Using Transition Metal-containing Catalyst Patents (Class 585/418)
  • Patent number: 10399913
    Abstract: In a process for upgrading paraffins and olefins, a first feed comprising C14? olefins is contacted with an oligomerization catalyst in a first reaction zone under conditions effective for oligomerization of olefins to higher molecular weight hydrocarbons. Deactivated catalyst is removed from the first reaction zone at a first temperature and is contacted with an oxygen-containing gas and a hydrocarbon-containing fuel in a regeneration zone to regenerate the catalyst and raise the temperature of the catalyst to a second, higher temperature. A second feed comprising C14? paraffins is contacted with the regenerated catalyst in a second reaction zone to convert at least some of the paraffins in the second feed to a reaction effluent comprising olefins, aromatic hydrocarbons and regenerated catalyst; and the reaction effluent is supplied to the first reaction zone. A system for performing such a process and a product of such a process are also provided.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: September 3, 2019
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Mohsen N. Harandi, John Dusseault
  • Patent number: 9988325
    Abstract: The invention relates to the hydrocarbon upgrading to produce aromatic hydrocarbon, to equipment and materials useful in such upgrading, and to the use of such upgrading for, e.g., producing aromatic hydrocarbon natural gas. The upgrading can be carried out in the presence of a dehydrocyclization catalyst comprising at least one dehydrogenation component and at least one molecular sieve.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: June 5, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Paul F. Keusenkothen, John S. Buchanan, Samia Ilias, Mayank Shekhar
  • Patent number: 9908094
    Abstract: A system and method converts first carbon chain condensable fractions of wet natural gas, the first carbon chain fractions having first carbon chains, into liquefiable highly-branched hydrocarbons by cavitating first carbon chain condensable fractions of wet natural gas with natural gas; irradiating the natural gas cavitated condensable fractions of wet natural gas with an electron beam to create second carbon chain fractions; mixing the second carbon chain fractions with natural gas enriched with alkynes and alkenes to a create enriched natural gas and second carbon chain fractions mixture; irradiating the enriched natural gas and second carbon chain fractions mixture with an electron beam to create an irradiated gas mixture; cooling the irradiated gas mixture; and removing liquefied highly-branched hydrocarbons.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: March 6, 2018
    Inventor: Jacob G. Appelbaum
  • Patent number: 9845272
    Abstract: The invention relates to the conversion of light hydrocarbon to higher-value hydrocarbon, such as aromatic hydrocarbon, to equipment and materials useful in such conversion, and to the use of such conversion for, e.g., natural gas upgrading. The conversion can be carried out in two stages, with each stage containing a dehydrocyclization catalyst comprising at least one dehydrogenation component and at least one molecular sieve.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: December 19, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: John S. Buchanan, Samia Ilias, Mayank Shekhar, Paul F. Keusenkothen
  • Patent number: 9295966
    Abstract: A system or method converts long carbon chain fractions of crude oil into highly-branched liquefiable hydrocarbons by cavitating long carbon chain fractions of crude oil with natural gas. The cavitated long carbon chain fractions of crude oil are irradiated with an electron beam in combination with an electron beam sustained non-thermal plasma discharge to create short carbon chain fractions. The short carbon chain fractions are enriched with natural gas and irradiated with an electron beam in combination with an electron beam sustained non-thermal plasma discharge. The irradiated gas mixture is cooled so that the liquefiable highly-branched hydrocarbons can be removed.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: March 29, 2016
    Inventor: Jacob G. Appelbaum
  • Patent number: 9273252
    Abstract: A method for producing aromatic compounds from fatty acid oils including heating a fatty acid oil to a temperature between about 100° C. to about 800° C. at a pressure between about vacuum conditions and about 200 psia for a time sufficient to crack the oil and produce a cracked fatty acid oil; removing undesired materials, unreacted oil, heavy ends, and light ends from the cracked fatty acid oil; heating the resulting purified cracked fatty acid oil to a temperature between about 100° C. to about 800° C. at a pressure between about vacuum conditions and about 200 psia for a time sufficient to reform alkenes and alkanes in the cracked fatty acid oil into aromatic compounds and produce a reformed fatty acid oil; and extracting components from the reformed fatty acid oil to produce a mixture of chemical products containing between 5% and 90% aromatic compounds by weight.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: March 1, 2016
    Assignee: University of North Dakota
    Inventors: Wayne Seames, Brian Tande
  • Patent number: 9255042
