Patents by Inventor Doron Levin

Doron Levin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7326815
    Abstract: The present invention relates to a process for producing phenol and a ketone of general formula R1COCH2R3 (I), in which R1 and R2 each independently represent an alkyl group having from 1 to 4 carbon atoms, said process comprising: (a) providing an alkylbenzene feedstock comprising (i) an alkylbenzene of general formula (II) in which R1 and R2 have the same meaning as in formula (I) and (ii) at least one structural isomer of said alkylbenzene of formula (II) in an amount of at least 0.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: February 5, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jihad Mohammed Dakka, Doron Levin, Jon Edmond Randolph Stanat
  • Patent number: 7319178
    Abstract: The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene. The catalyst composition comprises a molecular sieve and at least one oxide of a metal selected from Group 3 of the Periodic Table of Elements, the Lanthanide series of elements and the Actinide series of elements.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: January 15, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Doron Levin, James Clark Vartuli
  • Patent number: 7307196
    Abstract: The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molecular sieve and at least one oxide of a metal from Group 4, optionally in combination with at least one metal from Groups 2 and 3, of the Periodic Table of Elements.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: December 11, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Doron Levin, James Clark Vartuli
  • Publication number: 20070265476
    Abstract: The present invention relates to a process for producing phenol and a ketone of general formula R1COCH2R2 (I), in which R1 and R2 each independently represent an alkyl group having from 1 to 4 carbon atoms, said process comprising: (a) providing an alkylbenzene feedstock comprising (i) an alkylbenzene of general formula (II) in which R1 and R2 have the same meaning as in formula (I) and (ii) at least one structural isomer of said alkylbenzene of formula (II) in an amount of at least 0.
    Type: Application
    Filed: December 27, 2005
    Publication date: November 15, 2007
    Inventors: Jihad Dakka, Doron Levin, Jon Stanat
  • Patent number: 7282192
    Abstract: The invention relates to a composition of matter comprising at least one metal from Group 3, at least one metal from Group 4, sulfur and oxygen, particularly useful as a catalyst for ether decomposition to alkanols and alkenes.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: October 16, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: James Clarke Vartuli, Jeffrey T. Elks, El-Mekki El-Malki, William G. Borghard, Doron Levin, Stephen John McCarthy
  • Publication number: 20070232844
    Abstract: A gas-solids reaction system is provided for improving product recovery in a multiple reactor reaction system. An oxygenate feedstock, desirably of high concentration in oxygenate, is reacted with a catalyst having a low to modest acidity and a Si/Al2 ratio of from 0.10 to 0.32. The reaction occurs in a reaction zone of a fluidized bed reactor at an oxygenate partial pressure of at least 45 psia and a reactor gas superficial velocity of at least 10 ft/s, conveying catalyst through the reaction zone to a circulation zone. The catalyst undergoes displacement with an inert gas in the circulation zone at a displacement gas superficial velocity of at least 0.03 m/s, after which at least a portion, preferably a large portion is returned to the reaction zone. The catalyst has a residence time in the circulation zone of at least twice that of the residence time of catalyst in the reaction zone.
    Type: Application
    Filed: January 26, 2007
    Publication date: October 4, 2007
    Inventors: Keith H. Kuechler, James H. Beech, Doron Levin, Stephen N. Vaughn, Stephen H. Brown
  • Patent number: 7276638
    Abstract: The invention relates to a process for producing alkylated aromatic hydrocarbons, preferably with an oxygen or sulfur containing alkylating agent, in the presence of a multi-component molecular sieve catalyst composition that includes a molecular sieve and an active metal oxide. The invention is also directed to methods of making and formulating the multi-component molecular sieve catalyst composition useful in producing alkylated aromatics.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: October 2, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jihad M. Dakka, James C. Vartuli, John S. Buchanan, Jose G. Santiesteban, Doron Levin, Lorenzo C. DeCaul
  • Publication number: 20070161840
    Abstract: The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molecular sieve and at least one metal oxide, such as a magnesium oxide that, when saturated with acetone and contacted with said acetone for 1 hour at 25° C., converts more than 80% of the acetone.
