Patents by Inventor Yuriy Roman-Leshkov

Yuriy Roman-Leshkov 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: 11179708
    Abstract: Compositions comprising metal organic frameworks and related methods and uses are generally provided, including use in selective carbonylation of heterocyclic compounds.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: November 23, 2021
    Assignee: Massachusetts Institute of Technology
    Inventors: Yuriy Román-Leshkov, Mircea Dinca, Hoyoung Park
  • Publication number: 20210346875
    Abstract: Catalytic compositions and sequential catalytic methods are generally described. in some embodiments, a composition comprises a first catalyst comprising a Cu-modified zeolite, and a second catalyst capable of a coupling reaction between (a) an intermediate resulting from a reaction of a reactant at the first catalyst, and (b) a co-reagent, wherein a rate of diffusion of the co-reagent within one or more cages and/or pores of the first catalyst is lower than a rate of diffusion of the intermediate within the one or more cages and/or pores of the first catalyst.
    Type: Application
    Filed: March 30, 2021
    Publication date: November 11, 2021
    Applicants: Massachusetts Institute of Technology, ExxonMobil Research and Engineering Company
    Inventors: Yuriy Román-Leshkov, Randall J. Meyer, Pedro M. Serna Merino, Mark Sullivan, Kimberly Dinh
  • Publication number: 20200164353
    Abstract: Compositions comprising metal organic frameworks and related methods and uses are generally provided, including use in selective carbonylation of heterocyclic compounds.
    Type: Application
    Filed: October 4, 2017
    Publication date: May 28, 2020
    Applicant: Massachusetts Institute of Technology
    Inventors: Yuriy Román-Leshkov, Mircea Dinca, Hoyoung Park
  • Patent number: 10544082
    Abstract: Described herein are solid acid catalysts and the methods for catalytically preparing ?,?-unsaturated carboxylic acids and/or esters thereof. In one aspect, a zeolite catalyst may be used. The catalyst may, in certain embodiments, be modified to improve the selectivity and/or conversion of a reaction. For instance, a catalyst may be modified by ion exchange to achieve a desirable acidity profile in order to achieve high level of conversion of reactants and selectivity for desirable products of the catalytic reaction. In another aspect, a variety of feed stocks (e.g., starting compositions) may be used including an ?-hydroxycarboxylic acid, an ?-hydroxycarboxylic acid ester, a ?-hydroxycarboxylic acid, a ?-hydroxycarboxylic acid ester, cyclic esters thereof (e.g., lactide), and combinations thereof.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: January 28, 2020
    Assignee: PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED
    Inventors: Cenan Ozmeral, Rajesh Dasari, Ramnik Singh, Yu Noda, Robert M. Rioux, Yuriy Roman-Leshkov
  • Publication number: 20190016646
    Abstract: Perovskite compounds that catalyze hydrogenolysis (e.g., hydrodeoxygenation, hydrodenitrogenation, and/or hydrodesulfurization) of heteroatom-containing compounds, as well as associated systems and methods, are generally described. In some embodiments, methods are provided for contacting a perovskite compound with a heteroatom-containing compound (e.g., a compound comprising oxygen, nitrogen, and/or sulfur) in the presence of hydrogen gas (H2) such that the perovskite compound catalyzes hydrogenolysis of the heteratom-containing compound to produce one or more hydrocarbon products (e.g., one or more aromatic hydrocarbons and/or aliphatic hydrocarbons). According to certain embodiments, the perovskite compound has the formula A1?xBxDO3, where A comprises a lanthanide, B comprises an alkaline earth metal, D comprises a transition metal, and x is greater than or equal to 0 and less than or equal to 1. Compounds, systems, and methods described herein may be useful for applications involving petroleum (e.g.
    Type: Application
    Filed: July 12, 2017
    Publication date: January 17, 2019
    Applicants: Massachusetts Institute of Technology, BP America, Inc.
