Patents by Inventor Alakananda Bhattacharyya

Alakananda Bhattacharyya 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).

  • Catalyst supports
    Patent number: 8883108
    Abstract: This invention relates to a catalyst material, and its method of making and manufacture, useful for a diversity of chemical production processes as well as various emission control processes. More specifically, it relates to a catalyst composition, preferably comprising a metal oxide felt substrate, with one or more functional surface active constituents integrated on and/or in the substrate surface, which can be used in the removal of sulfur and sulfur compounds from hot gases as well as acting to trap solid particulates and trace metals within these hot gases.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: November 11, 2014
    Assignee: UOP LLC
    Inventors: Manuela Serban, Lisa M. King, Alakananda Bhattacharyya, Tom N. Kalnes, Kurt M. Vanden Bussche
  • Process for producing terephthalic acid
    Patent number: 8884055
    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: June 8, 2011
    Date of Patent: November 11, 2014
    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
  • Process for oxidizing alkyl aromatic compounds
    Patent number: 8884054
    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: November 11, 2014
    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
  • MIXTURES OF PHYSICAL ABSORPTION SOLVENTS AND IONIC LIQUIDS FOR GAS SEPARATION
    Publication number: 20140318370
    Abstract: The invention comprises an absorbent composition and process for purification of gaseous mixtures. The composition comprises a mixture of a physical absorption solvent and an ionic liquid. It was found that the mixtures provided improved absorption of a gas component, such as carbon dioxide, when compared physical absorption solvents.
    Type: Application
    Filed: April 30, 2013
    Publication date: October 30, 2014
    Applicant: UOP LLC
    Inventors: Erin M. Broderick, Alakananda Bhattacharyya
  • MIXTURES OF PHYSICAL ABSORPTION SOLVENTS AND IONIC LIQUIDS FOR GAS SEPARATION
    Publication number: 20140319419
    Abstract: The invention comprises an absorbent composition and process for purification of gaseous mixtures. The composition comprises a mixture of a physical absorption solvent and an ionic liquid. It was found that the mixtures provided improved absorption of a gas component, such as carbon dioxide, when compared physical absorption solvents.
    Type: Application
    Filed: April 30, 2013
    Publication date: October 30, 2014
    Applicant: UOP LLC
    Inventors: Erin M. Broderick, Alakananda Bhattacharyya
  • PROCESS FOR REGENERATING IONIC LIQUIDS BY ADDING LIGHT HYDROCARBON STREAM
    Publication number: 20140291208
    Abstract: A process for removing at least one impurity from a hydrocarbon feed such as vacuum gas oil in which the process includes the steps of contacting the feed with a hydrocarbon-immiscible phosphonium ionic liquid to produce a hydrocarbon and hydrocarbon-immiscible phosphonium ionic liquid mixture, and separating the mixture to produce a hydrocarbon effluent having a reduced impurity content relative to the hydrocarbon feed.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 2, 2014
    Applicant: UOP LLC
    Inventors: Rajeswar R. Gattupalli, Massimo Sangalli, Beckay J. Mezza, Alakananda Bhattacharyya
  • Solid terephthalic acid composition
    Patent number: 8835678
    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: June 8, 2011
    Date of Patent: September 16, 2014
    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
  • PHOSPHONIUM-BASED IONIC LIQUIDS
    Publication number: 20140213435
    Abstract: Quaternary phosphonium haloaluminate compounds according to Formula (I): wherein R1-R3 are the same alkyl group; R4 is different than R1-R3 and is chosen from a C4-C12 alkyl; and X is a halogen, are provided herein for use as an ionic liquid catalyst for reacting olefins and isoparaffins to generate an alkylate.
    Type: Application
    Filed: March 28, 2014
    Publication date: July 31, 2014
    Applicant: CYTEC INDUSTRIES INC.