    Type: Application
    Filed: March 5, 2007
    Publication date: July 12, 2007
    Inventors: Teng Xu, Stephen Vaughn, Richard Hall, Doron Levin, James Vartuli
  • Publication number: 20070123740
    Abstract: The invention relates to a composition of matter comprising at least one metal from Group 3, at least one metal from Group 4, sulfur and oxygen, particularly useful as a catalyst for ether decomposition to alkanols and alkenes.
    Type: Application
    Filed: December 22, 2006
    Publication date: May 31, 2007
    Inventors: James Vartuli, Jeffrey Elks, El-Mekki El-Malki, William Borghard, Doron Levin, Stephen McCarthy
  • Patent number: 7208442
    Abstract: The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molecular sieve and at least one metal oxide, such as a magnesium oxide that, when saturated with acetone and contacted with said acetone for 1 hour at 25° C., converts more than 80% of the acetone.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: April 24, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Teng Xu, Stephen N. Vaughn, Richard B. Hall, Doron Levin, James Clark Vartuli
  • Patent number: 7205447
    Abstract: The present invention provides a process for removing an oxygenate impurity selected from aldehyde and/or ketone, from an olefinic product stream. A product stream is contacted with a metal oxide-containing catalyst in the presence of a C1 to C6 alcohol under conditions sufficient to convert the oxygenate impurity to an olefin and/or oxygenate of higher carbon number than the aldehyde and/or ketone. The aldehyde can be C2 to C5 aldehyde and the ketone can be C3 to C6 ketone. The metal oxide-containing catalyst typically comprises an oxide of at least one metal selected from the group consisting of Group 2 metals, Group 3 metals (including Lanthanide and Actinide series metals), and Group 4 metals.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: April 17, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Doron Levin, James Clark Vartuli
  • Patent number: 7199278
    Abstract: A process is described for converting an oxygenate-containing feedstock into one or more olefins in a moving bed reactor system operating in countercurrent flow using a catalyst composition comprising a molecular sieve and at least one metal oxide having an uptake of carbon dioxide at 100° C. of at least 0.03 mg/m2 of the metal oxide.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: April 3, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Shun Chong Fung, Doron Levin, Jose Santiesteban, Nicolas P. Coute
  • Patent number: 7199277
    Abstract: This invention relates to processes for converting oxygenates to olefins that include a step of pretreating catalyst, which comprises molecular sieve and one or more active metal oxides of one or more metals, with a hydrocarbon composition to provide an integrated hydrocarbon co-catalyst within the molecular sieve. The combination of molecular sieve and hydrocarbon co-catalyst converts oxygenate to an olefin product with high selectivity to light olefins (i.e., ethylene or propylene, or mixture thereof).
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: April 3, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Teng Xu, Nicolas P. Coute, Kenneth R. Clem, Doron Levin, James C. Vartuli
  • Patent number: 7195746
    Abstract: A method for making an organometallic treated molecular sieve is described in which a molecular sieve having at least one hydroxyl group and at least [AlO2] and [PO2] tetrahedral units and having an average pore dimension less than or equal to about 5 ? is contacted with a solution comprising an organometallic compound and a non-proton donating solvent. The resulting organometallic treated molecular sieve has enhanced ethylene and/or propylene selectivity when used in the conversion of organic oxygenates to olefins. The ethylene and/or propylene selectivity, as well as catalyst life, are further enhanced when the resulting organometallic treated molecular sieve is combined with an oxide of at least one metal selected from Groups 2, 3 and Group 4 of the Periodic Table.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: March 27, 2007
    Assignee: Exxon Mobil Chemical Patents Inc.
    Inventors: Kun Wang, Richard Earl Bare, Doron Levin, James Clark Vartuli, Guang Cao, Richard B. Hall
  • Patent number: 7186875
    Abstract: A process is described for converting an oxygenate-containing feedstock into one or more olefins in a reactor system including a plurality of fixed bed reactors each containing a catalyst composition comprising a molecular sieve and at least one metal oxide having an uptake of carbon dioxide at 100° C. of at least 0.03 mg/m2 of the metal oxide. Each reactor is sequentially rotated between at least one operating mode, wherein the catalyst composition in the reactor is contacted with the oxygenate-containing feedstock, and a regeneration mode, wherein the catalyst composition in the reactor is contacted with a regeneration medium.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: March 6, 2007
    Assignee: Exxon Mobil Chemical Patents Inc.