    Inventors: Yuriy Román-Leshkov, Manish Shetty, William H. Green, Casey Hetrick, John Shabaker
  • Patent number: 10099979
    Abstract: The present invention generally relates to apparatuses, systems, and methods for oxidation of an alkane (e.g., methane) into an alcohol (e.g., methanol) in the presence of a catalyst.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: October 16, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Yuriy Román-Leshkov, Karthik Narsimhan
  • Patent number: 10022709
    Abstract: Transition metal carbide, nitride, phosphide, sulfide, or boride nanoparticles can be made by transforming metal oxide materials coated in a ceramic material in a controlled environment. The coating prevents sintering while allowing the diffusion of reactive gases through the inorganic matrix that can then alter the metal nanoparticle oxidation state, remove oxygen, or intercalate into the lattice to form a carbide, nitride, phosphide, sulfide, or boride.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: July 17, 2018
    Assignee: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Yuriy Roman-Leshkov, Sean Hunt
  • Publication number: 20180134647
    Abstract: Described herein are solid acid catalysts and the methods for catalytically preparing ?,?-unsaturated carboxylic acids and/or esters thereof. In one aspect, a zeolite catalyst may be used. The catalyst may, in certain embodiments, be modified to improve the selectivity and/or conversion of a reaction. For instance, a catalyst may be modified by ion exchange to achieve a desirable acidity profile in order to achieve high level of conversion of reactants and selectivity for desirable products of the catalytic reaction. In another aspect, a variety of feed stocks (e.g., starting compositions) may be used including an ?-hydroxycarboxylic acid, an ?-hydroxycarboxylic acid ester, a ?-hydroxycarboxylic acid, a ?-hydroxycarboxylic acid ester, cyclic esters thereof (e.g., lactide), and combinations thereof.
    Type: Application
    Filed: June 10, 2016
    Publication date: May 17, 2018
    Inventors: Cenan Ozmeral, Rajesh Dasari, Ramnik Singh, Yu Noda, Robert M. Rioux, Yuriy Roman-Leshkov
  • Publication number: 20170267616
    Abstract: The present invention generally relates to apparatuses, systems, and methods for oxidation of an alkane (e.g., methane) into an alcohol (e.g., methanol) in the presence of a catalyst.
    Type: Application
    Filed: November 11, 2016
    Publication date: September 21, 2017
    Applicant: Massachusetts Institute of Technology
    Inventors: Yuriy Román-Leshkov, Karthik Narsimhan
  • Publication number: 20170128917
    Abstract: Nanoparticles comprising a core including transition metal carbide, nitride, phosphide, sulfide, or boride and a noble metal shell can be made by transforming metal oxide core/noble metal shell materials coated in a ceramic material in a controlled environment. The noble metal shell can be a single monolayer. The self-assembly of metal carbide nanoparticles coated with atomically-thin noble metal monolayers results in a highly active, stable, and tunable catalytic platform.
    Type: Application
    Filed: November 6, 2016
    Publication date: May 11, 2017
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Sean Thomas Hunt, Yuriy Roman-Leshkov
  • Publication number: 20150105241
    Abstract: Transition metal carbide, nitride, phosphide, sulfide, or boride nanoparticles can be made by transforming metal oxide materials coated in a ceramic material in a controlled environment. The coating prevents sintering while allowing the diffusion of reactive gases through the inorganic matrix that can then alter the metal nanoparticle oxidation state, remove oxygen, or intercalate into the lattice to form a carbide, nitride, phosphide, sulfide, or boride.
    Type: Application
    Filed: August 6, 2014
    Publication date: April 16, 2015
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Yuriy Roman-Leshkov, Sean Hunt
  • Patent number: 8748670
    Abstract: The present invention provides methods comprising reacting a first carboxylic acid or ester with a second carboxylic acid or ester in the presence of a metal oxide comprising Zr, Ce, Mn and O to produce at least one ketone.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 10, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Herui Dou, Yuriy Roman-Leshkov
  • Patent number: 8729256
    Abstract: Disclosed are processes for isomerizing saccharides. Also disclosed are processes for converting saccharides to furan derivatives. Also disclosed are processes for converting starch to furan derivatives.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: May 20, 2014
    Assignee: California Institute of Technology
    Inventors: Manuel Moliner-Marin, Yuriy Roman-Leshkov, Mark E. Davis, Eranda Nikolla
  • Publication number: 20110207923
    Abstract: Disclosed are processes for isomerizing saccharides. Also disclosed are processes for converting saccharides to furan derivatives. Also disclosed are processes for converting starch to furan derivatives.