    Abstract: A producing method of monocyclic aromatic hydrocarbons from the oil feedstock having a 10 volume % distillation temperature of more than or equal to 140° C. and a 90 volume % distillation temperature of less than or equal to 380° C. by bringing into contact with an aromatic production catalyst includes the steps of: introducing the oil feedstock into a cracking and reforming reaction apparatus housing the aromatic production catalyst; bringing the oil feedstock and the aromatic production catalyst into contact with each other at the inside of the cracking and reforming reaction apparatus; heating the oil feedstock in advance before introducing the oil feedstock into the cracking and reforming reaction apparatus and forming a two-phase gas-liquid stream; separating the two-phase gas-liquid stream into a gas fraction and a liquid fraction; and introducing the gas fraction and the liquid fraction at different positions of the cracking and reforming reaction apparatus.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: February 9, 2016
    Assignees: JX Nippon Oil & Energy Corporation, CHIYODA CORPORATION
    Inventors: Shinichiro Yanagawa, Yasuyuki Iwasa, Susumu Yasui, Yoshishige Sugi, Atsushi Fukui, Atsuro Nagumo
  • Patent number: 9238601
    Abstract: Methods of removing free oxygen from a hydrocarbon stream are described. A hydrocarbon stream containing free oxygen is contacted with an adsorbent comprising a metal in a reduced state. The free oxygen in the hydrocarbon stream reacts with the metal in the reduced state to form oxidized metal and a reduced oxygen hydrocarbon stream. Syngas is made from a portion of the reduced oxygen hydrocarbon stream. A regeneration gas stream comprising a mixture of the syngas and another portion of the reduced oxygen hydrocarbon stream is contacted with the oxidized metal to reduce the oxidized metal to form the metal in the reduced state.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: January 19, 2016
    Assignee: UOP LLC
    Inventors: Mark G. Riley, Shain-Jer Doong
  • Patent number: 9221692
    Abstract: The present invention relates to a process for preparing at least one sheet silicate comprising Ga and/or Zn, and based thereon, a framework silicate, preferably of the RRO structure type, to the sheet silicate and framework silicate themselves and to the uses of the silicates, especially of the framework silicate, preferably as catalysts.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: December 29, 2015
    Assignees: BASF SE, RUBITEC-GESELLSCHAFT FUER INNOVATION UND TECHNOLOGIE DER RUHR-UNIVERSITAET BOCHUM MBH
    Inventors: Ulrich Mueller, Natalia Trukhan, Hermann Gies, Bart Tijsebaert, Csaba Varszegi, Dirk De Vos
  • Patent number: 9079163
    Abstract: The present invention relates to a novel catalyst which has a molecular sieving effect (or shape selectivity) and has excellent catalytic activity, and particularly to a catalyst which includes a core made of a zeolite particle having a particle size of not more than 10 ?m and a zeolite layer covering the core, wherein as measured by X-ray photoelectron spectroscopy, an outermost surface of the catalyst has a silica/alumina molar ratio of not less than 800, the core made of the zeolite particle has an average silica/alumina molar ratio of not more than 300, and the zeolite layer has an aluminum concentration increasing inward from an outer surface of the catalyst.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: July 14, 2015
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Chikanori Nakaoka, Eri Kosaka
  • Patent number: 8981169
    Abstract: A process for converting a gaseous hydrocarbon feed comprising methane to an aromatic hydrocarbon is integrated with liquefied natural gas (LNG) and/or pipeline gas production. The gaseous hydrocarbon feed is supplied to a conversion zone comprising at least one dehydroaromatization catalyst and is contacted with the catalyst under conversion conditions to produce a gaseous effluent stream comprising at least one aromatic compound, unreacted methane and H2. The gaseous effluent stream is then separated into a first product stream comprising said at least one aromatic compound and a second product stream comprising unreacted methane and H2. The second product stream is further separated into a methane-rich stream and a hydrogen-rich stream and at least part of the methane-rich stream is passed to LNG and/or pipeline gas production.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: March 17, 2015
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Robert D. Denton, Garth M. Norman, James R. Lattner
  • Publication number: 20150018590
    Abstract: In an embodiment a catalyst comprises a medium or large pore zeolite having germanium incorporated into the zeolite framework. The zeolite can have a pore structure that is one dimensional, two dimensional or three dimensional. A metal selected from Group 10 can be deposited on the zeolite. In an embodiment, a process for synthesizing the zeolite comprises preparing a medium pore zeolite containing germanium in the framework of the zeolite and calcining the zeolite. In an embodiment, the catalyst can be used in a process for the conversion of hydrocarbons comprising contacting a hydrocarbon stream containing alkanes, olefins, or mixtures thereof having 2 to 12 carbon atoms per molecule with the catalyst and recovering the product.