    Inventors: Shun Chong Fung, Doron Levin, Jose Santiesteban, Nicolas P. Coute
  • Publication number: 20070043251
    Abstract: A porous crystalline material is described having the chabazite framework type and having a composition involving the molar relationship: X2O3:(n)YO2, wherein X is a trivalent element, such as aluminum, boron, iron, indium, and/or gallium; Y is a tetravalent element such as silicon, tin, titanium and/or germanium; and n is greater than 100 and typically greater than 200, such as about 300 to about 4000, for example from about 400 to about 1200. The material is synthesized in a fluoride medium and exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.
    Type: Application
    Filed: October 31, 2006
    Publication date: February 22, 2007
    Inventors: Karl Strohmaier, Sebastian Reyes, Doron Levin
  • Patent number: 7173158
    Abstract: The invention relates to a composition of matter comprising at least one metal from Group 3, at least one metal from Group 4, sulfur and oxygen, particularly useful as a catalyst for ether decomposition to alkanols and alkenes.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: February 6, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: James Clarke Vartuli, Doron Levin, Stephen John McCarthy
  • Patent number: 7166757
    Abstract: A process is described for converting an oxygenate-containing feedstock into one or more olefins in which the feedstock is contacted in a reaction zone with a fluidized bed of a particulate catalyst composition comprising a molecular sieve and at least one metal oxide having an uptake of carbon dioxide at 100° C. of at least 0.03 mg/m2 of the metal oxide whereby at least part of the feedstock is converted into a product stream comprising one or more olefins and a carbonaceous material is deposited on the catalyst composition to produce a coked catalyst composition. The coked catalyst composition is separated from the product stream and divided into at least first and second portions. The first portion of the coked catalyst composition is contacted with a regeneration medium in a regeneration zone under conditions to remove at least part of the carbonaceous material from the coked catalyst composition and produce a regenerated catalyst composition, which is subsequently recycled to the reaction zone.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: January 23, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Shun Chong Fung, Doron Levin, Jose Santiesteban, Nicolas P. Coute
  • Publication number: 20060281954
    Abstract: This invention relates to a process for the production of an alcohol, the process comprising (a) reacting an olefin and water in the presence of a catalyst under conditions sufficient to form a crude alcohol stream comprising alcohol, and a dialkyl ether; (b) separating at least a portion of the crude alcohol stream into an alcohol-containing stream and a dialkyl ether stream; (c) contacting at least a portion of the dialkyl ether stream with an ether decomposition catalyst, the ether decomposition catalyst comprising a mixed metal oxide having the following composition XmYnZpOq where X is at least one metal selected from Group 4 of the Periodic Table of Elements, Y is at least one metal selected from Group 3 (including the Lanthanides and Actinides) and Group 6 of the Periodic Table of Elements and Z is at least one metal selected from Groups 7, 8, and 11 of the Periodic Table of Elements; m, n, p, and q are the atomic ratios of their respective components and, when m is 1, n is from about 0.01 to about 0.
    Type: Application
    Filed: June 8, 2005
    Publication date: December 14, 2006
    Inventors: Charles Yarbrough, Brian Roberts, Dennis Davoren, Kenneth Buturla, Carl Katzenstein, Doron Levin, Hans Korsten, Vijay Swarup
  • Patent number: 7148172
    Abstract: A porous crystalline material is described having the chabazite framework type and having a composition involving the molar relationship: X2O3:(n)YO2, wherein X is a trivalent element, such as aluminum, boron, iron, indium, and/or gallium; Y is a tetravalent element such as silicon, tin, titanium and/or germanium; and n is greater than 100 and typically greater than 200, such as about 300 to about 4000, for example from about 400 to about 1200. The material is synthesized in a fluoride medium and exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: December 12, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Karl G. Strohmaier, Sebastian C. Reyes, Doron Levin