Patents by Inventor Paul Marie Ayoub

Paul Marie Ayoub 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).

  • Publication number: 20100217038
    Abstract: A process for converting levulinic acid into pentanoic acid, the process comprising the following steps: (a) contacting a feedstock comprising levulinic acid under hydrogenating conditions, in the presence of hydrogen, with a non-acidic heterogeneous hydrogenation catalyst comprising a hydrogenation metal supported on a solid catalyst carrier to obtain a first effluent comprising gamma valerolactone; (b) contacting at least part of the first effluent under hydrogenating conditions, in the presence of hydrogen, with a strongly acidic catalyst and a hydrogenation metal to obtain a second effluent comprising pentanoic acid, wherein step (b) is operated at a conversion per pass of at most 70 wt % to obtain the second effluent comprising pentanoic acid and unconverted gamma valerolactone, and wherein part of the unconverted gamma valerolactone is recycled to step (a) and/or step (b).
    Type: Application
    Filed: May 21, 2008
    Publication date: August 26, 2010
    Inventors: Paul Marie Ayoub, Jean-Paul Lange
  • Patent number: 7378549
    Abstract: A process for the reactive extraction of levulinic acid from an aqueous mixture having levulinic acid, wherein the aqueous mixture is contacted with a liquid esterifying alcohol, the alcohol having at least four carbon atoms and is substantially water-immiscible, at esterification conditions in the presence of a catalyst to form a levulinate ester, wherein the amount of the alcohol is such that the alcohol extracts the levulinate ester from the aqueous mixture. Further, an aqueous phase, having the catalyst and a reduced levulinic acid content, and an organic phase, having the alcohol and the levulinate ester, are formed.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: May 27, 2008
    Assignee: Shell Oil Company
    Inventor: Paul Marie Ayoub
  • Patent number: 7348462
    Abstract: A process for preparing branched alkyl aromatic hydrocarbons, which process comprises contacting branched olefins with an aromatic hydrocarbon under alkylating conditions, which branched olefins have been obtained by a process which comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition has been obtained by hydrocracking and hydroisomerization of a paraffinic wax and which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: March 25, 2008
    Assignee: Shell Oil Company
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Patent number: 7335802
    Abstract: Systems and methods to produced branched aliphatic alcohols are described. Systems may include a dehydrogenation-isomerization unit, an olefin dimerization unit, an olefin isomerization unit, a hydroformylation unit, a dehydrogenation unit, a hydrogenation unit and/or combinations thereof. Methods for producing branched aliphatic alcohols may include isomerization of olefins in a process stream. The isomerized olefins may be hydroformylated to produce aliphatic alcohols. After hydroformylation of the aliphatic alcohols, unreacted components from the hydroformylation process may be separated from the aliphatic alcohols products. The unreacted components from the hydroformylation process may be recycled back into the main process stream or sent to other processing units. Addition of multiple streams to the units may be performed to control reaction conditions in the units.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: February 26, 2008
    Assignee: Shell Oil Company
    Inventors: Paul Marie Ayoub, Hendrik Dirkzwager, Brendan Dermot Murray, Steve Clois Sumrow
  • Patent number: 7235684
    Abstract: A process for preparing branched alkyl aromatic hydrocarbons, which process comprises contacting branched olefins with an aromatic hydrocarbon under alkylating conditions, which branched olefins have been obtained by a process which comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition has been obtained by hydrocracking and hydroisomerization of a paraffinic wax and which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: June 26, 2007
    Assignee: Shell Oil Company
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Patent number: 7087777
    Abstract: A process for preparing branched olefins comprising 0.5% or less quaternary aliphatic carbon atoms, which process comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.7 and the branching comprising methyl and optionally ethyl branches, and which isoparaffinic composition may be obtained by hydrocracking and hydroisomerization of a paraffinic wax; a method of using olefins for making an anionic surfactant, a nonionic surfactant or a cationic surfactant, in particular a surfactant sulfate or sulfonate, comprising converting the branched olefins into the surfactant; and an anionic surfactant, a nonionic surfactant or a cationic surfactant which is obtainable by the method of use.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: August 8, 2006
    Assignee: Shell Oil Company
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Patent number: 7053257
    Abstract: A process for preparing branched alkyl aromatic hydrocarbons, which process comprises contacting branched olefins with an aromatic hydrocarbon under alkylating conditions, which branched olefins have been obtained by a process which comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition has been obtained by hydrocracking and hydroisomerization of a paraffinic wax and which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: May 30, 2006
    Assignee: Shell Oil Company
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Publication number: 20040176655
    Abstract: Systems and methods to produce branched alkyl aromatic hydrocarbons are described. Systems may include an olefin isomerization unit, an olefin dimerization unit, a dehydrogenation-isomerization unit, an alkylation unit, a dehydrogenation unit, a hydrogenation unit and/or combinations thereof. Methods for producing branched alkyl aromatic hydrocarbons may include isomerization of olefins in a process stream. The isomerized olefins may be used to alkylate aromatic hydrocarbons. After alkylation of the aromatic hydrocarbons, unreacted components from the alkylation process may be separated from the alkyl aromatic hydrocarbons. The unreacted components from the alkylation process may be recycled back into a process stream or sent to other processing units.
