Patents by Inventor Joel T. Walenga

Joel T. Walenga 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: 20240109856
    Abstract: An integrated process for making furan-2,5-dicarboxylic acid (FDCA) and FDCA derivatives combines a furfural oxidation reaction, an intermediate water removal step, and a furoate salt carboxylation reaction. A furfural feed stream is oxidized with an alkaline solution in the presence of a catalyst and excess base with air as the oxidant. The resulting furoate solution from the first process step is dried to remove water. The anhydrous solid products are sent to a carboxylation process to produce FDCA salt, which can optionally be further reacted to form FDCA or FDCA ester.
    Type: Application
    Filed: September 18, 2023
    Publication date: April 4, 2024
    Inventors: Kristen E. Allaire, Veronica G. Deak, Yili Shi, Joel T. Walenga
  • Patent number: 11890594
    Abstract: A method for preparing a mixed-metal oxide catalyst comprising molybdenum, vanadium, at least one of niobium or tantalum, and at least one of tellurium or antimony and useful for the oxidative dehydrogenation of ethane to ethylene, the method comprising preparing a catalyst precursor, pressing the precursor into a dense pellet using a pressure of greater than about 5,000 psi, and annealing the pellet to form the mixed-metal oxide catalyst.
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: February 6, 2024
    Assignee: UOP LLC
    Inventors: James M. Hodges, Joel T. Walenga, Scott Lyle Nauert
  • Publication number: 20230211319
    Abstract: A method for preparing a mixed-metal oxide catalyst comprising molybdenum, vanadium, at least one of niobium or tantalum, and at least one of tellurium or antimony and useful for the oxidative dehydrogenation of ethane to ethylene, the method comprising preparing a catalyst precursor, pressing the precursor into a dense pellet using a pressure of greater than about 5,000 psi, and annealing the pellet to form the mixed-metal oxide catalyst.
    Type: Application
    Filed: April 15, 2022
    Publication date: July 6, 2023
    Inventors: James M. Hodges, Joel T. Walenga, Scott Lyle Nauert
  • Patent number: 11639322
    Abstract: A process for sulfuric acid catalyzed alkylation involving the use of surfactants which form bi-continuous micro-emulsions with the sulfuric acid and the hydrocarbon is described. The bi-continuous phase facilitates and improves the sulfuric acid catalyzed alkylation reactions. The concentration of the surfactant is selected based on the type of olefin feed. Easy to alkylate feeds, such as 2-butene, use lower concentrations of surfactant, while feeds which are harder to alkylate, such as propene or isobutene, use higher concentrations of the surfactant. In addition, increasing the concentration of sulfuric acid when a surfactant is included resulted in higher calculated RON. The use of a surfactant and a high concentration of sulfuric acid can provide a calculated RON over 100 and close to theoretical yields.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: May 2, 2023
    Assignee: UOP LLC
    Inventors: Christopher P. Nicholas, Susie C. Martins, David E. Mackowiak, Hayim Abrevaya, Joel T. Walenga
  • Publication number: 20230080919
    Abstract: A process for sulfuric acid catalyzed alkylation involving the use of surfactants which form bi-continuous micro-emulsions with the sulfuric acid and the hydrocarbon is described. The bi-continuous phase facilitates and improves the sulfuric acid catalyzed alkylation reactions. The concentration of the surfactant is selected based on the type of olefin feed. Easy to alkylate feeds, such as 2-butene, use lower concentrations of surfactant, while feeds which are harder to alkylate, such as propene or isobutene, use higher concentrations of the surfactant. In addition, increasing the concentration of sulfuric acid when a surfactant is included resulted in higher calculated RON. The use of a surfactant and a high concentration of sulfuric acid can provide a calculated RON over 100 and close to theoretical yields.