    Type: Application
    Filed: April 29, 2014
    Publication date: January 15, 2015
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Scott A. Stevenson, Alla K. Khanmamedova, Dustin B. Farmer, Scott F. Mitchell, Jim Vartuli
  • Patent number: 8921634
    Abstract: A new family of aluminosilicate zeolites designated UZM-44 has been synthesized. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where “n” is the mole ratio of Na to (Al+E), M represents a metal or metals from zinc, Group 1, Group 2, Group 3 and or the lanthanide series of the periodic table, “m” is the mole ratio of M to (Al+E), “k” is the average charge of the metal or metals M, T is the organic structure directing agent or agents, and E is a framework element such as gallium. UZM-44 has catalytic properties for carrying processes involving contacting at least one low carbon number aliphatic hydrocarbon having from 1 to about 4 carbon atoms per molecule with the catalytic composite comprising UZM-44 to produce at least one aromatic hydrocarbon.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: December 30, 2014
    Assignee: UOP LLC
    Inventors: Timur V. Voskoboynikov, Lisa M. King, Vincent G. Mezera, Christopher P. Nicholas, Mark A. Miller
  • Publication number: 20140371500
    Abstract: A method for removing tightly bound sodium from a zeolitic support comprising contacting the support with a sodium specific removal agent to produce a treated support. A method comprising providing an aromatization catalyst comprising a treated support, and contacting the aromatization catalyst with a hydrocarbon feed in a reaction zone under conditions suitable for the production of an aromatic product. A catalyst support comprising an L-zeolite having less than 0.35 wt. % sodium.
    Type: Application
    Filed: August 28, 2014
    Publication date: December 18, 2014
    Inventor: Gyanesh P. Khare
  • Patent number: 8912378
    Abstract: A new family of coherently grown composites of TUN and IMF zeotypes has been synthesized and shown to be effective catalysts for dehydrocyclodimerization reactions. These zeolites are represented by the empirical formula. NanMmn+RrQqAl1-xExSiyOz where M represents zinc or a metal or metals from Group 1, Group 2, Group 3 or the lanthanide series of the periodic table, R is an A,?-dihalosubstituted paraffin such as 1,4-dibromobutane, Q is a neutral amine containing 5 or fewer carbon atoms such as 1-methylpyrrolidine and E is a framework element such as gallium. The process involves contacting at least one aliphatic hydrocarbon having from 2 to about 6 carbon atoms per molecule with the coherently grown composites of TUN and IMF zeotypes to produce at least one aromatic hydrocarbon.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: December 16, 2014
    Assignee: UOP LLC
    Inventors: Christopher P. Nicholas, Mark A. Miller
  • Patent number: 8907151
    Abstract: A new family of coherently grown composites of TUN and IMF zeotypes has been synthesized and shown to be effective catalysts in processes for converting at least one aliphatic hydrocarbon having from 1 to about 4 carbon atoms in a feedstream to provide at least one aromatic hydrocarbon. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where M represents zinc or a metal or metals from Group 1, Group 2, Group 3 or the lanthanide series of the periodic table, T is the organic structure directing agent or agents and E is a framework element such as gallium. The process involves contacting a low carbon number aliphatic hydrocarbon with the coherently grown composite of TUN and IMF zeotypes to produce at least an aromatic.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: December 9, 2014
    Assignee: UOP LLC
    Inventors: Timur V. Voskoboynikov, Christopher P. Nicholas, Mark A. Miller, Lisa M. King, Vincent G. Mezera
  • Patent number: 8889939
    Abstract: A process for dehydrocyclodimerization using a catalytic composite comprising at least one of a new family of aluminosilicate zeolites designated UZM-44 has been developed. These zeolites are represented by the empirical formula. NanMmk+TtAl1-xExSiyOz where “n” is the mole ratio of Na to (Al+E), M represents a metal or metals from zine, Group 1, Group 2, Group 3 and or the lanthanide series of the periodic table, “m” is the mole ratio of M to (Al+E), “k” is the average charge of the metal or metals M, T is the organic structure directing agent or agents, and E is a framework element such as gallium. UZM-44 has catalytic properties for carrying processes involving contacting at least one aliphatic hydrocarbon having from 2 to about 6 carbon atoms per molecule with the UZM-44 to produce at least one aromatic hydrocarbon.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: November 18, 2014
    Assignee: UOP LLC
    Inventors: Christopher P. Nicholas, Mark A. Miller
