Epoxidation At Site Of Ethylenic Unsaturation Patents (Class 549/523)
  • Publication number: 20140213804
    Abstract: The invention relates to novel nitrile compounds according to formula I and II: (I) Formula I wherein: X=—CH3 or —C?N, (II) Formula II wherein: X=—CH3 or —C?N, each Y is independently chosen from —OH or RC(O)O—, each R is independently chosen from a C1?21 alkyl group. The invention also relates to processes for the preparation of nitrile compounds according to formula I and II and to uses of the nitrile compounds.
    Type: Application
    Filed: July 6, 2012
    Publication date: July 31, 2014
    Applicant: DSM IP ASSETS B.V.
    Inventors: Paulus Lambertus Alsters, Edwin Gerard Ijpeij
  • Patent number: 8791280
    Abstract: This invention relates to catalyst carriers to be used as supports for metal and metal oxide catalyst components of use in a variety of chemical reactions. More specifically, the invention provides a process of formulating an alpha alumina carrier that is suitable as a support for silver and the use of such catalyst in chemical reactions, especially the epoxidation of ethylene to ethylene oxide. The composition comprises at least one hydrated precursor of alpha alumina; an optional alpha alumina; and a binder. The composition is substantially free of seeding particles.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: July 29, 2014
    Assignee: SD Lizenzverwertungsgesellschaft mbH & Co. KG
    Inventor: Nabil Rizkalla
  • Patent number: 8785703
    Abstract: The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of contacting a stream comprising C4+ olefins with a zeolite-comprising catalyst at a temperature in the range of from 350 to 1000° C. and retrieving an olefinic product stream comprising: ethylene and/or propylene, and a C4+ hydrocarbon fraction, comprising paraffins, normal olefins and iso-olefins; The C4+ hydrocarbon fraction is recycled while part of the fraction is purged. The part of the C4+ hydrocarbon with is purged is treated to extract C4+ isoolefins as tert-alkyl ethers. At least part of tert-alkyl ethers are converted to further ethylene and propylene.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: July 22, 2014
    Assignee: Shell Oil Company
    Inventors: Sivakumar Sadasivan Vijayakumari, Jeroen Van Westrenen
  • Publication number: 20140200357
    Abstract: A method for the epoxidation of an olefin comprising the steps of reacting a feed gas composition containing an olefin, oxygen, and a moderator having a post-conditioning step where the catalyst is exposed to reactor feed having a chlorides concentration of from about 5 ppm to about 7 ppm and at a temperature of about 215° C. to about 225° C.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 17, 2014
    Applicant: SCIENTIFIC DESIGN COMPANY, INC.
    Inventors: Ashok S. Padia, Hassan Eisa Al-Ahmadi
  • Patent number: 8779226
    Abstract: The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of: a) providing an oxygenate-comprising feedstock; b) contacting the oxygenate-comprising feedstock with a molecular sieve-comprising catalyst at a temperature in the range of from 450 to 700° C. and converting at least part of the oxygenate into an olefinic product comprising ethylene and/or propylene; and c) retrieving the olefinic product, wherein the oxygenate-comprising feedstock comprises in the range of from 1 to 97 wt % of at least one tert-alkyl ether selected from the group MTBE, ETBE, TAME and TAEE, based on the weight of the oxygenates in the oxygenate-comprising feedstock, and further comprises methanol and/or DME.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: July 15, 2014
    Assignee: Shell Oil Company
    Inventors: Leslie Andrew Chewter, Rajaram Ramesh, Jeroen Van Westrenen
  • Publication number: 20140187804
    Abstract: The present invention relates to a process for removing oxygenate from an olefin stream comprising oxygenate, comprising providing to an oxygenate recovery zone the olefin stream comprising oxygenate and a solvent comprising propanol, treating the olefin stream comprising oxygenate with the solvent, and retrieving from the oxygenate recovery zone at least one oxygenate-depleted olefinic product stream comprising olefin and a spent solvent comprising at least part of the oxygenate.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 3, 2014
    Applicant: Shell Oil Company
    Inventor: Jeroen VAN WESTRENEN
  • Publication number: 20140187805
    Abstract: The present invention relates to a process for removing dimethylether from an olefin stream comprising dimethylether, comprising: (a) providing to an oxygenate recovery zone the olefin stream comprising dimethylether and a methanol-comprising solvent, treating the olefin stream comprising dimethylether with the methanol comprising solvent, and retrieving at least a dimethylether-depleted, methanol-comprising olefin stream; and (b) providing to the oxygenate recovery zone a non-aqueous C2 to C4 alcohol solvent and treating the dimethylether-depleted, methanol-comprising olefin stream with the non-aqueous C2 to C4 alcohol solvent, and retrieving from the oxygenate recovery zone at least an olefinic product that is depleted in dimethylether and methanol and a spent solvent comprising at least one C2 to C4 alcohol and methanol.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 3, 2014
    Applicant: Shell Oil Company
    Inventor: Jeroen VAN WESTRENEN
  • Patent number: 8765981
    Abstract: A process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a catalyst comprising a copper oxide and a tellurium oxide.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: July 1, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yoshihiko Ohishi, Anusorn Seubsai, Selim Senkan
  • Publication number: 20140179936
    Abstract: A method producing a surfactant from glycerol by converting glycerol, in a first step, to glycidol, polymerizing glycidol to an aliphatic alcohol and finally substituting a hydroxyl group with a substitute anion.
