Patents by Inventor Neeta Kulkarni

Neeta Kulkarni 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: 20230226522
    Abstract: Catalysts for the hydrogenolysis of butane are described. A supported catalyst for hydrogenolysis of butane to ethane can include a support and a catalytic crystalline bimetallic composition that can include a molybdenum-iridium (Mo—Ir) crystalline composition attached to the support. The supported catalyst has a BET specific surface area of at least 100 m2/g, preferably 100 m2/g to 500 m2/g. Method of use and methods of making the catalyst are also described.
    Type: Application
    Filed: February 24, 2021
    Publication date: July 20, 2023
    Applicant: SABIC Global Technologies B.V.
    Inventors: Byeongjin BAEK, Istvan LENGYEL, Katherine BARTON, Neeta KULKARNI, Dustin FICKEL
  • Patent number: 11559795
    Abstract: A hydrogenolysis bimetallic supported catalyst comprising a first metal, a second metal, and a zeolitic support; wherein the first metal and the second metal are different; and wherein the first metal and the second metal can each independently be selected from the group consisting of iridium (Ir), platinum (Pt), rhodium (Rh), ruthenium (Ru), palladium (Pd), molybdenum (Mo), tungsten (W), nickel (Ni), and cobalt (Co).
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: January 24, 2023
    Assignee: Sabic Global Technologies, B.V.
    Inventors: Prasanna Dasari, MyatNoeZin Myint, Katherine Barton, Neeta Kulkarni, Ashim Ghosh, Raul Velasco Pelaez, Dustin Fickel, Heng Shou
  • Publication number: 20210316285
    Abstract: A hydrogenolysis bimetallic supported catalyst comprising a first metal, a second metal, and a zeolitic support; wherein the first metal and the second metal are different; and wherein the first metal and the second metal can each independently be selected from the group consisting of iridium (Ir), platinum (Pt), rhodium (Rh), ruthenium (Ru), palladium (Pd), molybdenum (Mo), tungsten (W), nickel (Ni), and cobalt (Co).
    Type: Application
    Filed: September 17, 2019
    Publication date: October 14, 2021
    Inventors: Prasanna DASARI, MyatNoeZin MYINT, Katherine BARTON, Neeta KULKARNI, Ashim GHOSH, Raul Velasco PELAEZ, Dustin FICKEL, Heng SHOU
  • Publication number: 20210162380
    Abstract: Disclosed is a catalyst comprising a zeolite comprising a framework, the framework comprising silicon and aluminum, and a noble metal. The zeolite has undergone at least a first exchange with a Group I or II cation or ammonium and thereafter is contacted with a second Group I or II cation. The step of contacting comprises an exchange, incipient wetness, or dry impregnation. The noble metal is deposited at the zeolite.
    Type: Application
    Filed: August 30, 2019
    Publication date: June 3, 2021
    Inventors: Travis CONANT, Dustin FARMER, Alla KHANMAMEDOVA, Neeta KULKARNI, Scott STEVENSON, Jun WANG
  • Publication number: 20190070597
    Abstract: Disclosed is a SAPO-34 molecular sieve having platelet morphology with the smallest dimension on the order of a few nanometers. Also disclosed are methods and systems of using said molecular sieve for catalyzing the reaction of alkyl halides to light olefins. These methods and systems have been shown to have maximum combined selectivity of ethylene and propylene of at least 90% or ranging from 90% to 98%.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 7, 2019
    Inventors: Dustin Fickel, Neeta Kulkarni
  • Publication number: 20190046964
    Abstract: Disclosed are methods of producing SAPO-34 and MeAPSO-34 molecular sieves having nano-crystal morphology and optionally a hierarchical structure. Also disclosed are methods and systems of using said molecular sieve for catalyzing the reaction of alkyl halides to light olefins.
    Type: Application
    Filed: December 21, 2016
    Publication date: February 14, 2019
    Inventors: Dustin Fickel, Neeta Kulkarni, Kaiwalya Sabnis
  • Patent number: 10059652
    Abstract: Disclosed herein are new mixed metal oxide catalysts suitable as heterogeneous catalysts for catalyzing the transesterification process of aromatic alcohols with a dialkyl carbonate to form aromatic carbonates. The heterogeneous catalyst comprises a combination of two, three, four, or more oxides of Mo, V, Nb, Ce, Cu, Sn, or an element selected from Group IA or Group IIA of the periodic table.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: August 28, 2018
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Balamurali Krishna Ramachandran Nair, Edouard Mamedov, Pamela Lawyer-Harvey, Neeta Kulkarni, Jonathan Banke
  • Publication number: 20160362349
    Abstract: Disclosed are stable catalysts, and methods for their use, that are capable of producing an olefin from an alkyl halide. The catalysts include a phosphorus-treated silicoalummophosphate (SAPO) having a structure of X/SAPO or X/Z-SAPO, where X includes a non-framework phosphorus and Z is one or more elements from Groups 2A, 3A, IVB, VIB, VIIB, VIII, IB of the Periodic Table, or compounds thereof comprised in the SAPO framework.