  • Patent number: 8871990
    Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting ethane with a dehyroaromatization aromatic catalyst which is comprised of about 0.005 to about 0.1% wt platinum, an amount of an attenuating metal which is no more than about 0.02% wt less than the amount of platinum, from about 10 to about 99.9% wt of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: October 28, 2014
    Assignee: Shell Oil Company
    Inventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar
  • Patent number: 8853480
    Abstract: When producing an aromatic hydrocarbon by a contact reaction of a lower hydrocarbon with a catalyst, the aromatic hydrocarbon is produced stably for a long time while maintaining a high aromatic hydrocarbon yield. In a process for producing an aromatic hydrocarbon by being equipped with a reaction step for obtaining the aromatic hydrocarbon by a contact reaction of a lower hydrocarbon with a catalyst and a regeneration step for regenerating the catalyst used in this reaction step, and by repeating the reaction step and the regeneration step, yield of the aromatic hydrocarbon is calculated at constant intervals of time. A yield as the standard is set up from this calculated yield. Based on the change of yield relative to this standard, the regeneration time of the regeneration step is prolonged. A threshold value is set up in the change of yield.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: October 7, 2014
    Assignee: Meidensha Corporation
    Inventors: Yuji Ogawa, Hongtao Ma
  • Patent number: 8809608
    Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting one or more lower alkanes with a dehydroaromatization aromatic catalyst which is comprised of 0.005 to 0.1% wt platinum, not more than 0.2% wt of an amount of an attenuating metal wherein the amount of platinum is not more than about 0.02% wt more than the amount of the attenuating metal, from about 10 to about 99.9% wt of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: August 19, 2014
    Assignee: Shell Oil Company
    Inventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar
  • Patent number: 8785704
    Abstract: The present invention relates to a process for nonoxidatively dehydroaromatizing a reactant stream comprising C1-C4-aliphatics by converting the reactant stream in the presence of a catalyst in a reaction zone 1 to a product stream P comprising aromatic hydrocarbons, and regenerating the catalyst whose activity has been reduced by deposited coke with a hydrogen-comprising mixture H in a reaction zone 2, wherein at least a portion of the deposited coke is converted to methane and at least a portion of the methane formed is fed to reaction zone 1.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: July 22, 2014
    Assignee: BASF SE
    Inventors: Frank Kiesslich, Achim Gritsch, Christian Schneider, Albena Kostova
  • Patent number: 8772563
    Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting ethane with a dehyroaromatization aromatic catalyst which is comprised of about 0.005 to about 0.1 wt % platinum, an amount of gallium which is equal to or greater than the amount of the platinum, from about 10 to about 99.9 wt % of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: July 8, 2014
    Assignee: Shell Oil Company
    Inventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar
  • Patent number: 8766026
    Abstract: A process is provided for producing aromatic hydrocarbons which comprises: (a) contacting a lower alkane feed with a solid particulate aromatic hydrocarbon conversion catalyst in a fixed bed reaction zone to produce aromatic hydrocarbons and other products, whereby the catalyst is at least partially deactivated by the formation of undesirable coke deposits, (b) periodically regenerating the catalyst under regeneration conditions, (c) separating aromatic hydrocarbons from the other products and unreacted lower alkanes, and (d) optionally recycling unreacted lower alkanes to the reaction zone wherein the fixed bed reaction zone additionally comprises a volume of a catalytically inactive solid.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: July 1, 2014
    Assignee: Shell Oil Company
    Inventors: Ye Mon Chen, Mahesh Venkataraman Iyer, Karel Martin Kapoun, Ann Marie Lauritzen, Ajay Madhav Madgavkar
  • Publication number: 20140171691
    Abstract: The present invention discloses a system for converting methanol or synthesis gas to liquid hydrocarbons with comparable energy content to gasoline within a mixed bed single reactor or double reactor systems. Varying catalyst composition and temperature profiles allow for significant tailoring of reaction conditions to the specific feedstocks or the desired products.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 19, 2014
    Applicant: PIONEER ENERGY INC.