    Type: Application
    Filed: September 9, 2021
    Publication date: March 16, 2023
    Inventors: Christopher P. Nicholas, Susie C. Martins, David E. Mackowiak, Hayim Abrevaya, Joel T. Walenga
  • Patent number: 10703700
    Abstract: A liquid phase selective oxidation process is described. The process involves the partial oxidation of alkanes to partially oxidized products. A lower alkane, a solvent, and a soluble metal catalyst are contacted in the presence of an oxidizing agent in a reaction zone under partial oxidation conditions to produce the partially oxidized products. The partially oxidized products include one or more of lower alkyl alcohols, lower alkyl ketones, and lower alkyl acetates. The soluble metal catalyst is a soluble metal salt of cobalt, manganese, chromium, titanium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, zirconium, or combinations thereof, and the promoter comprises a bromine source, an imide source, or combinations thereof.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: July 7, 2020
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga, Nina I. Kuznetsova
  • Publication number: 20190062247
    Abstract: A liquid phase selective oxidation process is described. The process involves the partial oxidation of alkanes to partially oxidized products. A lower alkane, a solvent, and a soluble metal catalyst are contacted in the presence of an oxidizing agent in a reaction zone under partial oxidation conditions to produce the partially oxidized products. The partially oxidized products include one or more of lower alkyl alcohols, lower alkyl ketones, and lower alkyl acetates. The soluble metal catalyst is a soluble metal salt of cobalt, manganese, chromium, titanium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, zirconium, or combinations thereof, and the promoter comprises a bromine source, an imide source, or combinations thereof.
    Type: Application
    Filed: August 24, 2017
    Publication date: February 28, 2019
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga, Nina I. Kuznetsova
  • Patent number: 9266809
    Abstract: A solid terephthalic acid composition and a process for producing terephthalic acid from para-xylene. The process comprises forming a mixture comprising the para-xylene, a solvent, a bromine source, and a catalyst; and oxidizing the para-xylene by contacting the mixture with an oxidizing agent at oxidizing conditions to produce a solid oxidation product comprising terephthalic acid, para-toluic acid, 4-carboxybenzaldehyde. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms and an dialkyl imidazolium ionic liquid; and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium. The solid terephthalic acid composition comprises, less than about 4,000 ppm-wt 4-carboxybenzaldehyde content, and more than about 2,000 ppm-wt a para-toluic acid.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: February 23, 2016
    Assignees: UOP LLC, BORESKOV INSTITUTE OF CATALYSIS
    Inventors: Alakananda Bhattacharyya, Joseph A. Kocal, Joel T. Walenga, Nikolay Y. Adonin, Nina I. Kuznetsova, Bair S. Bal'zhinimaev
  • Patent number: 9233905
    Abstract: A process for oxidizing and crystallizing alkyl aromatics is described. The solvent and operating conditions are controlled to maintain the aromatic carboxylic acid in solution in the reaction zone, and the aromatic carboxylic acid is crystallized in a downstream crystallizer, resulting in reduced impurity levels in the product.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: January 12, 2016
    Assignee: UOP LLC
    Inventors: Raymond Shih, Alakananda Bhattacharyya, Carl J Stevens, Joel T. Walenga
  • Patent number: 9169189
    Abstract: A process and a mixture for oxidizing an alkyl-aromatic compound comprises forming a mixture comprising the alkyl-aromatic compound, a solvent, a bromine source, a catalyst, and ammonium acetate; and contacting the mixture with an oxidizing agent at oxidizing conditions to produce an oxidation product comprising at least one of an aromatic aldehyde, an aromatic alcohol, an aromatic ketone, and an aromatic carboxylic acid. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms; and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: October 27, 2015
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga
  • Patent number: 9096482
    Abstract: A reverse disproportionation reaction of two hydrocarbon feeds allows production of a reaction mixture containing products with intermediate carbon numbers. The amount of at least one of the products with intermediate carbon numbers is equal to or greater than the amount formed from disproportionation of the hydrocarbon alone. A reverse disproportionation reaction mixture is also described.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: August 4, 2015
    Assignee: UOP LLC
    Inventors: Stuart Smith, Alakananda Bhattacharyya, Joel T. Walenga, Hayim Abrevaya
  • Patent number: 9045407
    Abstract: A process and a mixture for oxidizing an alkyl-aromatic compound comprises forming a mixture comprising the alkyl-aromatic compound, a solvent, a bromine source, and a catalyst; and contacting the mixture with an oxidizing agent at oxidizing conditions to produce an oxidation product comprising at least one of an aromatic aldehyde, an aromatic alcohol, an aromatic ketone, and an aromatic carboxylic acid. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms and an ionic liquid selected from the group consisting of an imidazolium ionic liquid, a pyridinium ionic liquid, a phosphonium ionic liquid, a tetra alkyl ammonium ionic liquid, and combinations thereof. The catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: June 2, 2015
    Assignees: UOP LLC, Boreskov Institute of Catalysis
    Inventors: Alakananda Bhattacharyya, Joseph A. Kocal, Joel T. Walenga, Nikolay Y. Adonin, Nina I. Kuznetsova, Bair S. Bal'zhinimaev
  • Publication number: 20150099898
    Abstract: A process for oxidizing alkyl aromatic compounds is described. The alkyl aromatic compound is oxidized producing an aromatic carboxylic acid, and an aromatic amide compound. The aromatic amide compound is then hydrolyzed with a hydrolyzing agent to the aromatic carboxylic acid.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 9, 2015
    Applicant: UOP LLC
    Inventors: Avram M. Buchbinder, Alakananda Bhattacharyya, Tatsamai T. Jarusiripipat, Raymond Shih, Joel T. Walenga, Nina Kuznetsova
  • Publication number: 20150094487
    Abstract: A process and a mixture for oxidizing an alkyl-aromatic compound comprises forming a mixture comprising the alkyl-aromatic compound, a solvent, a bromine source, a catalyst, and ammonium acetate; and contacting the mixture with an oxidizing agent at oxidizing conditions to produce an oxidation product comprising at least one of an aromatic aldehyde, an aromatic alcohol, an aromatic ketone, and an aromatic carboxylic acid. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms; and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium.