    Type: Application
    Filed: October 15, 2013
    Publication date: June 26, 2014
    Inventors: Andre Pienaar, Laurence Justin Pienaar Wilson, Michael Stockenhuber
  • Publication number: 20140179937
    Abstract: A method for producing an epoxide is provided. The method includes a step of performing a reaction of an olefine compound and an oxidant to form the epoxide by using a titanium-silicon molecular sieve as a catalyst, thereby increasing the conversion rate of the oxidant and the yield of the epoxide.
    Type: Application
    Filed: October 29, 2013
    Publication date: June 26, 2014
    Applicant: China Petrochemical Development Corporation, Taipei (Taiwan)
    Inventors: Yu-Chuan Hsu, Cheng-Fa Hsieh
  • Patent number: 8759552
    Abstract: The present invention provides a continuous process for the epoxidation of an olefinic compound with an oxidant, which process comprises reaction of an olefinic compound with an oxidant in the presence of a catalyst in an apparatus that comprises a reactive distillation column, which column comprises (i) a reactive section, which comprises the catalyst (ii) a rectifying section situated above the reactive section and adapted to allow separation of reagents and/or by-products from products (ix) a stripping section situated below the reactive section and adapted to allow separation of product from reagents and/or by-products (x) a vessel situated below the stripping section and adapted to provide a source of heat for the column and in which initial vaporization of one or more of the reagents can occur, wherein the temperature in the reactive section (i) is a temperature at which the reaction between the olefinic compound and the oxidant takes place and the temperature in the stripping section (iii) is higher
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: June 24, 2014
    Assignee: South Bank University Enterprises Ltd.
    Inventors: Basudeb Saha, Krzysztof Ambroziak, David C. Sherrington, Rene Mbeleck
  • Patent number: 8754277
    Abstract: The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of providing a hydrocarbon stream, comprising C4+ normal olefins and C4+ iso-olefins; converting C4+ isoolefins to tert-alkyl ether and separating the ethers from the hydrocarbon stream; isomersing the C4+ normal olefins to iso-olefins and converting C4+ isoolefins to tert-alkyl ether and separating the ethers from the hydrocarbon stream; converting the obtained tert-alkyl ether to ethylene and propylene by contacting the tert-alkyl ether with a molecular sieve-comprising catalyst and retrieving an olefinic product.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: June 17, 2014
    Assignee: Shell Oil Company
    Inventors: Sivakumar Sadasivan Vijayakumari, Jeroen Van Westrenen
  • Patent number: 8754280
    Abstract: The present invention provides a method for start-up of an Oxygenate-to-Olefins process, which process comprises the steps: a) providing an oxygenate-comprising feedstock to an Oxygenate-to-Olefins reaction zone and contacting the feedstock with a zeolite-comprising catalyst at a temperature in the range of from 450 to 700° C. ° C., to obtain an reaction product containing olefins; b) separating the reaction product obtained in step a) in at least a product fraction containing ethylene and/or propylene and a product fraction containing C4+ olefins; c) recycling at least part of the C4+ olefins in the product fraction containing C4+ olefins to the Oxygenate-to-Olefins reaction zone in step (a), characterized in that upon start-up the oxygenate-comprising feedstock initially comprises a first amount of externally supplied tert-alkyl ether and subsequently the amount of externally supplied tert-alkyl ether in the oxygenate-comprising feedstock is reduced.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: June 17, 2014
    Assignee: Shell Oil Company
    Inventors: Leslie Andrew Chewter, Rajaram Ramesh, Sivakumar Sadasivan Vijayakumari, Jeroen Van Westrenen
  • Publication number: 20140155638
    Abstract: The present invention provides an efficient method of synthesizing and purifying dianhydrohexitols such as dianhydrogalactitol. In general, as applied to dianhydrogalactitol, the method comprises: (1) reacting dulcitol with a concentrated solution of hydrobromic acid at a temperature of about 80° C. to produce dibromogalactitol; (2) reacting the dibromogalactitol with potassium carbonate in t-butanol to produce dianhydrogalactitol; and (3) purifying the dianhydrogalactitol using a slurry of ethyl ether to produce purified dianhydrogalactitol. Another method produces dianhydrogalactitol from dulcitol; this method comprises: (1) reacting dulcitol with a reactant to convert the 1,6-hydroxy groups of dulcitol to an effective leaving group to generate an intermediate; and (2) reacting the intermediate with an inorganic weak base to produce dianhydrogalactitol through an intramolecular SN2 reaction. Other methods for the synthesis of dianhydrogalactitol from dulcitol are described.