    Inventors: Adam M. Kortan, Michael T. Kelly, Heather A. Rose, Robert M. Zubrin
  • Patent number: 8735310
    Abstract: To improve stability of catalytic performance, an aromatizing catalyst for converting lower hydrocarbons into aromatic compounds is regenerated. A regeneration process of the aromatizing catalyst according to the present invention includes the steps of: (a) reacting the aromatizing catalyst with a hydrogen gas in an atmosphere containing the hydrogen gas after using the aromatizing catalyst in an aromatizing reaction for converting lower hydrocarbons into aromatic compounds; (b) decreasing a temperature of the atmosphere containing the hydrogen gas reacted with the aromatizing catalyst, by supplying one of an inert gas and a reducing gas to the atmosphere; (c) reacting the aromatizing catalyst reacted with this inert gas, with an oxidizing gas; and (d) reacting the aromatizing catalyst reacted with the oxidizing gas, with a reducing gas.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: May 27, 2014
    Assignee: Meidensha Corporation
    Inventors: Hongtao Ma, Yuji Ogawa
  • Patent number: 8692043
    Abstract: A process for producing aromatic hydrocarbons which comprises (a) contacting ethane with a dehyroaromatization aromatic catalyst which is comprised of 0.005 to 0.1% wt platinum, an amount of iron which is equal to or greater than the amount of the platinum, from 10 to 99.9% wt of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: April 8, 2014
    Assignee: Shell Oil Company
    Inventors: Ann Marie Lauritzen, Ajay Madhav Madgavkar
  • Patent number: 8604262
    Abstract: A process for reforming a hydrocarbon stream is presented. The process involves splitting a naphtha feedstream to at least two feedstreams and passing each feedstream to separation reformers. The reformers are operated under different conditions to utilize the differences in the reaction properties of the different hydrocarbon components. The process utilizes a common catalyst, and common downstream processes for recovering the desired aromatic compounds generated.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: December 10, 2013
    Assignee: UOP LLC
    Inventors: David A. Wegerer, Kurt M. Vanden Bussche, Mark D. Moser
  • Publication number: 20130324760
    Abstract: A method of crystallizing a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 ?, said method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one hydroxide source (OH?), and water, said mixture having a solid-content in the range of from about 15 wt. % to about 50 wt. %; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr?1, wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr.
    Type: Application
    Filed: August 7, 2013
    Publication date: December 5, 2013
    Inventors: Ivy D. Johnson, Wenyih Frank Lai
  • Patent number: 8569555
    Abstract: A hydrocarbon aromatization process comprising adding a nitrogenate, an oxygenate, or both to a hydrocarbon stream to produce an enhanced hydrocarbon stream, and contacting the enhanced hydrocarbon stream with an aromatization catalyst, thereby producing an aromatization reactor effluent comprising aromatic hydrocarbons, wherein the catalyst comprises a non-acidic zeolite support, a group VIII metal, and one or more halides. Also disclosed is a hydrocarbon aromatization process comprising monitoring the presence of an oxygenate, a nitrogenate, or both in an aromatization reactor, monitoring at least one process parameter that indicates the activity of the aromatization catalyst, modifying the amount of the oxygenate, the nitrogenate, or both in the aromatization reactor, thereby affecting the parameter.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: October 29, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Christopher D. Blessing, Scott H. Brown, Tin-Tack Peter Cheung, David J. Glova, Daniel M. Hasenberg, Dennis L. Holtermann, Gyanesh P. Khare, Daniel B. Knorr, Jr.
  • Patent number: 8563794
    Abstract: A method of extending the life of an aromatization catalyst comprising identifying a rapid deactivation threshold (RDT) of the catalyst, and oxidizing the catalyst prior to reaching the RDT. A method of aromatizing a hydrocarbon comprising identifying a rapid deactivation threshold (RDT) for an aromatization catalyst, and operating an aromatization reactor comprising the catalyst to extend the Time on Stream of the reactor prior to reaching the RDT. A method of extending the life of an aromatization catalyst comprising predicting a rapid deactivation threshold (RDT) for an aromatization reactor by employing the catalyst in a reactor system under an accelerated fouling condition to identify a test rapid deactivation threshold (t-RDT), predicting the RDT for the aromatization reactor based upon the t-RDT, and oxidizing the catalyst prior to the predicted RDT to extend the Time on Stream of the aromatization catalyst.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: October 22, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Scott H. Brown, Tin-Tack Peter Cheung, Daniel P. Hagewiesche, Baiyi Zhao
  • Patent number: 8558045
    Abstract: A catalyst for aromatizing a lower hydrocarbon, in order to increase the amount of production of useful aromatic compounds, such as benzene and toluene, by improving the methane conversion rate, the benzene formation rate, the naphthalene formation rate and the BTX formation rate (or a total formation rate of benzene, toluene and xylene) is such that molybdenum and silver are loaded on a metallosilicate as a substrate. It is more preferable to obtain the aromatizing catalyst by loading molybdenum and silver after modifying a zeolite formed of the metallosilicate with a silane compound that has a molecular diameter larger than a pore diameter of the zeolite and that has an amino group, which selectively reacts at a Bronsted acid point of the zeolite, and a straight-chain hydrocarbon group.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: October 15, 2013
    Assignee: Meidensha Corporation
    Inventors: Shinichi Yamada, Tomohiro Yamada, Yuji Ogawa, Takuya Hatagishi, Yo Yamamoto, Yoshio Sugiyama
  • Patent number: 8552236
    Abstract: A catalyst for the conversion of methane to higher hydrocarbons including aromatic hydrocarbons comprises particles of a porous refractory material, crystals of a zeolite material grown within the pores of the refractory material, and at least one catalytically active metal or metal compound associated with the zeolite crystals.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: October 8, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Larry L. Iaccino
  • Publication number: 20130245349
    Abstract: This invention relates to a process for producing aluminium silicates in the form of zeolite L, as well as the intermediate and end products of this process. The invention further relates to the use of these aluminium silicates for the conversion or adsorption of hydrocarbons.
