Patents by Inventor Natalia Semagina

Natalia Semagina 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).

  • Metal-loaded zeolite catalysts for the halogen-free conversion of dimethyl ether to methyl acetate
    Patent number: 11123719
    Abstract: A catalyst for the carbonylation of dimethyl ether to methyl acetate. The catalyst comprises a zeolite, such as a mordenite zeolite, at least one Group IB metal, such as copper, and/or at least one Group VIII metal, such as iron, and at least one Group IIB metal, such as zinc. Such a catalyst with combined metals provides enhanced catalytic activity, improved stability, and improved selectivity to methyl acetate, and does not require a halogen promoter, as compared to a metal-free or copper only zeolite.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: September 21, 2021
    Assignee: Enerkem, Inc.
    Inventors: Allen Artur Carl Reule, Natalia Semagina, Esteban Chornet
  • Metal-loaded zeolite catalysts for the halogen-free conversion of dimethyl ether to methyl acetate
    Patent number: 10695756
    Abstract: A catalyst for the carbonylation of dimethyl ether to methyl acetate. The catalyst comprises a zeolite, such as a mordenite zeolite, at least one Group IB metal, such as copper, and/or at least one Group VIII metal, such as iron, and at least one Group IIB metal, such as zinc. Such a catalyst with combined metals provides enhanced catalytic activity, improved stability, and improved selectivity to methyl acetate, and does not require a halogen promoter, as compared to a metal-free or copper only zeolite.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: June 30, 2020
    Assignee: Enerkem, Inc.
    Inventors: Allen Artur Carl Reule, Natalia Semagina, Esteban Chornet
  • Metal-Loaded Zeolite Catalysts for the Halogen-Free Conversion of Dimethyl Ether to Methyl Acetate
    Publication number: 20200094230
    Abstract: A catalyst for the carbonylation of dimethyl ether to methyl acetate. The catalyst comprises a zeolite, such as a mordenite zeolite, at least one Group IB metal, such as copper, and/or at least one Group VIII metal, such as iron, and at least one Group IIB metal, such as zinc. Such a catalyst with combined metals provides enhanced catalytic activity, improved stability, and improved selectivity to methyl acetate, and does not require a halogen promoter, as compared to a metal-free or copper only zeolite.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Inventors: Allen Artur Carl Reule, Natalia Semagina, Esteban Chornet
  • Metal-Loaded Zeolite Catalysts for the Halogen-Free Conversion of Dimethyl Ether to Methyl Acetate
    Publication number: 20170072388
    Abstract: A catalyst for the carbonylation of dimethyl ether to methyl acetate. The catalyst comprises a zeolite, such as a mordenite zeolite, at least one Group IB metal, such as copper, and/or at least one Group VIII metal, such as iron, and at least one Group IIB metal, such as zinc. Such a catalyst with combined metals provides enhanced catalytic activity, improved stability, and improved selectivity to methyl acetate, and does not require a halogen promoter, as compared to a metal-free or copper only zeolite.
    Type: Application
    Filed: May 31, 2016
    Publication date: March 16, 2017
    Inventors: Allen Artur Carl Reule, Natalia Semagina, Esteban Chornet
  • Platinum-free monometallic and bimetallic nanoparticles as ring-opening catalysts
    Patent number: 9040449
    Abstract: Nanoparticle catalyst compositions and methods for preparation of same are described. The nanoparticle catalysts are platinum-free and are useful in effecting selective ring-opening reactions, for example in upgrading heavy oil. The catalyst may be of monometallic composition, or may comprise an alloyed or core-shell bimetallic composition. The nanoparticles are of controlled size and shape.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: May 26, 2015
    Assignee: Governors of the University of Alberta
    Inventors: Natalia Semagina, Xing Yin, Jing Shen, Kavithaa Loganathan