    Type: Application
    Filed: July 2, 2013
    Publication date: June 5, 2014
    Inventor: DENNIS M. BROWN
  • Patent number: 8742188
    Abstract: The present invention provides a process for preparing ethylene and/or propylene and an iso-olefin-depleted olefinic product, comprising the steps of: a) providing a C5 hydrocarbon-comprising stream, comprising C5 cyclopentene and C5 iso-olefins; b) subjecting the C5 hydrocarbon-comprising stream to an etherification process with methanol and/or ethanol wherein at least part of the C5 iso-olefins are converted with methanol and/or ethanol to an tert-alkyl ether, and retrieving an etherification product stream; c) separating at least part of the etherification product stream into at least an ether-enriched stream and a first iso-olefin-depleted olefinic product; d) converting at least part of the tert-alkyl ether in the ether-enriched stream to ethylene and/or propylene by contacting at least part of the ether-enriched stream with a molecular sieve-comprising catalyst at a temperature in the range of from 350 to 1000° C. and retrieving a second olefinic product comprising ethylene and/or propylene.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: June 3, 2014
    Assignee: Shell Oil Company
    Inventors: Leslie Andrew Chewter, Rajaram Ramesh, Sivakumar Sadasivan Vijayakumari, Jeroen Van Westrenen
  • Publication number: 20140135513
    Abstract: Techniques are provided for determining the proper way to load thermocouple reactor tubes in multi-tubular ethylene oxide reactors containing a large number of reactor tubes containing silver catalysts. In these techniques, it is necessary to adjust the pressure drop so that oxygen conversion by thermocouple reactor tubes will closely match that of non-thermocouple reactor tubes.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 15, 2014
    Applicant: SHELL OIL COMPANY
    Inventor: Paul Michael MCALLISTER
  • Publication number: 20140128510
    Abstract: A resin composition prepared by blending an epoxy compound represented by the following formula (1), an acid anhydride, and a curing accelerator, wherein the epoxy compound is purified in such a way that, in a chromatogram obtained by gas chromatographic analysis, a ratio of a peak area B of peaks derived from a heavier molecular mass portion having longer retention times than the epoxy compound to a peak area A of peak(s) derived from the epoxy compound B/A is 2.0×10?3 or less. [In the formula, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, and R12 each independently represent a hydrogen atom, a halogen atom, an alkyl group which may have a substituent, or an alkoxy group which may have a substituent.
    Type: Application
    Filed: April 5, 2012
    Publication date: May 8, 2014
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Atsushi Kameyama, Takashi Suzuki, Ryuichi Ueno, Isao Ishikura
  • Patent number: 8716502
    Abstract: A process for preparing a divinylarene oxide including (a) reacting (i) at least one divinylarene; (ii) at least one peroxycarboximidic acid; (iii) at least one solvent; and (iv) at least one basic compound, under reaction conditions to form a reaction effluent containing a divinylarene oxide product; and then (b) evaporating the reaction effluent of step (a) to form a concentrate containing the divinylarene oxide product; and wherein the concentrate separates into two liquid phases.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: May 6, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Leming Gu, William W. Fan, David Jean, Eric B. Ripplinger, Bruce D. Hook, David H. West
  • Patent number: 8716501
    Abstract: [Problem] There is provided a method for producing an oxygen-containing compound safely and with improved reaction efficiency, in which an undesired peroxide is unlikely to be produced, and efficient heat exchange of the ozonization can be achieved.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: May 6, 2014
    Assignee: Utsunomiya University
    Inventor: Masaaki Yoshida
  • Patent number: 8703984
    Abstract: This invention relates to a process for converting ethylene to ethylene oxide comprising: flowing reactants comprising ethylene and oxygen or a source of oxygen in a microchannel reactor in contact with a catalyst to form a product comprising ethylene oxide, the reactants undergoing an exothermic reaction in the microchannel reactor; and transferring heat from the microchannel reactor to a heat exchanger.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: April 22, 2014
    Assignee: Velocys, Inc.