    Type: Application
    Filed: February 4, 2004
    Publication date: September 9, 2004
    Inventors: Paul Marie Ayoub, Steven C. Sumrow, Henk Dirkzwager
  • Publication number: 20040167347
    Abstract: A process for preparing branched alkyl aromatic hydrocarbons, which process comprises contacting branched olefins with an aromatic hydrocarbon under alkylating conditions, which branched olefins have been obtained by a process which comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition has been obtained by hydrocracking and hydroisomerization of a paraffinic wax and which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.
    Type: Application
    Filed: February 27, 2004
    Publication date: August 26, 2004
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Publication number: 20040167368
    Abstract: A process for preparing branched alkyl aromatic hydrocarbons, which process comprises contacting branched olefins with an aromatic hydrocarbon under alkylating conditions, which branched olefins have been obtained by a process which comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition has been obtained by hydrocracking and hydroisomerization of a paraffinic wax and which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.
    Type: Application
    Filed: February 27, 2004
    Publication date: August 26, 2004
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Publication number: 20040167369
    Abstract: A process for preparing branched alkyl aromatic hydrocarbons, which process comprises contacting branched olefins with an aromatic hydrocarbon under alkylating conditions, which branched olefins have been obtained by a process which comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition has been obtained by hydrocracking and hydroisomerization of a paraffinic wax and which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.
    Type: Application
    Filed: February 27, 2004
    Publication date: August 26, 2004
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Patent number: 6765106
    Abstract: A process for preparing branched olefins comprising 0.5% or less quaternary aliphatic carbon atoms, which process comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.7 and the branching comprising methyl and optionally ethyl branches, and which isoparaffinic composition may be obtained by hydrocracking and hydroisomerization of a paraffinic wax; a method of using olefins for making an anionic surfactant, a nonionic surfactant or a cationic surfactant, in particular a surfactant sulfate or sulfonate, comprising converting the branched olefins into the surfactant; and an anionic surfactant, a nonionic surfactant or a cationic surfactant which is obtainable by the method of use.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: July 20, 2004
    Assignee: Shell Oil Company
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Publication number: 20040133037
    Abstract: A process for preparing branched olefins comprising 0.5% or less quaternary aliphatic carbon atoms, which process comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.7 and the branching comprising methyl and optionally ethyl branches, and which isoparaffinic composition may be obtained by hydrocracking and hydroisomerization of a paraffinic wax; a method of using olefins for making an anionic surfactant, a nonionic surfactant or a cationic surfactant, in particular a surfactant sulfate or sulfonate, comprising converting the branched olefins into the surfactant; and an anionic surfactant, a nonionic surfactant or a cationic surfactant which is obtainable by the method of use.
    Type: Application
    Filed: December 17, 2003
    Publication date: July 8, 2004
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Patent number: 6747165
    Abstract: A process for preparing branched alkyl aromatic hydrocarbons, which process comprises contacting branched olefins with an aromatic hydrocarbon under alkylating conditions, which branched olefins have been obtained by a process which comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition has been obtained by hydrocracking and hydroisomerization of a paraffinic wax and which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: June 8, 2004
    Assignee: Shell Oil Company
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Publication number: 20030055303
    Abstract: A process for preparing branched alkyl aromatic hydrocarbons, which process comprises contacting branched olefins with an aromatic hydrocarbon under alkylating conditions, which branched olefins have been obtained by a process which comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition has been obtained by hydrocracking and hydroisomerization of a paraffinic wax and which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.
    Type: Application
    Filed: February 14, 2002
    Publication date: March 20, 2003
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub
  • Publication number: 20020183567
    Abstract: A process for preparing branched olefins comprising 0.5% or less quaternary aliphatic carbon atoms, which process comprises dehydrogenating an isoparaffinic composition over a suitable catalyst which isoparaffinic composition comprises paraffins having a carbon number in the range of from 7 to 35, of which paraffins at least a portion of the molecules is branched, the average number of branches per paraffin molecule being at least 0.7 and the branching comprising methyl and optionally ethyl branches, and which isoparaffinic composition may be obtained by hydrocracking and hydroisomerization of a paraffinic wax; a method of using olefins for making an anionic surfactant, a nonionic surfactant or a cationic surfactant, in particular a surfactant sulfate or sulfonate, comprising converting the branched olefins into the surfactant; and an anionic surfactant, a nonionic surfactant or a cationic surfactant which is obtainable by the method of use.
    Type: Application
    Filed: February 14, 2002
    Publication date: December 5, 2002
    Inventors: Laurent Alain Michel Fenouil, Brendan Dermot Murray, Paul Marie Ayoub