Patents by Inventor Yawu T. Chi

Yawu T. Chi 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 compositions and process for direct production of hydrogen cyanide in an acrylonitrile reactor feed stream
    Patent number: 11779905
    Abstract: The present invention relates to catalyst compositions containing a mixed oxide catalyst of formula (I) or formula (II) as described herein, their preparation, and their use in a process for ammoxidation of various organic compounds to their corresponding nitriles and to the selective catalytic oxidation of excess NH3 present in effluent gas streams to N2 and/or NOx.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: October 10, 2023
    Assignee: Ascend Performance Materials Operations LLC
    Inventors: Yawu T. Chi, Scott G. Moffatt, Mikhail Khramov, Ranjeeth Reddy Kalluri, Bruce F. Monzyk, Soundar Ramchandran, Marty Alan Lail, Maruthi Sreekanth Pavani
  • Processes and systems for using silica particles in fluid bed reactor
    Patent number: 11680038
    Abstract: The present disclosure relates to fluid bed processes that utilize silica particles as a fluidization aid. The process comprises reacting one or more reactants in a reactor comprising a fluid bed to form a product. The fluid bed comprises a catalyst composition comprising a catalyst and an inert additive composition comprising silica particles from 0.5 wt % to 30 wt %, based on the total weight of the catalyst composition. The silica particles are discrete, inert particles that are mixed with the catalyst in the fluid bed.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: June 20, 2023
    Assignee: Ascend Performance Materials Operations LLC
    Inventors: Yawu T. Chi, James Sutton, Ali Akhavan, Celia L. Kniepmann, Matthew D. Cox, Valerie S. Monical
  • PROCESSES AND SYSTEMS FOR USING SILICA PARTICLES IN FLUID BED REACTOR
    Publication number: 20210300862
    Abstract: The present disclosure relates to fluid bed processes that utilize silica particles as a fluidization aid. The process comprises reacting one or more reactants in a reactor comprising a fluid bed to form a product. The fluid bed comprises a catalyst composition comprising a catalyst and an inert additive composition comprising silica particles from 0.5 wt % to 30 wt %, based on the total weight of the catalyst composition. The silica particles are discrete, inert particles that are mixed with the catalyst in the fluid bed.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 30, 2021
    Applicant: Ascend Performance Materials Operations LLC
    Inventors: Yawu T. CHI, James Sutton, Ali Akhavan, Celia L. Kniepmann, Matthew D. Cox, Valerie S. Monical
  • Processes and systems for using silica particles in fluid bed reactor
    Patent number: 11059774
    Abstract: The present disclosure relates to fluid bed processes that utilize silica particles as a fluidization aid. The process comprises reacting one or more reactants in a reactor comprising a fluid bed to form a product. The fluid bed comprises a catalyst composition comprising a catalyst and an inert additive composition comprising silica particles from 0.5 wt % to 30 wt %, based on the total weight of the catalyst composition. The silica particles are discrete, inert particles that are mixed with the catalyst in the fluid bed.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: July 13, 2021
    Assignee: Ascend Performance Materials Operations LLC
    Inventors: Yawu T. Chi, James Sutton, Ali Akhavan, Celia L. Kniepmann, Matthew D. Cox, Valerie S. Monical
  • CATALYST COMPOSITIONS AND PROCESS FOR DIRECT PRODUCTION OF HYDROGEN CYANIDE IN AN ACRYLONITRILE REACTOR FEED STREAM
    Publication number: 20210146339
    Abstract: The present invention relates to catalyst compositions containing a mixed oxide catalyst of formula (I) or formula (II) as described herein, their preparation, and their use in a process for ammoxidation of various organic compounds to their corresponding nitriles and to the selective catalytic oxidation of excess NH3 present in effluent gas streams to N2 and/or NOx.
    Type: Application
    Filed: January 29, 2021
    Publication date: May 20, 2021
    Applicant: Ascend Performance Materials Operations LLC
    Inventors: Yawu T. CHI, Scott G. MOFFATT, Mikhail KHRAMOV, Ranjeeth Reddy KALLURI, Bruce F. MONZYK, Soundar RAMCHANDRAN, Marty Alan LAIL, Maruthi Sreekanth PAVANI
  • PROCESSES AND SYSTEMS FOR USING SILICA PARTICLES IN FLUID BED REACTOR
    Publication number: 20200002271
    Abstract: The present disclosure relates to fluid bed processes that utilize silica particles as a fluidization aid. The process comprises reacting one or more reactants in a reactor comprising a fluid bed to form a product. The fluid bed comprises a catalyst composition comprising a catalyst and an inert additive composition comprising silica particles from 0.5 wt % to 30 wt %, based on the total weight of the catalyst composition. The silica particles are discrete, inert particles that are mixed with the catalyst in the fluid bed.
    Type: Application
    Filed: June 27, 2019
    Publication date: January 2, 2020
    Applicant: Ascend Performance Materials Operations LLC
    Inventors: Yawu T. CHI, James Sutton, Ali Akhavan, Celia L. Kniepmann, Matthew D. Cox, Valerie S. Monical
  • CATALYST COMPOSITIONS AND PROCESS FOR DIRECT PRODUCTION OF HYDROGEN CYANIDE IN AN ACRYLONITRILE REACTOR FEED STREAM
    Publication number: 20190009252
    Abstract: The present invention relates to catalyst compositions containing a mixed oxide catalyst of formula (I) or formula (II) as described herein, their preparation, and their use in a process for ammoxidation of various organic compounds to their corresponding nitriles and to the selective catalytic oxidation of excess NH3 present in effluent gas streams to N2 and/or NOx.
    Type: Application
    Filed: January 9, 2017
    Publication date: January 10, 2019
    Applicant: Ascend Performance Materials Operations LLC
    Inventors: Yawu T. Chi, Scott G. Moffatt, Mikhail Khramov, Ranjeeth Reddy Kalluri, Bruce F. Monzyk, Soundar Ramchandran, Marty Alan Lail, Maruthi Sreekanth Pavani