    Inventors: Terry Mazanec, Anna Lee Tonkovich, Wayne W. Simmons, Francis P. Daly, Richard Q. Long, Laura J. Silva
  • Publication number: 20140100379
    Abstract: The carrier of the present invention includes at least 85 wt percent alpha alumina, at least 0.06 wt percent SiO2 and no more than 0.04 wt percent Na2O. The carrier has a water absorption no greater than 0.35 g/g and a ratio of water absorption (g/g) to surface area (m2/g) no greater than 0.50 g/m2. Another aspect of the invention is a catalyst for the epoxidation of olefins which comprises the above described carrier and silver dispersed thereon, where the carrier has a monomodal, bimodal or multimodal pore distribution and where the quantity of silver is between 5 and 50 wt %, relative to the weight of the catalyst. A reactor to system for the epoxidation of olefins is also disclosed.
    Type: Application
    Filed: October 10, 2012
    Publication date: April 10, 2014
    Inventors: Michael A. Richard, John R. Lockemeyer
  • Publication number: 20140100354
    Abstract: Novel peptoids are disclosed that have a formula represented by the following formulae Ia and Ib: wherein X, Y, R, and n are as described herein. The peptoids demonstrate catalytic activity and are useful in substrate-selective catalytic transformations, including asymmetric catalytic transformations.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 10, 2014
    Inventors: Kent KIRSHENBAUM, Galia Maayan, Michael Ward
  • Publication number: 20140080219
    Abstract: The present invention relates to methods for qualifying material for using in the cleaning of alkylene oxide equipment. Qualified material is not expected to contribute to the formation of determinable amounts of alkylene oxide by-products. Methods of cleaning alkylene oxide equipment, and alkylene oxide processes incorporating these methods are also provided.
    Type: Application
    Filed: May 10, 2012
    Publication date: March 20, 2014
    Applicant: DOW TECHNOLOGY INVESTMENTS, LLC
    Inventor: Paul Victor Hinman
  • Patent number: 8674122
    Abstract: A process for preparing a divinylarene dioxide including reacting (a) at least one divinylarene; (b) at least one peroxycarboximidic acid; (c) at least one solvent; and (d) at least one basic compound, under conditions to form a reaction mixture containing a divinylarene dioxide product; and then separating the divinylarene dioxide product from the other reaction mixture components to obtain a purified divinylarene dioxide product.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: March 18, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Eric B. Ripplinger, David Jean, David L. Burow, Khiet T. Pham, Gyongyi Gulyas, Bruce D. Hook
  • Patent number: 8674124
    Abstract: A process for the preparation of an organic reactive intermediate that contains a combination of epoxy groups, hydroxy groups and unsaturated groups wherein the process can be utilized to control the amounts of each of the functional groups in the final product. The reactive intermediates are prepared from natural triglyceride plant and animal oils containing unsaturation.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: March 18, 2014
    Assignee: Biobased Technologies LLC
    Inventors: Trevor Newbold, Sandra Mae Newbold, Srikanth Yalamanchili
  • Publication number: 20140066642
    Abstract: The present invention provides an efficient method of synthesizing and purifying dianhydrohexitols such as dianhydrogalactitol. In general, as applied to dianhydrogalactitol, the method comprises: (1) reacting dulcitol with a concentrated solution of hydrobromic acid at a temperature of about 80° C. to produce dibromogalactitol; (2) reacting the dibromogalactitol with potassium carbonate in t-butanol to produce dianhydrogalactitol; and (3) purifying the dianhydrogalactitol using a slurry of ethyl ether to produce purified dianhydrogalactitol. Another method produces dianhydrogalactitol from dulcitol; this method comprises: (1) reacting dulcitol with a reactant to convert the 1,6-hydroxy groups of dulcitol to an effective leaving group to generate an intermediate; and (2) reacting the intermediate with an inorganic weak base to produce dianhydrogalactitol through an intramolecular SN2 reaction. Other methods for the synthesis of dianhydrogalactitol from dulcitol are described.