    Inventors: Susie C. Martins, Douglas A. Nafis, Alakananda Bhattacharyya
  • Process for oxidizing alkyl-aromatic compounds
    Patent number: 8759571
    Abstract: A process for oxidizing an alkyl-aromatic compound is described. The process includes oxidizing the alkyl-aromatic compound to produce a first oxidation product; contacting at least a portion of the first oxidation product, a solvent comprising an ionic liquid, a bromine source, a catalyst, and an oxidizing agent to produce a second oxidation product comprising at least one of an aromatic alcohol, an aromatic aldehyde, an aromatic ketone, and an aromatic carboxylic acid.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: June 24, 2014
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Joel T. Walenga
  • OXIDATION AND CRYSTALLIZATION PROCESS FOR AROMATIC CARBOXYLIC ACID PRODUCTION
    Publication number: 20140171679
    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: Application
    Filed: December 14, 2012
    Publication date: June 19, 2014
    Applicant: UOP LLC
    Inventors: Raymond Shih, Alakananda Bhattacharyya, Carl J. Stevens, Joel T. Walenga
  • ANAEROBIC CONVERSION OF 4-CARBOXYBENZALDEHYDE IN IONIC LIQUIDS
    Publication number: 20140171680
    Abstract: A method of decreasing an amount of an aromatic aldehyde in a product is described. The method includes reacting the aromatic aldehyde in the presence of a reaction medium comprising a nucleophilic solvent, or an ionic liquid and a carboxylic acid, the reaction taking place in the absence of a hydrogenating agent and an oxidizing agent, to form aromatic carboxylic acid, an aromatic alcohol, or both.
    Type: Application
    Filed: December 14, 2012
    Publication date: June 19, 2014
    Applicant: UOP LLC
    Inventors: Avram M. Buchbinder, Alakananda Bhattacharyya, Joel T. Walenga
  • Process for purifying terephthalic acid
    Patent number: 8754254
    Abstract: A process for purifying crude terephthalic acid comprising a contaminant at a first concentration, the process comprising contacting the crude terephthalic acid with a solvent comprising an ionic liquid at purifying conditions to produce a solid terephthalic acid product having a second concentration of the contaminant lower than the first concentration.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: June 17, 2014
    Assignee: UOP LLC
    Inventor: Alakananda Bhattacharyya
  • PROCESS FOR THE GENERATION OF 2,5-DIMETHYLHEXENE FROM ISOBUTENE
    Publication number: 20140163277
    Abstract: A method of making one or more 2,5-dimethylhexenes is described. The method includes reacting isobutene with isobutanol in the presence of a platinum group metal catalyst to form one or more 2,5-dimethylhexenes. A method of making p-xylene using one or more 2,5-dimethylhexenes is also described. The p-xylene can be made from totally renewable sources, if desired.
    Type: Application
    Filed: December 11, 2013
    Publication date: June 12, 2014
    Applicant: UOP LLC
    Inventors: Christopher P. Nicholas, Stuart E. Smith, Alakananda Bhattacharyya
  • Process for oligomerizing dilute ethylene
    Patent number: 8748682
    Abstract: The process and apparatus converts ethylene in a dilute ethylene stream that may be derived from an FCC product to heavier hydrocarbons. The catalyst may be an amorphous silica-alumina base with a Group VIII and/or VIB metal. The catalyst is resistant to feed impurities such as hydrogen sulfide, carbon oxides, hydrogen and ammonia. At least 40 wt-% of the ethylene in the dilute ethylene stream can be converted to heavier hydrocarbons.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: June 10, 2014
    Assignee: UOP LLC
    Inventors: Christopher P. Nicholas, Alakananda Bhattacharyya, David E. Mackowiak
  • Apparatus for the reduction of gasoline benzene content by alkylation with dilute ethylene
    Patent number: 8747785
