Patents by Inventor J. Scott Buchanan

J. Scott Buchanan 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: 11787758
    Abstract: Provided are two-stage processes by which primary alcohols such as ethanol or 1-butanol are converted into distillate-range ethers and olefins utilizing Guerbet coupling followed by intermolecular dehydration. The ethers can be used, for example, as cetane-improvers in diesel fuel, while the olefins can be hydrogenated to afford paraffins.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: October 17, 2023
    Assignee: ExxonMobil Technology and Engineering Company
    Inventors: Nathaniel M. Eagan, Michael P. Lanci, George W. Huber, Paolo Andres Cuello Penaloza, J. Scott Buchanan
  • Patent number: 11518725
    Abstract: Processes for producing alcohols from biomass are provided. The processes utilize supercritical methanol to depolymerize biomass with subsequent conversion to a mixture of alcohols. In particular the disclosure relates to continuous processes which produce high yields of alcohols through recycling gases and further employ dual reactor configurations which improve overall alcohol yields. Processes for producing higher ethers and olefins from the so-formed alcohols, through alcohol coupling and subsequent dehydration are also provided. The resulting distillate range ethers and olefins are useful as components in liquid fuels, such as diesel and jet fuel.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: December 6, 2022
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Peter H. Galebach, Michael P. Lanci, George W. Huber, Wenzhao Wu, Ashley M. Wittrig, Nathaniel M. Eagan, Paolo Andres Cuello Penaloza, J. Scott Buchanan
  • Publication number: 20210363085
    Abstract: Provided are two-stage processes by which primary alcohols such as ethanol or 1-butanol are converted into distillate-range ethers and olefins utilizing Guerbet coupling followed by intermolecular dehydration. The ethers can be used, for example, as cetane-improvers in diesel fuel, while the olefins can be hydrogenated to afford paraffins.
    Type: Application
    Filed: May 20, 2021
    Publication date: November 25, 2021
    Inventors: Nathaniel M. Eagan, Michael P. Lanci, George W. Huber, Paolo Andres Cuello Penaloza, J. Scott Buchanan
  • Publication number: 20210363080
    Abstract: Processes for producing alcohols from biomass are provided. The processes utilize supercritical methanol to depolymerize biomass with subsequent conversion to a mixture of alcohols. In particular the disclosure relates to continuous processes which produce high yields of alcohols through recycling gases and further employ dual reactor configurations which improve overall alcohol yields. Processes for producing higher ethers and olefins from the so-formed alcohols, through alcohol coupling and subsequent dehydration are also provided. The resulting distillate range ethers and olefins are useful as components in liquid fuels, such as diesel and jet fuel.
    Type: Application
    Filed: May 20, 2021
    Publication date: November 25, 2021
    Inventors: Peter H. Galebach, Michael P. Lanci, George W. Huber, Wenzhao Wu, Ashley M. Wittrig, Nathaniel M. Eagan, Paolo Andres Cuello Penaloza, J. Scott Buchanan
  • Publication number: 20140061096
    Abstract: The invention relates to processes for upgrading products obtained from hydrocarbon pyrolysis, equipment useful for such processes, and the use of upgraded pyrolysis products.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 6, 2014
    Inventors: Stephen H. BROWN, S. Mark Davis, J. Scott Buchanan, David T. Ferrughelli, Keith G. Reed
  • Patent number: 8247627
    Abstract: In a process for producing phenol and/or cyclohexanone, benzene and hydrogen are contacted with a first catalyst in a hydroalkylation step to produce a first effluent stream comprising cyclohexylbenzene, cyclohexane, and unreacted benzene. At least part of the first effluent stream is supplied to a first separation system to divide the first effluent stream part into a cyclohexylbenzene-rich stream and a C6 product stream comprising unreacted benzene and cyclohexane.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: August 21, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jihad M. Dakka, J. Scott Buchanan, Jane C. Cheng, Tan-Jen Chen, Lorenzo C. DeCaul, Terry E. Helton, Jon E. Stanat, Francisco M. Benitez
  • Patent number: 7982080
    Abstract: In a process for converting a low carbon number aliphatic hydrocarbon to higher hydrocarbons including aromatic hydrocarbons, a feed containing the aliphatic hydrocarbon is contacted with a dehydrocyclization catalyst under conditions effective to convert the aliphatic hydrocarbon to aromatic hydrocarbons and produce an effluent stream comprising aromatic hydrocarbons and hydrogen. The dehydrocyclization catalyst comprises a metal or metal compound and a molecular sieve wherein the ratio of the amount of any Bronsted acid sites in the catalyst to the amount of said metal in the catalyst is less than 0.4 mol/mol of said metal.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: July 19, 2011
    Inventors: Teng Xu, Kenneth R. Clem, Jeremy J. Patt, J. Scott Buchanan, Larry L. Iaccino
  • Publication number: 20110037022
    Abstract: In a process for producing phenol and/or cyclohexanone, benzene and hydrogen are contacted with a first catalyst in a hydroalkylation step to produce a first effluent stream comprising cyclohexylbenzene, cyclohexane, and unreacted benzene. At least part of the first effluent stream is supplied to a first separation system to divide the first effluent stream part into a cyclohexylbenzene-rich stream and a C6 product stream comprising unreacted benzene and cyclohexane.