    Type: Application
    Filed: November 5, 2013
    Publication date: March 6, 2014
    Applicant: Del Mar Pharmaceuticals
    Inventors: Dennis M. BROWN, Mike Tso-Ping LI
  • Publication number: 20140046079
    Abstract: A method for preparing an epoxide is disclosed. The method for preparing an epoxide includes the step of performing a reaction of an alkene and oxidant in the presence of a Ti—Si molecular sieve as a catalyst, and increases the conversion rate of hydrogen peroxide and the yield of the epoxide.
    Type: Application
    Filed: September 13, 2012
    Publication date: February 13, 2014
    Applicant: China Petrochemical Development Corporation Taipei (Taiwan)
    Inventors: Yu-Chuan Hsu, Cheng-Fa Hsieh, I-Hui Lin
  • Publication number: 20130296586
    Abstract: The present invention relates to a direct conversion of olefin to olefin oxide, which are important and versatile intermediates used in the production of a large variety of valuable consumer products such as polyurethane foams, polymers, alkylene glycol, cosmetics, food emulsifiers and as fumigants and insecticides. More specifically, the present invention provides a process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a halogen compound additive and a catalyst comprising copper, ruthenium or both thereof.
    Type: Application
    Filed: January 18, 2012
    Publication date: November 7, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Anusorn Seubsai, Selim Senkan, Yoshihiko Ohishi, Carlos Gustavo Knapp Bjeren
  • Patent number: 8569525
    Abstract: The present invention provides a process for producing ethylene oxide, comprising (a) cracking an ethane-comprising feed in a cracking zone under cracking conditions to obtain olefins including at least ethylene and hydrogen; (b) converting an oxygenate feedstock in an oxygenate-to-olefin zone to obtain olefins, including at least ethylene; providing at least part of the ethylene obtained in step (a) and /or (b) to an ethylene oxidation zone together with a feed containing oxygen and oxidizing ethylene to obtain at least ethylene oxide and carbon dioxide. At least part of the oxygenate feedstock is obtained by providing carbon dioxide obtained in step (c) and a feed containing hydrogen to an oxygenate synthesis zone and synthesizing oxygenates, which feed containing hydrogen comprises hydrogen obtained in step (a).
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: October 29, 2013
    Assignee: Shell Oil Company
    Inventors: Leslie Andrew Chewter, Herve Henry, Jeroen Van Westrenen
  • Publication number: 20130281722
    Abstract: A process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a catalyst comprising a copper oxide and a tellurium oxide.
    Type: Application
    Filed: December 15, 2011
    Publication date: October 24, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yoshihiko Ohishi, Anusorn Seubsai, Selim Senkan
  • Patent number: 8558020
    Abstract: The present invention refers to an aqueous hydrogen peroxide solution having a hydrogen peroxide concentration [H2O2] expressed as % by weight of the solution and an apparent pH of from pHmin to pHmax, such that pHmin=3.45?0.0377×[H2O2], and pHmax=3.76?0.0379×[H2O2]. The present invention also relates to a process for the preparation of said hydrogen peroxide solution and the use of said solution in a process for the epoxidation of olefins.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: October 15, 2013
    Assignee: Solvay (Societe Anonyme)
    Inventors: Armin T. Liebens, Jean-Pierre Ganhy, Jean-Pierre Catinat, Koen Vermeiren
  • Publication number: 20130261322
    Abstract: The present invention relates to an improved process for preparing mono and poly epoxy functionalized fatty acids, their esters and mixtures thereof using solid catalyst i.e. supported group VIb metal oxide, said support comprising silica, alumina and mixtures thereof, optionally with a promoter from group VA wherein the group VIB metal oxide content in the catalyst is 5-20 wt % of support.