    Type: Application
    Filed: December 9, 2014
    Publication date: April 2, 2015
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga
  • Publication number: 20150094486
    Abstract: Ionic liquid compositions derived from imidazolium based ionic liquids that have been thermally treated or thermally and oxidatively treated are disclosed. These compositions can be utilized as the medium for oxidation of alkylaromatic compounds and their oxidized derivatives or as a medium for purification of aromatic carboxylic acids.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 2, 2015
    Applicant: UOP LLC
    Inventors: Avram M. Buchbinder, Alakananda Bhattacharyya, Praneeth D. Edirisinghe, Joel T. Walenga
  • Publication number: 20150065747
    Abstract: A solid terephthalic acid composition and a process for producing terephthalic acid from para-xylene. The process comprises forming a mixture comprising the para-xylene, a solvent, a bromine source, and a catalyst; and oxidizing the para-xylene by contacting the mixture with an oxidizing agent at oxidizing conditions to produce a solid oxidation product comprising terephthalic acid, para-toluic acid, 4-carboxybenzaldehyde. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms and an dialkyl imidazolium ionic liquid; and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium. The solid terephthalic acid composition comprises, less than about 4,000 ppm-wt 4-carboxybenzaldehyde content, and more than about 2,000 ppm-wt a para-toluic acid.
    Type: Application
    Filed: November 7, 2014
    Publication date: March 5, 2015
    Inventors: Alakananda Bhattacharyya, Joseph A. Kocal, Joel T. Walenga, Nikolay Y. Adonin, Nina I. Kuznetsova, Bair S. Bal'zhinimaev
  • Patent number: 8946471
    Abstract: Processes for oxidizing an alkyl-aromatic compound are described. The processes include contacting an alkyl-aromatic compound, a solvent, a bromine source, a catalyst, and an oxidizing agent to produce a product comprising at least one of an aromatic alcohol, an aromatic aldehyde, an aromatic ketone, and an aromatic carboxylic acid. The composition of the solvent is controlled to reduce the impurities in the product.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: February 3, 2015
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga
  • Patent number: 8933266
    Abstract: A process for producing terephthalic acid from para-xylene. The process comprises forming a mixture comprising the para-xylene, a solvent, a bromine source, a catalyst, and ammonium acetate; and oxidizing the para-xylene by contacting the mixture with an oxidizing agent at oxidizing conditions to produce a solid oxidation product comprising terephthalic acid, para-toluic acid, 4-carboxybenzaldehyde. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms, and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: January 13, 2015
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga
  • Patent number: 8933265
    Abstract: A process and a mixture for oxidizing an alkyl-aromatic compound comprises forming a mixture comprising the alkyl-aromatic compound, a solvent, a bromine source, a catalyst, and ammonium acetate; and contacting the mixture with an oxidizing agent at oxidizing conditions to produce an oxidation product comprising at least one of an aromatic aldehyde, an aromatic alcohol, an aromatic ketone, and an aromatic carboxylic acid. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms; and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: January 13, 2015
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga
  • Publication number: 20150005556
    Abstract: A reverse disproportionation reaction of two hydrocarbon feeds allows production of a reaction mixture containing products with intermediate carbon numbers. The amount of at least one of the products with intermediate carbon numbers is equal to or greater than the amount formed from disproportionation of the hydrocarbon alone. A reverse disproportionation reaction mixture is also described.
    Type: Application
    Filed: June 12, 2014
    Publication date: January 1, 2015
    Inventors: Stuart Smith, Alakananda Bhattacharyya, Joel T. Walenga, Hayim Abrevaya