    Type: Application
    Filed: March 16, 2009
    Publication date: February 17, 2011
    Applicant: EXXONMOBIL CHEMICAL PATENTS INC.
    Inventors: Jihad M. Dakka, J. Scott Buchanan, Jane C. Cheng, Tan-Jen Chen, Lorenzo C. Decaul, Terry E. Helton, Jon E. Stanat, Francisco M. Benitez
  • Patent number: 7589246
    Abstract: In a process for converting methane to aromatic hydrocarbons, a feed containing methane and a particulate catalytic material are supplied to a reaction zone operating under reaction conditions effective to convert at least a portion of the methane to aromatic hydrocarbons and to deposit carbonaceous material on the particulate catalytic material causing catalyst deactivation. At least a portion of the deactivated particulate catalytic material is removed from the reaction zone and is heated to a temperature of about 700° C. to about 1200° C. by direct and/or indirect contact with combustion gases produced by combustion of a supplemental fuel. The heated particulate catalytic material is then regenerated with a hydrogen-containing gas under conditions effective to convert at least a portion of the carbonaceous material thereon to methane and the regenerated catalytic particulate material is recycled back to the reaction zone.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: September 15, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Larry L. Iaccino, Teng Xu, J. Scott Buchanan, Neeraj Sangar, Jeremy J. Patt, Mark A. Nierode, Kenneth R. Clem, Mobae Afeworki
  • Patent number: 7563358
    Abstract: A hydrocarbon conversion process for producing an aromatics product containing of benzene, toluene, xylenes, or mixtures thereof. The process is carried out by converting precursors of benzene, toluene, and xylenes that are contained in a hydrocarbon feed (C6+ non-aromatic cyclic hydrocarbons, A8+ single-ring aromatic hydrocarbons having at least one alkyl group containing two or more carbon atoms; and A9+ single-ring aromatic hydrocarbons having at least three methyl groups) to produce a product that contains an increased amount of benzene, toluene, xylenes, or combinations thereof compared to said hydrocarbon feed.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: July 21, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Elizabeth L. Stavens, Stephen H. Brown, J. Scott Buchanan, Yun-Feng Chang, Larry L. Iaccino, Paul F. Keusenkothen, John D. Y. Ou, Randall D. Partridge
  • Patent number: 7504527
    Abstract: An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is first reacted with carbon dioxide in the presence of a halogen-free carbonation catalyst to provide a corresponding cyclic carbonate and the cyclic carbonate is then reacted with an aliphatic monohydric alcohol in the presence of the carbonation catalyst and/or a transesterification catalyst and recycling the carbonation catalyst to provide a corresponding dialkyl carbonate and diol, wherein the dialkyl carbonate product exhibits a halogen concentration of about 5 ppm or less.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: March 17, 2009
    Assignee: Badger Licensing, LLC
    Inventors: Richard H. Schlosberg, J. Scott Buchanan, Jose Guadalupe Santiesteban, Zhaozhong Jiang, William A. Weber
  • Patent number: 7491837
    Abstract: An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is first reacted with carbon dioxide in the presence of a halogen-free carbonation catalyst to provide a corresponding cyclic carbonate and the cyclic carbonate is then reacted with an aliphatic monohydric alcohol in the presence of the carbonation catalyst and/or a transesterification catalyst and recycling the carbonation catalyst to provide a corresponding dialkyl carbonate and diol, wherein the dialkyl carbonate product exhibits a halogen concentration of about 5 ppm or less.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: February 17, 2009
    Assignee: Badger Licensing LLC.
    Inventors: Richard H. Schlosberg, J. Scott Buchanan, Jose Guadalupe Santiesteban, Zhaozhong Jiang, William A. Weber
  • Publication number: 20090030253
    Abstract: In a process for converting a low carbon number aliphatic hydrocarbon to higher hydrocarbons including aromatic hydrocarbons, a feed containing the aliphatic hydrocarbon is contacted with a dehydrocyclization catalyst under conditions effective to convert the aliphatic hydrocarbon to aromatic hydrocarbons and produce an effluent stream comprising aromatic hydrocarbons and hydrogen. The dehydrocyclization catalyst comprises a metal or metal compound and a molecular sieve wherein the ratio of the amount of any Bronsted acid sites in the catalyst to the amount of said metal in the catalyst is less than 0.4 mol/mol of said metal.