    Type: Application
    Filed: September 22, 2011
    Publication date: October 3, 2013
    Applicant: Council of Scientific and Industrial Research
    Inventors: Srinivas Darbha, Jitendra Kumar Satyarthi
  • 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
  • Publication number: 20130245291
    Abstract: The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of contacting a stream comprising C4+ olefins with a zeolite-comprising catalyst at a temperature in the range of from 350 to 1000° C. and retrieving an olefinic product stream comprising: ethylene and/or propylene, and a C4+ hydrocarbon fraction, comprising paraffins, normal olefins and iso-olefins; The C4+ hydrocarbon fraction is recycled while part of the fraction is purged. The part of the C4+ hydrocarbon with is purged is treated to extract C4+ isoolefins as tert-alkyl ethers. At least part of tert-alkyl ethers are converted to further ethylene and propylene.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 19, 2013
    Applicant: SHELL OIL COMPANY
    Inventors: Sivakumar SADASIVAN VIJAYAKUMARI, Jeroen VAN WESTRENEN
  • Publication number: 20130245293
    Abstract: The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of providing a hydrocarbon stream, comprising C4+ normal olefins and C4+ iso-olefins; converting C4+ isoolefins to tert-alkyl ether and separating the ethers from the hydrocarbon stream; isomersing the C4+ normal olefins to iso-olefins and converting C4+ isoolefins to tert-alkyl ether and separating the ethers from the hydrocarbon stream; converting the obtained tert-alkyl ether to ethylene and propylene by contacting the tert-alkyl ether with a molecular sieve-comprising catalyst and retrieving an olefinic product.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 19, 2013
    Applicant: SHELL OIL COMPANY
    Inventors: Sivakumar SADASIVAN VIJAYAKUMARI, Jeroen VAN WESTRENEN
  • Publication number: 20130245295
    Abstract: The present invention provides a process for preparing ethylene and propylene and a butadiene-enriched product, comprising the steps of: a) providing a C4 hydrocarbon stream, comprising iso-olefins and butadiene. b) subjecting the C4 hydrocarbon stream to an etherification process, wherein the iso-olefins are converted with methanol and/or ethanol to an tert-alkyl ether in the presence of a catalyst, wherein the molar ratio of alcohol to iso-olefin is maintained above 1, and retrieving an etherification product stream; c) separating the etherification product stream into an ether-enriched stream and a butadiene-enriched product; d) converting the tert-alkyl ether in the ether-enriched stream to ethylene and/or propylene by contacting least part of the ether-enriched stream with a molecular sieve-comprising catalyst at a temperature in the range of from 350 to 1000° C. and retrieving an olefinic product comprising ethylene and/or propylene.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 19, 2013
    Applicant: SHELL OIL COMPANY
    Inventor: Jeroen VAN WESTRENEN
  • Publication number: 20130245294
    Abstract: The present invention provides a method for start-up of an Oxygenate-to-Olefins process, which process comprises the steps: a) providing an oxygenate-comprising feedstock to an Oxygenate-to-Olefins reaction zone and contacting the feedstock with a zeolite-comprising catalyst at a temperature in the range of from 450 to 700° C. ° C., to obtain an reaction product containing olefins; b) separating the reaction product obtained in step a) in at least a product fraction containing ethylene and/or propylene and a product fraction containing C4+ olefins; c) recycling at least part of the C4+ olefins in the product fraction containing C4+ olefins to the Oxygenate-to-Olefins reaction zone in step (a), characterised in that upon start-up the oxygenate-comprising feedstock initially comprises a first amount of externally supplied tert-alkyl ether and subsequently the amount of externally supplied tert-alkyl ether in the oxygenate-comprising feedstock is reduced.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 19, 2013
    Applicant: SHELL OIL COMPANY
    Inventors: Leslie Andrew CHEWTER, Rajaram RAMESH, Sivakumar SADASIVAN VIJAYAKUMARI, Jeroen VAN WESTRENEN
  • Publication number: 20130245221
    Abstract: The present invention provides a process preparing ethylene and propylene, comprising the step of: a) contacting a feed comprising a tert alkyl ether obtained from an etherification reaction between ethanol and a tertiary iso-olefin with a zeolite-comprising catalyst at a temperature in the range of from 350 to 1000° C. to obtain a olefinic product comprising ethylene and propylene.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 19, 2013
    Applicant: SHELL OIL COMPANY
    Inventors: Leslie Andrew CHEWTER, Sivakumar SADASIVAN VIJAYAKUMARI, Jeroen VAN WESTRENEN
  • Publication number: 20130245292