    Type: Application
    Filed: January 14, 2011
    Publication date: August 25, 2011
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Manuel Moliner-Marin, Yuriy Roman-Leshkov, Mark E. Davis, Eranda Nikolla
  • Patent number: 7880049
    Abstract: Described is a method for making a composition comprising alkanes. The composition is suitable for use as a liquid transportation fuel in general, and jet fuel in particular. The method includes dehydrating a feedstock solution comprising a carbohydrate, in the presence of an acid catalyst, to yield at least one furan derivative compound, in a reaction vessel containing a biphasic reaction medium: an aqueous reaction solution and a substantially immiscible organic extraction solution. The furan derivative compound is then subjected to a self-aldol condensation reaction or a crossed-aldol condensation reaction with another carbonyl compound to yield a beta-hydroxy carbonyl compound and/or an alpha-beta unsaturated carbonyl compound. The beta-hydroxy carbonyl and/or alpha-beta unsaturated compounds are then hydrogenated to yield a saturated or partially saturated compound, followed by hydrodeoxygenation (e.g.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: February 1, 2011
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: James A. Dumesic, Yuriy Roman-Leshkov
  • Publication number: 20090124839
    Abstract: Described is a method for making a composition comprising alkanes. The composition is suitable for use as a liquid transportation fuel in general, and jet fuel in particular. The method includes dehydrating a feedstock solution comprising a carbohydrate, in the presence of an acid catalyst, to yield at least one furan derivative compound, in a reaction vessel containing a biphasic reaction medium: an aqueous reaction solution and a substantially immiscible organic extraction solution. The furan derivative compound is then subjected to a self-aldol condensation reaction or a crossed-aldol condensation reaction with another carbonyl compound to yield a beta-hydroxy carbonyl compound and/or an alpha-beta unsaturated carbonyl compound. The beta-hydroxy carbonyl and/or alpha-beta unsaturated compounds are then hydrogenated to yield a saturated or partially saturated compound, followed by hydrodeoxygenation (e.g.
    Type: Application
    Filed: June 6, 2007
    Publication date: May 14, 2009
    Inventors: James A. Dumesic, Yuriy Roman-Leshkov
  • Publication number: 20080033188
    Abstract: Described is a catalytic process for converting sugars to furan derivatives (e.g. 5-hydroxymethylfurfural, furfural, dimethylfuran, etc.) using a biphasic reactor containing a reactive aqueous phase and an organic extracting phase. The process provides a cost-effective route for producing di-substituted furan derivatives. The furan derivatives are useful as value-added intermediates to produce polymers, as precursors to diesel fuel, and as fuel additives.
    Type: Application
    Filed: June 4, 2007
    Publication date: February 7, 2008
    Inventors: James Dumesic, Yuriy Roman-Leshkov, Juben Chheda
  • Patent number: RE41348
    Abstract: A multi-branch overwrap for protecting elongated items is disclosed. The overwrap is formed from a flexible, resilient substrate. Interengageable attachments are positioned on opposite sides of the substrate for releasably attaching one surface of the substrate to the other. The substrate may be biased to form a plurality of interconnected tubes or reverse folded to form channels that receive the elongated items. Biasing or folding brings the opposite sides of the substrate into overlapping relation. The overwrap may be formed from a unitary blank or assembled from component parts. Preferred materials for the substrate include polyester felt, and preferred attachments include hook and loop fasteners distributed on the surface of the substrate.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: May 25, 2010
    Assignee: Federal-Mogul World Wide, Inc.
    Inventors: Matthew P. Frederick, Eric K. Staudt, Yuriy Roman-Leshkov, John A. Barber, Jr., Thomas M. Flickinger, Robert K. Wolski