    Type: Application
    Filed: July 28, 2011
    Publication date: September 19, 2013
    Applicant: SUD-CHEMIE IP GMBH & CO. KG.
    Inventors: Olivier Larlus, Martin Claus, Rainer Albert Rakoczy
  • Publication number: 20130237734
    Abstract: A method comprising contacting a crystalline aluminosilicate with an organic acid to form an acid-treated support; contacting the acid-treated support with a Group IB metal compound and a Group IIIA element compound to form a catalyst precursor; and contacting the catalyst precursor with a silylating agent to form a silylated catalyst.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 12, 2013
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventor: An-Hsiang Wu
  • Patent number: 8530713
    Abstract: The present invention relates to a process for nonoxidative dehydroaromatization of aliphatic hydrocarbons by converting a reactant stream comprising aliphatic hydrocarbons in the presence of a catalyst which comprises at least one metallosilicate as a support, at least one element selected from the group of Mo, W and Re as an active component and at least one further transition metal which is not a noble metal as a dopant, wherein the catalyst is regenerated regularly with hydrogen under nonoxidative conditions. The further transition metal used is preferably Fe, Ni, Cu and Co.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: September 10, 2013
    Assignee: BASF SE
    Inventors: Frank Kiesslich, Joana Coelho Tsou, Alexander Schulz
  • Patent number: 8471083
    Abstract: A reforming process using a medium pore zeolite under conditions to facilitate the conversion of C8 paraffinic compounds to para-xylene is provided. Para-xylene is produced at greater than thermodynamic equilibrium concentrations using the process.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: June 25, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Ann Jia-Bao Liang, Stephen Joseph Miller, James Nathan Ziemer
  • Patent number: 8461404
    Abstract: A prolongated silica bound zeolite support comprising from about 85 wt % to about 95 wt % zeolite. A catalyst composition comprising a prolongated silica bound zeolite supporting at least one Group VIII metal and at least one halide. A process of making a prolongated silica bound zeolite support comprising mixing a zeolite, a prolongated silica, and water to form a mixture, and shaping the mixture into the prolongated silica bound zeolite support. A process of making a prolongated silica bound zeolite catalyst comprising mixing a zeolite, a prolongated silica, and water to form a mixture, shaping the mixture into a prolongated silica bound zeolite support, and adding one or more catalytic compounds to the prolongated silica bound zeolite support to form the prolongated silica bound zeolite catalyst.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: June 11, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventor: Gyanesh P. Khare
  • Publication number: 20130123552
    Abstract: The invention provides methods and compositions useful for synthesizing alkylaromatics from an n-alkanes.
    Type: Application
    Filed: October 22, 2012
    Publication date: May 16, 2013
    Inventors: Alan Goldman, Ritu Ahuja, William Schinski
  • Patent number: 8362310
    Abstract: A hydrocarbon aromatization process comprising adding a nitrogenate, an oxygenate, or both to a hydrocarbon stream to produce an enhanced hydrocarbon stream, and contacting the enhanced hydrocarbon stream with an aromatization catalyst, thereby producing an aromatization reactor effluent comprising aromatic hydrocarbons, wherein the catalyst comprises a non-acidic zeolite support, a group VIII metal, and one or more halides. Also disclosed is a hydrocarbon aromatization process comprising monitoring the presence of an oxygenate, a nitrogenate, or both in an aromatization reactor, monitoring at least one process parameter that indicates the activity of the aromatization catalyst, modifying the amount of the oxygenate, the nitrogenate, or both in the aromatization reactor, thereby affecting the parameter.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: January 29, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Christopher D. Blessing, Scott H. Brown, Tin-Tack Peter Cheung, David J. Glova, Daniel M. Hasenberg, Dennis L. Holtermann, Gyanesh P. Khare, Daniel B. Knorr, Jr.