    Type: Application
    Filed: June 30, 2015
    Publication date: December 15, 2016
    Inventors: Ashim Kumar Ghosh, Neeta Kulkarni, Mike Mier
  • Publication number: 20160347681
    Abstract: Disclosed is a method for converting an alkyl halide to an olefin. The method can include contacting a zeolite catalyst having a chemical formula of My/nH(x-y)AlxSi(96-x)O192, where M is a metal cation having a valence of n under reaction conditions sufficient to produce an olefin hydrocarbon product comprising C2 to C4 olefins. M can include cations of metals from Groups IA, IIA, IIIA. IVB, VB, VIB VIIB, IB, IIB, IIIA or IVA, or any combination of metal cations thereof and y is 0.4?y?5.0.
    Type: Application
    Filed: May 13, 2016
    Publication date: December 1, 2016
    Inventors: Ashim Kumar Ghosh, Edouard Mamedov, Neeta Kulkarni, Armando Araujo, Mike Mier
  • Patent number: 9446389
    Abstract: A method for forming a catalyst can comprise: heating a Ge-ZSM-5 zeolite powder at a temperature of 400 to 600° C.; ion-exchanging the heat-treated zeolite powder with an alkali metal and impregnating the heat-treated zeolite powder with noble metal; heating the ion-exchanged, impregnated zeolite powder to a temperature of 250 to 350° C.; mixing the second heat-treated zeolite powder with a solid silica binder and a colloidal silica binder to form a mixture, wherein if the solid silica has a purity of less than or equal to 66 wt % of silica oxide based on the total weight of the solid silica, then the mixture is free of an extrusion aide and the colloidal silica has a particle size of less than 20 nm as measured along a major axis; forming the mixture into a shaped body; and heating the shaped body to 100 to 350° C. to result in the catalyst.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: September 20, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ashim Kumar Ghosh, Scott Stevenson, David Sullivan, Corina Mihut, Neeta Kulkarni, Meghann Simmons, Michael Mier
  • Publication number: 20160207872
    Abstract: Disclosed herein are new mixed metal oxide catalysts suitable as heterogeneous catalysts for catalyzing the transesterification process of aromatic alcohols with a dialkyl carbonate to form aromatic carbonates. The heterogeneous catalyst comprises a combination of two, three, four, or more oxides of Mo, V, Nb, Ce, Cu, Sn, or an element selected from Group IA or Group IIA of the periodic table.
    Type: Application
    Filed: August 29, 2014
    Publication date: July 21, 2016
    Inventors: Balamurali Krishna Ramachandran Nair, Edouard Mamedov, Pamela Lawyer-Harvey, Neeta Kulkarni, Jonathan Banke
  • Patent number: 9314779
    Abstract: In an embodiment, a method of forming a catalyst can comprises: treating a detemplated pentasil zeolite material with a phosphorus-containing compound to form a phosphorus treated zeolite; combining a hydrogenating material, the phosphorus treated zeolite, and a binder material to form a mixture; forming the mixture into a shaped body, wherein the mixture is formed into the shaped body without the mixture being heat-treated; and calcining the shaped body to form the catalyst. Combining the hydrogenating material with the phosphorus treated zeolite and the binder material occurs prior to forming of the shaped body.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: April 19, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ashim Kumar Ghosh, Neeta Kulkarni, Pamela Lawyer Harvey
  • Patent number: 9242233
    Abstract: Methods for preparing bound non-acidic germanium zeolite catalysts are disclosed, where the preparation is reproducible and scalable and where the catalysts have similar or the same activity and selectivities of a standard naphtha aromatization catalyst and methods for aromatizing naphtha.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: January 26, 2016
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ashim K. Ghosh, Scott A. Stevenson, Neeta Kulkarni, Mike Mier, Balamurali K. Nair, Dustin Farmer
  • Publication number: 20150165424
    Abstract: A method for forming a catalyst can comprise: heating a Ge-ZSM-5 zeolite powder at a temperature of 400 to 600° C.; ion-exchanging the heat-treated zeolite powder with an alkali metal and impregnating the heat-treated zeolite powder with noble metal; heating the ion-exchanged, impregnated zeolite powder to a temperature of 250 to 350° C.; mixing the second heat-treated zeolite powder with a solid silica binder and a colloidal silica binder to form a mixture, wherein if the solid silica has a purity of less than or equal to 66 wt % of silica oxide based on the total weight of the solid silica, then the mixture is free of an extrusion aide and the colloidal silica has a particle size of less than 20 nm as measured along a major axis; forming the mixture into a shaped body; and heating the shaped body to 100 to 350° C. to result in the catalyst.