    Abstract: The present invention provides a process for preparing ethylene and/or propylene and an iso-olefin-depleted olefinic product, comprising the steps of: a) providing a C5 hydrocarbon-comprising stream, comprising C5 cyclopentene and C5 iso-olefins; b) subjecting the C5 hydrocarbon-comprising stream to an etherification process with methanol and/or ethanol wherein at least part of the C5 iso-olefins are converted with methanol and/or ethanol to an tert-alkyl ether, and retrieving an etherification product stream; c) separating at least part of the etherification product stream into at least an ether-enriched stream and a first iso-olefin-depleted olefinic product; d) converting at least part of the tert-alkyl ether in the ether-enriched stream to ethylene and/or propylene by contacting at least part of the ether-enriched stream with a molecular sieve-comprising catalyst at a temperature in the range of from 350 to 1000° C. and retrieving a second olefinic product comprising ethylene and/or propylene.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 19, 2013
    Applicant: SHELL OIL COMPANY
    Inventors: Leslie Andrew CHEWTER, Rajaram RAMESH, Sivakumar SADASIVAN VIJAYAKUMARI, Jeroen VAN WESTRENEN
  • Publication number: 20130245290
    Abstract: The present invention provides a process for preparing ethylene and propylene, comprising the step of: a) contacting a feed comprising methanol, ethanol and C4+ olefins with a catalyst, comprising ZSM-5 having a silica to alumina ratio in the range of from 40 to 100, at a temperature in the range of from 350 to 1000° C. to obtain a olefinic product comprising ethylene and propylene.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 19, 2013
    Applicant: SHELL OIL COMPANY
    Inventors: Sivakumar SADASIVAN VIJAYAKUMARI, Jeroen VAN WESTRENEN
  • Publication number: 20130237714
    Abstract: The present invention provides a process for preparing ethylene and/or propylene and an iso-olefin-depleted C4 olefinic product, comprising the steps of: a) providing a C4 hydrocarbon stream, comprising normal olefins and iso-olefins; b) subjecting the C4 hydrocarbon stream to an etherification process with methanol and/or ethanol wherein at least part of the iso-olefins are converted with methanol and/or ethanol to an tert-alkyl ether, and retrieving an etherification product stream; c) separating at least part of the etherification product stream into at least an ether-enriched stream and a first iso-olefin-depleted C4 olefinic product; d) converting at least part of the tert-alkyl ether in the ether-enriched stream to ethylene and/or propylene by contacting least part of the ether-enriched stream with a molecular sieve-comprising catalyst at a temperature in the range of from 350 to 1000° C. and retrieving a second olefinic product comprising ethylene and/or propylene.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 12, 2013
    Applicant: SHELL OIL COMPANY
    Inventors: Sivakumar SADASIVAN VIJAYAKUMARI, Jeroen VAN WESTRENEN
  • Publication number: 20130237715
    Abstract: The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of: a) providing an oxygenate-comprising feedstock; b) contacting the oxygenate-comprising feedstock with a molecular sieve-comprising catalyst at a temperature in the range of from 450 to 700° C. and converting at least part of the oxygenate into an olefinic product comprising ethylene and/or propylene; and c) retrieving the olefinic product, wherein the oxygenate-comprising feedstock comprises in the range of from 1 to 97 wt % of at least one tert-alkyl ether selected from the group MTBE, ETBE, TAME and TAEE, based on the weight of the oxygenates in the oxygenate-comprising feedstock, and further comprises methanol and/or DME.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 12, 2013
    Applicant: SHELL OIL COMPANY
    Inventors: Leslie Andrew CHEWTER, Rajaram RAMESH, Jeroen VAN WESTRENEN
  • Publication number: 20130237713
    Abstract: The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of contacting a stream comprising C4+ olefins with a zeolite-comprising catalyst to retrieve an olefinic product stream comprising ethylene and/or propylene, and a C4+ hydrocarbon fraction, comprising paraffins, normal olefins and iso-olefins. The C4+ hydrocarbon fraction is subjected to an etherification process with wherein at least part of the iso-olefins are converted with methanol and/or ethanol to an tert-alkyl ether and an etherification product stream is retrieved and separated into an ether-enriched stream and an iso-olefin-depleted C4+ hydrocarbon stream. Part of the iso-olefin-depleted C4+ hydrocarbon stream from the process to purge part of the paraffinic C4+ hydrocarbons while another part of the iso-olefin-depleted C4+ hydrocarbon stream is recycled.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 12, 2013
    Applicant: SHELL OIL COMPANY
    Inventors: Leslie Andrew CHEWTER, Rajaram RAMESH, Jeroen VAN WESTRENEN
  • Patent number: 8524927
    Abstract: This invention relates to a process comprising reacting ethylene and oxygen or a source of oxygen in a process microchannel in the presence of a catalyst to form a product comprising ethylene oxide.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: September 3, 2013
    Assignee: Velocys, Inc.