  • Publication number: 20130012747
    Abstract: In manufacturing aromatic hydrocarbons by causing a contact reaction between a lower hydrocarbon and a catalyst, the aromatic hydrocarbons are stably produced over a long period of time while maintaining high aromatic hydrocarbon yields. The process includes a reaction process of initiating the contact reaction between the lower hydrocarbon and the catalyst thereby obtaining the aromatic hydrocarbons and hydrogen, and a regeneration process of regenerating the catalytic activity by bringing hydrogen into contact with the catalyst used in the reaction process. The reaction process and the regeneration process are repeated thereby producing the aromatic hydrocarbons and hydrogen. In the reaction process, carbon monoxide is added to the lower hydrocarbons and additionally a reaction temperature is set at higher than 800° C.
    Type: Application
    Filed: February 10, 2011
    Publication date: January 10, 2013
    Applicant: Meidensha Corporation
    Inventors: Hongtao Ma, Yo Yamamoto, Yuji Ogawa
  • Patent number: 8288603
    Abstract: A method of extending the life of an aromatization catalyst comprising identifying a rapid deactivation threshold (RDT) of the catalyst, and oxidizing the catalyst prior to reaching the RDT. A method of aromatizing a hydrocarbon comprising identifying a rapid deactivation threshold (RDT) for an aromatization catalyst, and operating an aromatization reactor comprising the catalyst to extend the Time on Stream of the reactor prior to reaching the RDT. A method of characterizing an aromatization catalyst comprising identifying a rapid deactivation threshold (RDT) of the catalyst.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: October 16, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Scott H. Brown, Tin-Tack Peter Cheung, Daniel P. Hagewiesche, Baiyi Zhao
  • Patent number: 8278237
    Abstract: A catalyst for producing aromatic compounds from lower hydrocarbons while improving activity life stability of methane conversion rate; benzene formation rate; naphthalene formation rate; and total formation rate of benzene, toluene and xylene is formed by loading molybdenum and copper on metallo-silicate serving as a substrate and then calcining the metallo-silicate. When the catalyst is reacted with a reaction gas containing lower hydrocarbons and carbonic acid gas, aromatic compounds are produced. In order to obtain the catalyst, it is preferable that molybdenum and copper are loaded on zeolite formed of metallo-silicate after the zeolite is treated with a silane compound larger than a pore of the zeolite in diameter and having an amino group and a straight-chain hydrocarbon group, the amino group being able to selectively react with the zeolite at a Bronsted acid point of the zeolite. It is preferable that a loaded amount of molybdenum is within a range of from 2 to 12 wt.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: October 2, 2012
    Assignee: Meidensha Corporation
    Inventors: Shinichi Yamada, Tomohiro Yamada, Yuji Ogawa, Hirokazu Akiyama, Takuya Hatagishi
  • Publication number: 20120142986
    Abstract: Provided is a process for producing an aromatic hydrocarbon efficiently at high yield from a lower hydrocarbon containing methane as a major component, and such a process for producing an aromatic hydrocarbon includes the step of reacting a lower hydrocarbon containing methane as a major component in the presence of a transition-metal-containing crystalline metallosilicate catalyst which is obtainable by supporting 5 to 25 parts by weight of a transition metal (X) on 100 parts by weight of a modified crystalline metallosilicate obtainable by subjecting a crystalline metallosilicate to a series of treatment (A) including a step (i) of eliminating part of a metal from the crystalline metallosilicate and a silylation step (ii).
    Type: Application
    Filed: August 4, 2010
    Publication date: June 7, 2012
    Applicants: AGENCY FOR SCIENCE TECHNOLOGY AND RESEARCH, MITSUI CHEMICALS, INC.