    Abstract: The apparatus converts ethylene in a dilute ethylene stream and dilute benzene in an aromatic containing stream via alkylation to heavier hydrocarbons. The catalyst may be a zeolite such as UZM-8. The catalyst is resistant to feed impurities such as hydrogen sulfide, carbon oxides, and hydrogen and selectively converts benzene. At least 40 wt-% of the ethylene in the dilute ethylene stream and at least 20 wt-% of the benzene in the dilute benzene stream can be converted to heavier hydrocarbons.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: June 10, 2014
    Assignee: UOP LLC
    Inventors: Christopher P. Nicholas, Alakananda Bhattacharyya
  • Process for oligomerizing dilute ethylene
    Patent number: 8748681
    Abstract: The process and apparatus converts ethylene in a dilute ethylene stream that may be derived from an FCC product to heavier hydrocarbons. The catalyst may be an amorphous silica-alumina base with a Group VIII and/or VIB metal. The catalyst is resistant to feed impurities such as hydrogen sulfide, carbon oxides, hydrogen and ammonia. At least 40 wt-% of the ethylene in the dilute ethylene stream can be converted to heavier hydrocarbons.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: June 10, 2014
    Assignee: UOP LLC
    Inventors: Christopher P. Nicholas, Alakananda Bhattacharyya, David E. Mackowiak
  • Process for removing nitrogen from fuel streams with caprolactamium ionic liquids
    Patent number: 8709236
    Abstract: A process for removing a nitrogen compound from a fuel feed, such as vacuum gas oil or diesel fuel, wherein the process includes contacting the fuel feed comprising the nitrogen compound with a fuel-immiscible caprolactamium ionic liquid to produce a fuel and fuel-immiscible caprolactamium ionic liquid mixture, and separating the mixture to produce a vacuum gas oil or a diesel effluent having a reduced nitrogen content relative to the vacuum gas oil or diesel feed. The invention provides an alternate use for caprolactamium ionic liquid that is produced in large quantities for the manufacture of caprolactam.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: April 29, 2014
    Assignee: UOP LLC
    Inventors: Manuela Serban, Alan B. Levy, Lihao Tang, Alakananda Bhattacharyya
  • Catalyst composition with nanometer crystallites for slurry hydrocracking
    Patent number: 8709966
    Abstract: A process and apparatus is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products. The heavy hydrocarbon feed is slurried with a catalyst comprising iron oxide and alumina to form a heavy hydrocarbon slurry and hydrocracked to produce lighter hydrocarbons. The iron sulfide crystallites have diameters in the nanometer range.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: April 29, 2014
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Beckay J. Mezza
  • ASYMMETRIC PHOSPHONIUM HALOALUMINATE IONIC LIQUID COMPOSITIONS
    Publication number: 20140113804
    Abstract: Quaternary phosphonium haloaluminate compounds according to Formula (I): are provided herein, wherein R1-R3 are the same or different and each is chosen from a hydrocarbyl; R4 is different than R1-R3 and is chosen from a hydrocarbyl; and X is a halogen.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 24, 2014
    Applicant: Cytec Industries Inc.
    Inventors: Susie C. Martins, Douglas A. Nafis, Alakananda Bhattacharyya
  • SLURRY HYDROCRACKING PROCESS
    Publication number: 20140102944
    Abstract: One exemplary embodiment can be a slurry hydrocracking process. The process can include providing one or more hydrocarbon compounds having an initial boiling point temperature of at least about 340° C., and a slurry catalyst to a slurry hydrocracking zone. The slurry catalyst may have about 32- about 50%, by weight, iron; about 3- about 14%, by weight, aluminum; no more than about 10%, by weight, sodium; and about 2- about 10%, by weight, calcium. Typically, all catalytic component percentages are as metal and based on the weight of the dried slurry catalyst.
    Type: Application
    Filed: October 15, 2012
    Publication date: April 17, 2014
    Applicant: UOP LLC
    Inventors: Lorenz J. Bauer, Maureen L. Bricker, Beckay J. Mezza, Alakananda Bhattacharyya