    Type: Application
    Filed: December 13, 2013
    Publication date: June 18, 2015
    Inventors: Ashim Kumar Ghosh, Scott Stevenson, David Sullivan, Corina Mihut, Neeta Kulkarni, Meghann Simmons, Michael Mier
  • Patent number: 8969643
    Abstract: A method of converting hydrocarbons requires contacting a hydrocarbon stream containing alkylated aromatic hydrocarbons with a catalyst of a phosphorus-containing pentasil zeolite in a reactor. The phosphorus-containing pentasil zeolite having a phosphorus content of 7.5% or less by weight of zeolite, a pore volume of at least 0.2 ml/g, and a 27Al MAS NMR spectrum characterized by a peak at or near 50 ppm that is greater than any other peak in said spectrum. A benzene-enriched output stream is recovered from the reactor.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: March 3, 2015
    Assignee: Saudi Basic Industries Corporation
    Inventors: Ashim Kumar Ghosh, Pamela Harvey, Neeta Kulkarni, Manuel Castelan
  • Publication number: 20140350315
    Abstract: A method of converting hydrocarbons requires contacting a hydrocarbon stream containing alkylated aromatic hydrocarbons with a catalyst of a phosphorus-containing pentasil zeolite in a reactor. The phosphorus-containing pentasil zeolite having a phosphorus content of 7.5% or less by weight of zeolite, a pore volume of at least 0.2 ml/g, and a 27Al MAS NMR spectrum characterized by a peak at or near 50 ppm that is greater than any other peak in said spectrum. A benzene-enriched output stream is recovered from the reactor.
    Type: Application
    Filed: May 23, 2013
    Publication date: November 27, 2014
    Inventors: Ashim Kumar Ghosh, Pamela Harvey, Neeta Kulkarni, Manuel Castelan
  • Patent number: 8846559
    Abstract: A catalyst and method of forming a catalyst for use in aromatic alkylation involves treating a zeolite, which may be a ZSM-5 zeolite, with a phosphorus-containing compound. The phosphorus-treated zeolite is combined with a binder material. The bound phosphorus-treated zeolite is treated with an aqueous solution of a hydrogenating metal compound by contacting the bound phosphorus-treated zeolite with the aqueous solution and separating the aqueous solution from the bound phosphorus-treated zeolite to form a hydrogenating-metal-containing zeolite catalyst. The catalyst may be used in preparing an alkyl aromatic product by contacting a hydrogenating-metal-containing zeolite catalyst with an aromatic alkylation feed of an aromatic compound and an alkylating agent under reaction conditions suitable for aromatic alkylation.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: September 30, 2014
    Assignee: Saudi Basic Industries Corporation
    Inventors: Ashim Kumar Ghosh, Neeta Kulkarni
  • Publication number: 20140046109
    Abstract: In an embodiment, a method of forming a catalyst can comprises: treating a detemplated pentasil zeolite material with a phosphorus-containing compound to form a phosphorus treated zeolite; combining a hydrogenating material, the phosphorus treated zeolite, and a binder material to form a mixture; forming the mixture into a shaped body, wherein the mixture is formed into the shaped body without the mixture being heat-treated; and calcining the shaped body to form the catalyst. Combining the hydrogenating material with the phosphorus treated zeolite and the binder material occurs prior to forming of the shaped body.
    Type: Application
    Filed: August 9, 2012
    Publication date: February 13, 2014
    Applicant: SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Ashim Kumar Ghosh, Neeta Kulkarni, Pamela Lawyer Harvey
  • Publication number: 20130296625
    Abstract: Methods for preparing bound non-acidic germanium zeolite catalysts arc disclosed, where the preparation is reproducible and scalable and where the catalysts have similar or the same activity and selectivities of a standard naphtha aromatization catalyst and methods for aromatizing naphtha.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 7, 2013
    Inventors: Ashim K. Ghosh, Scott A. Stevenson, Neeta Kulkarni, Mike Mier, Balamurali K. Nair, Dustin Farmer
  • Patent number: 8436222
    Abstract: This invention relates to a process for pretreating a zeolite catalyst, specifically a zeolite which has been modified with phosphorus. The catalyst may be used in a process for alkylation of aromatics, specifically toluene methylation. The pretreatment is first to contact the catalyst with the process reactants used in a process for alkylation of aromatics for at least two hours at conditions to produce an alkylated aromatic product and then with a gaseous stream containing oxygen at a temperature and for a time until there is no oxygen consumption. The zeolite may be a MFI zeolite. This pretreatment procedure for a phosphorus-modified zeolite catalyst produces a catalyst which has increased run time, i.e., decreased deactivation rate, compared to a fresh catalyst, even after successive regenerations.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: May 7, 2013
    Assignee: Saudi Basic Industries Corporation
    Inventors: Ashim Kumar Ghosh, Mohammad Shafiei, Manuel Castelan, Pamela Harvey, Neeta Kulkarni