    Inventors: Akihiro Okabe, Yoshimichi Namai, Hideyuki Ito, Satoshi Akiyama, Michiaki Umeno, Takashi Ono, Toru Nishimura
  • Patent number: 8153852
    Abstract: This invention is for a catalyst for conversion of alkanes having two to six carbon atoms per molecule to aromatics. The catalyst is a MFI zeolite with a crystallite size of less than 15 microns with, in addition to silicon and aluminum, germanium as a framework element. Platinum is deposited on the zeolite. The zeolite may contain other optional tetravalent and trivalent elements in the zeolite framework. The catalyst is synthesized by preparing a zeolite containing aluminum, silicon, germanium and, optionally, other elements in the framework, calcining the zeolite and depositing platinum on the zeolite. The catalyst may be used for aromatization of alkanes, such as propane, to aromatics, such as benzene, toluene and xylenes.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: April 10, 2012
    Assignee: Saudi Basic Industries Corporation
    Inventors: Paul E. Ellis, Gopalakrishnan G. Juttu, Alla K. Khanmamedova, Scott F. Mitchell, Scott A. Stevenson
  • Patent number: 8148590
    Abstract: A process for producing aromatic hydrocarbons and hydrogen, in which a lower hydrocarbons-containing feedstock gas is reformed by being supplied to and being brought into contact with a catalyst under high temperature conditions thereby forming aromatic hydrocarbons and hydrogen. The method includes the steps of (a) supplying a hydrogen gas together with the feedstock gas during a supply of the feedstock gas; and (b) suspending the supply of the feedstock gas for a certain period of time while keeping a condition of a supply of the hydrogen gas. The catalyst is exemplified by a metallo-silicate carrying molybdenum and a metallo-silicate carrying molybdenum and rhodium. An amount of the hydrogen gas supplied together with the feedstock gas is set to be preferably larger than 2% and smaller than 10%, more preferably within a range of from 4 to 8%, much more preferably 8%.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: April 3, 2012
    Assignees: Meidensha Corporation
    Inventors: Masaru Ichikawa, Ryoichi Kojima, Yuji Ogawa, Masamichi Kuramoto
  • Patent number: 8138384
    Abstract: In a process for converting methane to alkylated aromatic hydrocarbons, a feed containing methane is contacted with a dehydrocyclization catalyst under conditions effective to convert said methane to aromatic hydrocarbons and produce a first effluent stream comprising aromatic hydrocarbons and hydrogen. At least a portion of said aromatic hydrocarbon from said first effluent stream is then contacted with an alkylating agent under conditions effective to alkylate said aromatic hydrocarbon and produce an alkylated aromatic hydrocarbon having more alkyl side chains than said aromatic hydrocarbon prior to the alkylating.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: March 20, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Elizabeth L. Stavens, Gary D. Mohr, Matthew J. Vincent
  • Publication number: 20120029257
    Abstract: A reforming process using a medium pore zeolite under conditions to facilitate the conversion of C8 paraffinic compounds to para-xylene is provided. Para-xylene is produced at greater than thermodynamic equilibrium concentrations using the process.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 2, 2012
    Inventors: Cong-Yan Chen, Stephen J. Miller, James N. Ziemer, Ann J. Liang
  • Patent number: 8097763
    Abstract: An aromatic compound, particularly benzene, is stably produced in the presence of a catalyst from a lower hydrocarbon having 2 or more carbon atoms, particularly from an ethane-containing gas composition such as ethane gas and natural gas. Disclosed is a process for producing an aromatic compound by reacting ethane or an ethane-containing raw gas in the presence of a catalyst. The catalyst may comprise molybdenum carried on metallosilicate such as H-type ZSM-5H or H-type MCM-22. In the reaction, the temperature is from 550 to 750° C., preferably not lower than 600° C. and not higher than 680° C. Additionally, the raw gas further contains methane and hydrogen is added thereto, thereby improving the production efficiency and stability.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: January 17, 2012
    Assignees: Meidensha Corporation
    Inventors: Masaru Ichikawa, Ryoichi Kojima, Yuji Ogawa, Masamichi Kuramoto
  • Patent number: 8084658
    Abstract: Process for the integrated preparation of aromatics and ammonia by reaction of a gas stream A comprising at least one C1-C6-aliphatic and nitrogen in the presence of at least one catalyst, wherein the C1-C6-aliphatics are converted nonoxidatively into aromatics in one reaction and the hydrogen liberated in this reaction is reacted with nitrogen to form ammonia in a further reaction.
    Type: Grant
    Filed: November 22, 2007
    Date of Patent: December 27, 2011
    Assignee: BASF SE
    Inventors: Ulrich Mueller, Harald Freiberger
  • Patent number: 8049051
    Abstract: The present invention provides a process for producing aromatic hydrocarbons at a sufficiently high yield, from a light hydrocarbon containing mainly hydrocarbons having 7 or fewer carbon atoms. The process of the present invention comprises bringing a feedstock containing mainly light hydrocarbons having 2 to 7 carbon atoms into contact with a catalyst composition comprising at least a gallium-containing crystalline aluminosilicate wherein a reaction step for converting the feedstock to aromatic hydrocarbons comprises at least two or more reaction layers formed of the catalyst composition, arranged in series and heating means arranged either between or in the reaction layers, the amount of the catalyst in the first stage reaction layer is 30 percent by volume or less of the total catalyst volume, and/or the yield of the aromatics in the product outflowing from the first reaction layer is from 0.5 to 30 percent by mass.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: November 1, 2011
    Assignees: Nippon Oil Corporation, Chiyoda Corporation
    Inventors: Yushi Suzuki, Tsuyoshi Asano