the in situ method described herein instead of synthesized or commercially obtained Schwartz Reagent provides a 50% reduction in cost.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: May 1, 2012
    Assignee: Queen's University at Kingston
    Inventors: Yigang Zhao, Victor A. Snieckus
  • Publication number: 20120095267
    Abstract: A process for long-term operation of a heterogeneously catalyzed partial gas phase oxidation of propene to acrolein, in which the propene present in the reaction gas input mixture is partially oxidized as this gas mixture passes through the fixed catalyst bed which is accommodated in two spatially successive temperature zones A, B, and, in long-term operation, as a measure to counteract the reduction in the quality of the fixed catalyst bed, the temperature of at least one of the two temperature zones is increased such that the difference TB?TA becomes increasingly greater, where TB is the temperature of temperature zone B, and TA the temperature of temperature zone A.
    Type: Application
    Filed: October 12, 2011
    Publication date: April 19, 2012
    Applicant: BASF SE
    Inventors: Josef MACHT, Klaus Joachim Müller-Engel, Frank Rosowski
  • Publication number: 20120095268
    Abstract: This invention relates to an apparatus, comprising: a plurality of plates in a stack defining at least one process layer and at least one heat exchange layer, each plate having a peripheral edge, the peripheral edge of each plate being welded to the peripheral edge of the next adjacent plate to provide a perimeter seal for the stack, the ratio of the average surface area of each of the adjacent plates to the average penetration of the weld between the adjacent plates being at least about 100 cm2/mm. The stack may be used as the core assembly for a microchannel processor. The microchannel processor may be used for conducting one or more unit operations, including chemical reactions such as SMR reactions.
    Type: Application
    Filed: October 18, 2011
    Publication date: April 19, 2012
    Inventors: Anna Lee Tonkovich, Thomas Yuschak, Kai Tod Paul Jarosch, Paul Neagle, Bin Yang, Ravi Arora, Jeffrey Marco, Jennifer Marco, Barry L. Yang, Andreas Munding, Sara Kampfe
  • Publication number: 20120065412
    Abstract: The present invention relates to a process for producing hydrocarbons from methane, which comprises, in a first stage (i), reacting methane to form ethylene and, in a later stage (ii), reacting the product mixture obtained in stage (i) which comprises ethylene and methane to give higher-value hydrocarbons. In addition, the present invention relates to a plant for producing hydrocarbons from methane in which, in a single plant strand, a plurality of plant units are arranged successively in series comprising: a first reactor A for carrying out a conversion from methane to ethylene a second reactor B for carrying out a conversion from ethylene to higher-value hydrocarbons.
    Type: Application
    Filed: May 10, 2010
    Publication date: March 15, 2012
    Applicant: BASF SE
    Inventors: Radwan Abdallah, Torsten Mäurer, Gerhard Theis
  • Publication number: 20120034665
    Abstract: The invention relates to methods for producing aldehydes and the oxidation and reduction products thereof.
    Type: Application
    Filed: April 28, 2010
    Publication date: February 9, 2012
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Thomas Haas, Florian Klasovsky, Hendrik Krauter, Steffen Schaffer, Rene Schoebel, Thomas Tacke, Klaus-Dieter Vorlop, Thomas Willke, Mirja Wessel
  • Patent number: 8080692
    Abstract: The invention relates generally to the production of oxygenated hydrocarbons such as lower alcohols and more preferably 1,2-propanediol. More particularly, this invention comprises a single-step catalytic process for the catalytic production of lower alcohols such as methanol, ethanol, ethylene glycol and 1,2-propanediol from glycerol in aqueous medium. The catalyst comprises a metal selected from the Group VIII transition metals, preferably platinum, alloys thereof and mixtures thereof and a microporous carrier, preferably a faujasite-type zeolite.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: December 20, 2011
    Assignee: Katholieke Universiteit Leuven
    Inventors: Els D'Hondt, Pierre Jacobs, Bert Sels
  • Publication number: 20110295041
    Abstract: A method of preparing a catalyst for producing acrolein by oxidation of propylene at high space velocity, said catalyst is a Mo—Bi—Fe—Co based composite metal oxide. Producing unsaturated aldehyde via partial oxidation of lower unsaturated olefin at high space velocity using said catalyst is suitable for process with or without off-gas recirculating. Said catalyst is prepared by co-precipitation, the reaction conditions for using said catalyst to produce unsaturated aldehyde are, the space velocity of unsaturated lower olefin relative to catalyst being 120˜200 h-1(STP), reaction temperature being 300˜420° C. and absolute pressure being 0.1˜0.5 MPa; a single-stage unsaturated lower olefin conversion ratio of greater than 98.0% and carbon oxide yield of less than 3.3% with an overall yield of unsaturated lower aldehyde and acid of greater than 94.0% are obtained. The process to prepare the said catalyst is simple, easy to be repeated, and capable of industrial scale-up.
    Type: Application
    Filed: May 26, 2011
    Publication date: December 1, 2011
    Applicant: Shanghai HuaYi Acrylic Acid Co. Ltd.
    Inventors: Jian Wang, Xuemei Li, Yan Zhuang, Kaimin Shi, Kun Jiao, Jianxue Ma, Xiaodong Chu, Jingming Shao
  • Publication number: 20110282102
    Abstract: Provided is a highly efficient method for the production of aldehydes and ketones, which is inexpensive, exhibits high reactivity, and is capable of easy separation of byproduct after the reaction. More particularly, there is provided a method for producing an aldehyde or a ketone, comprising at least an oxidation step of oxidizing a primary alcohol or a secondary alcohol in the presence of a polymeric carbodiimide represented by the following formula (1) and having a weight-average molecular weight of 300 to 5000, and a sulfoxide compound, together with an acid and a base, or together with a salt of the acid and the base.
    Type: Application
    Filed: May 5, 2011
    Publication date: November 17, 2011
    Inventor: Miyoshi Yamashita
  • Publication number: 20110201843
    Abstract: The present invention relates to a process for producing coated silver catalysts. The invention further addresses the silver catalysts themselves and the advantageous use thereof in formaldehyde synthesis.
    Type: Application
    Filed: August 26, 2009
    Publication date: August 18, 2011
    Applicant: ALLGEMEINE GOLD- UND SILBERSCHEEIDEANSTALT AG
    Inventor: Marco Brenk
  • Publication number: 20110172448
    Abstract: A cost effective process is presented for carrying out catalytic, in particular also exothermic, endothermic or autothermal reactions with optimum yield and selectivity. The system used is a wall-flow monolith which forces a flow from the inlet channel through the porous wall into the outlet channel by reciprocal closure of the gas channels. This is operated such that mass transfer and heat transport are determined virtually exclusively by convection, and diffusion-related thermal conduction phenomena can be neglected.
    Type: Application
    Filed: June 24, 2009
    Publication date: July 14, 2011
    Inventors: Martin Votsmeier, Susanne Ungermann, Juergen Gieshoff, Thomas Kreuzer