    Inventors: Terry Mazanec, Soumitra Desmukh, Laura J. Silva, Torsten Maurer, Radwan Abdallah, Frank Rosowski
  • Publication number: 20130211112
    Abstract: A process for producing an alkylene oxide by olefin epoxidation, wherein said process comprises the steps of: (1) in a first olefin epoxidation condition, in the presence of a first solid catalyst, a first mixed stream containing a solvent, an olefin and H2O2 is subjected to an epoxidation in one or more fixed bed reactors and/or one or more moving bed reactors until the conversion of H2O2 reaches 50%-95%, then, optionally, the resulting reaction mixture obtained in the step (1) is subjected to a separation to obtain a first stream free of H2O2 and a second stream containing the unreacted H2O2, and the olefin is introduced to the second stream to produce a second mixed stream, or optionally, the olefin is introduced to the reaction mixture obtained in the step (1) to produce a second mixed stream; (2) in a second olefin epoxidation condition, the reaction mixture obtained in the step (1) or the second mixed stream obtained in the step (1) and a second solid catalyst are introduced to one or more slurry bed re
    Type: Application
    Filed: October 11, 2011
    Publication date: August 15, 2013
    Applicant: CHINA PETROLEUM & CHEMICAL CORPORATION
    Inventors: Hua Li, Min Lin, Xiaoju Wu, Wei Wang, Chijian He, Jizao Gao, Xingtian Shu, Shuanghua Wan, Bin Zhu
  • Publication number: 20130203998
    Abstract: The present invention relates to drug derivatives and linkers. The invention specifically relates to compounds and methods of phosphonates and linkers, that are useful as carriers for imaging agents and useful in the treatment of various bone diseases.
    Type: Application
    Filed: March 14, 2013
    Publication date: August 8, 2013
    Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventor: UNIVERSITY OF SOUTHERN CALIFORNIA
  • Publication number: 20130204018
    Abstract: The present invention relates to a micropowder, wherein the particles of the micropowder have a Dv10 value of at least 2 micrometer and the micropowder comprises mesopores which have an average pore diameter in the range of from 2 to 50 nm and comprise, based on the weight of the micropowder, at least 95 weight-% of a microporous aluminum-free zeolitic material of structure type MWW containing titanium and zinc.
    Type: Application
    Filed: February 5, 2013
    Publication date: August 8, 2013
    Inventors: Andrei-Nicolae PARVULESCU, Ulrich Mueller, Joaquim Henrique Teles, Bianca Seelig, Philip Kampe, Markus Weber, Robert Bayer, Karsten Seidel, Peter Resch
  • Patent number: 8470729
    Abstract: Provided is a method for storing a high active titanium-containing silicon oxide catalyst, characterized in that the catalyst is stored at a relative humidity of 60% or less. The method can be used for a reaction, for example, wherein an oxirane compound is prepared from hydroperoxide and olefinic compound, even after the catalyst has been stored for a long period of time. The titanium-containing silicon oxide catalyst can be suitably employed as a catalyst satisfying the following requirements: (1) an average pore diameter is 10 ? or more, (2) the pores accounting for 90% or more of the total pore volume have a pore diameter of 50 to 200 ?, and (3) a specific pore volume is 0.2 cm cm3/g or more.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: June 25, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Jun Yamamoto
  • Publication number: 20130150290
    Abstract: The invention relates to crystalline peptide keto epoxide compounds, methods of their preparation, and related pharmaceutical compositions. This invention also relates to methods for the preparation of amino acid keto-epoxides. Specifically, allylic ketones are stereoselectively converted to the desired keto epoxides.
    Type: Application
    Filed: February 1, 2013
    Publication date: June 13, 2013
    Applicant: Onyx Therapeutics, Inc.
    Inventor: Onyx Therapeutics, Inc.
  • Publication number: 20130144073
    Abstract: At least one method to efficiently produce alkylene oxide from partial oxidation of hydrocarbons using a high efficiency heterogeneous catalyst in a fixed bed enclosed within a reaction vessel, and a reaction vessel constructed to facilitate the same.
    Type: Application
    Filed: March 17, 2011
    Publication date: June 6, 2013
    Applicant: THE DOW CHEMICAL INVESTMENTS LLC
    Inventors: Max M. Tirtowidjojo, Subrata Sen, Christina Zarth, Pramod D. Patil