    Type: Application
    Filed: July 1, 2008
    Publication date: January 29, 2009
    Inventors: Teng Xu, Kenneth R. Clem, Jeremy J. Patt, J. Scott Buchanan, Larry L. Iaccino
  • Patent number: 7453007
    Abstract: A process for the production of a dialkyl carbonate and a diol, such as dimethyl carbonate and ethylene glycol, by reacting a feed containing a cyclic carbonate, a hydroxy alkyl carbonate and an aliphatic monohydric alcohol in the presence of a transesterification catalyst is described. In another aspect, a process is described which is particularly useful for producing unsymmetric dialkyl carbonates, such as ethyl methyl carbonate.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: November 18, 2008
    Assignee: Badger Licensing, LLC
    Inventors: J. Scott Buchanan, Zhaozhong Jiang, Jose Guadalupe Santiesteban, William A. Weber
  • Publication number: 20080249342
    Abstract: In a process for converting methane to aromatic hydrocarbons, a feed containing methane and a particulate catalytic material are supplied to a reaction zone operating under reaction conditions effective to convert at least a portion of the methane to aromatic hydrocarbons and to deposit carbonaceous material on the particulate catalytic material causing catalyst deactivation. At least a portion of the deactivated particulate catalytic material is removed from the reaction zone and is heated to a temperature of about 700° C. to about 1200° C. by direct and/or indirect contact with combustion gases produced by combustion of a supplemental fuel. The heated particulate catalytic material is then regenerated with a hydrogen-containing gas under conditions effective to convert at least a portion of the carbonaceous material thereon to methane and the regenerated catalytic particulate material is recycled back to the reaction zone.
    Type: Application
    Filed: March 3, 2008
    Publication date: October 9, 2008
    Inventors: Larry L. Iaccino, Teng Xu, J. Scott Buchanan, Neeraj Sangar, Jeremy J. Patt, Mark A. Nierode, Kenneth R. Clem, Mobae Afeworki
  • Publication number: 20080051615
    Abstract: A hydrocarbon conversion process for producing an aromatics product containing of benzene, toluene, xylenes, or mixtures thereof. The process is carried out by converting precursors of benzene, toluene, and xylenes that are contained in a hydrocarbon feed (C6+ non-aromatic cyclic hydrocarbons, A8+ single-ring aromatic hydrocarbons having at least one alkyl group containing two or more carbon atoms; and A9+ single-ring aromatic hydrocarbons having at least three methyl groups) to produce a product that contains an increased amount of benzene, toluene, xylenes, or combinations thereof compared to said hydrocarbon feed.
    Type: Application
    Filed: August 24, 2006
    Publication date: February 28, 2008
    Inventors: Elizabeth L. Stavens, Stephen H. Brown, J. Scott Buchanan, Yun-feng Chang, Larry L. Iaccino, Paul F. Keusenkothen, John D. Y. Ou, Randall D. Partridge
  • Patent number: 7145029
    Abstract: An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is first reacted with carbon dioxide in the presence of a halogen-free carbonation catalyst to provide a corresponding cyclic carbonate and the cyclic carbonate is then reacted with an aliphatic monohydric alcohol in the presence of the carbonation catalyst and/or a transesterification catalyst and recycling the carbonation catalyst to provide a corresponding dialkyl carbonate and diol, wherein the dialkyl carbonate product exhibits a halogen concentration of about 5 ppm or less.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: December 5, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Richard H. Schlosberg, J. Scott Buchanan, Jose Guadalupe Santiesteban, Zhaozhong Jiang, William A. Weber
  • Patent number: 7084292
    Abstract: An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is first reacted with carbon dioxide in the presence of a homogeneous carbonation catalyst to provide a corresponding cyclic carbonate and the cyclic carbonate is then reacted with an aliphatic monohydric alcohol in the presence of the homogeneous carbonation catalyst and/or a heterogeneous transesterification catalyst and recycling the homogeneous carbonation catalyst to provide a corresponding dialkyl carbonate and diol.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: August 1, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: J. Scott Buchanan, Zhaozhong Jiang, Jose G. Santiesteban, William A. Weber
  • Patent number: 6930195
    Abstract: A process for the production of a dialkyl carbonate and a diol, such as dimethyl carbonate and ethylene glycol, by reacting a feed containing a cyclic carbonate, a hydroxy alkyl carbonate and an aliphatic monohydric alcohol in the presence of a transesterification catalyst is described. In another aspect, a process is described which is particularly useful for producing unsymmetric dialkyl carbonates, such as ethyl methyl carbonate.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: August 16, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: J. Scott Buchanan, Zhaozhong Jiang, Jose Guadalupe Santiesteban, William A. Weber
  • Publication number: 20040236136
    Abstract: An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is first reacted with carbon dioxide in the presence of a halogen-free carbonation catalyst to provide a corresponding cyclic carbonate and the cyclic carbonate is then reacted with an aliphatic monohydric alcohol in the presence of the carbonation catalyst and/or a transesterification catalyst and recycling the carbonation catalyst to provide a corresponding dialkyl carbonate and diol, wherein the dialkyl carbonate product exhibits a halogen concentration of about 5 ppm or less.
    Type: Application
    Filed: June 29, 2004
    Publication date: November 25, 2004
    Inventors: Richard H. Schlosberg, J. Scott Buchanan, Jose Guadalupe Santiesteban, Zhaozhong Jiang, William A. Weber