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).
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Publication number: 20240109856Abstract: 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: ApplicationFiled: September 18, 2023Publication date: April 4, 2024Inventors: Kristen E. Allaire, Veronica G. Deak, Yili Shi, Joel T. Walenga
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Patent number: 11890594Abstract: 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: GrantFiled: April 15, 2022Date of Patent: February 6, 2024Assignee: UOP LLCInventors: James M. Hodges, Joel T. Walenga, Scott Lyle Nauert
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Publication number: 20230211319Abstract: 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: ApplicationFiled: April 15, 2022Publication date: July 6, 2023Inventors: James M. Hodges, Joel T. Walenga, Scott Lyle Nauert
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Patent number: 11639322Abstract: 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: GrantFiled: September 9, 2021Date of Patent: May 2, 2023Assignee: UOP LLCInventors: Christopher P. Nicholas, Susie C. Martins, David E. Mackowiak, Hayim Abrevaya, Joel T. Walenga
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Publication number: 20230080919Abstract: 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: ApplicationFiled: September 9, 2021Publication date: March 16, 2023Inventors: Christopher P. Nicholas, Susie C. Martins, David E. Mackowiak, Hayim Abrevaya, Joel T. Walenga
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Patent number: 10703700Abstract: 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: GrantFiled: August 24, 2017Date of Patent: July 7, 2020Assignee: UOP LLCInventors: Alakananda Bhattacharyya, Joel T. Walenga, Nina I. Kuznetsova
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Publication number: 20190062247Abstract: 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: ApplicationFiled: August 24, 2017Publication date: February 28, 2019Inventors: Alakananda Bhattacharyya, Joel T. Walenga, Nina I. Kuznetsova
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Patent number: 9266809Abstract: 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: GrantFiled: November 7, 2014Date of Patent: February 23, 2016Assignees: UOP LLC, BORESKOV INSTITUTE OF CATALYSISInventors: Alakananda Bhattacharyya, Joseph A. Kocal, Joel T. Walenga, Nikolay Y. Adonin, Nina I. Kuznetsova, Bair S. Bal'zhinimaev
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Patent number: 9233905Abstract: 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: GrantFiled: December 14, 2012Date of Patent: January 12, 2016Assignee: UOP LLCInventors: Raymond Shih, Alakananda Bhattacharyya, Carl J Stevens, Joel T. Walenga
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Patent number: 9169189Abstract: 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: GrantFiled: December 9, 2014Date of Patent: October 27, 2015Assignee: UOP LLCInventors: Alakananda Bhattacharyya, Joel T. Walenga
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Patent number: 9096482Abstract: 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: GrantFiled: June 12, 2014Date of Patent: August 4, 2015Assignee: UOP LLCInventors: Stuart Smith, Alakananda Bhattacharyya, Joel T. Walenga, Hayim Abrevaya
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Patent number: 9045407Abstract: 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: GrantFiled: June 8, 2011Date of Patent: June 2, 2015Assignees: UOP LLC, Boreskov Institute of CatalysisInventors: Alakananda Bhattacharyya, Joseph A. Kocal, Joel T. Walenga, Nikolay Y. Adonin, Nina I. Kuznetsova, Bair S. Bal'zhinimaev
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Publication number: 20150099898Abstract: 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: ApplicationFiled: October 8, 2013Publication date: April 9, 2015Applicant: UOP LLCInventors: Avram M. Buchbinder, Alakananda Bhattacharyya, Tatsamai T. Jarusiripipat, Raymond Shih, Joel T. Walenga, Nina Kuznetsova
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Publication number: 20150094487Abstract: 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: ApplicationFiled: December 9, 2014Publication date: April 2, 2015Inventors: Alakananda Bhattacharyya, Joel T. Walenga
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Publication number: 20150094486Abstract: 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: ApplicationFiled: September 27, 2013Publication date: April 2, 2015Applicant: UOP LLCInventors: Avram M. Buchbinder, Alakananda Bhattacharyya, Praneeth D. Edirisinghe, Joel T. Walenga
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Publication number: 20150065747Abstract: 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: ApplicationFiled: November 7, 2014Publication date: March 5, 2015Inventors: Alakananda Bhattacharyya, Joseph A. Kocal, Joel T. Walenga, Nikolay Y. Adonin, Nina I. Kuznetsova, Bair S. Bal'zhinimaev
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Patent number: 8946471Abstract: 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: GrantFiled: December 29, 2011Date of Patent: February 3, 2015Assignee: UOP LLCInventors: Alakananda Bhattacharyya, Joel T. Walenga
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Patent number: 8933266Abstract: 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: GrantFiled: June 8, 2011Date of Patent: January 13, 2015Assignee: UOP LLCInventors: Alakananda Bhattacharyya, Joel T. Walenga
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Patent number: 8933265Abstract: 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: GrantFiled: June 8, 2011Date of Patent: January 13, 2015Assignee: UOP LLCInventors: Alakananda Bhattacharyya, Joel T. Walenga
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Publication number: 20150005556Abstract: 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: ApplicationFiled: June 12, 2014Publication date: January 1, 2015Inventors: Stuart Smith, Alakananda Bhattacharyya, Joel T. Walenga, Hayim Abrevaya