Patents by Inventor Luwei Chen

Luwei Chen 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: 20230032512
    Abstract: The present invention relates to a method of preparing a nano-sized, iron-based catalyst, the method comprising: mixing a solution containing an iron salt with a surfactant to form a mixture; adding a basic salt solution comprising a salt of element selected from the group consisting of: alkali metals, alkaline earth metals, transition metals of groups 3 to 7 and 9 to 11 of the Periodic Table of Elements, lanthanides, and combinations of elements thereof, to the mixture to form a precipitate; and calcining said precipitate to form the iron-based catalyst, said iron-based catalyst at least partially comprising said element of said basic salt. The present invention also relates to a nano-sized, iron-based catalyst prepared by the above method and a process for the production of light olefins using the nano-sized, iron-based catalyst.
    Type: Application
    Filed: December 3, 2020
    Publication date: February 2, 2023
    Inventors: Sze Wei Daniel Ong, Luwei Chen, Chee Kok Poh, Jie Chang, Noriki Mizukami, Yoshinori Izumi, Hiroyuki Kamata, Armando Borgna
  • Publication number: 20230001389
    Abstract: The present invention relates to a hybrid iron nanoparticle catalyst comprising: i) 1 to 50 wt. % nanoparticles comprising iron and at least one of a metal M selected from the group consisting of alkali metals, alkaline earth metals, transition metals of groups 3 to 7 and 9 to 11 of the Periodic Table of Elements, lanthanides and combinations of M thereof; and ii) 50 to 99 wt. % of an aluminosilicate or silicoaluminophosphate zeolite, based on the total weight of the catalyst, wherein said nanoparticle has a diameter of about 2 to 50 nm. The present invention also relates to a method of preparing the hybrid iron nanoparticle catalyst and a process for the production of light olefins using the hybrid iron nanoparticle catalyst.
    Type: Application
    Filed: December 3, 2020
    Publication date: January 5, 2023
    Inventors: Sze Wei Daniel Ong, Luwei Chen, Chee Kok Poh, Jie Chang, Noriki Mizukami, Yoshinori Izumi, Hiroyuki Kamata, Armando Borgna
  • Patent number: 9908104
    Abstract: The invention relates to a catalyst, comprising a catalytic element disposed on a substrate, wherein said substrate has formula Ce1-xMxO2, wherein x is between about 0 and about 0.3, optionally between about 0.01 and about 0.3, and wherein M, if present, is a metallic element other than Ce, when used for catalysing a methanation reaction. There is also described use of the catalyst for catalysing a methanation reaction and a method for methanation of a feedstock including carbon monoxide and hydrogen, said method comprising contacting the feedstock with the catalyst.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: March 6, 2018
    Assignees: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, IHI CORPORATION
    Inventors: Hiroyuki Kamata, Luwei Chen, Armando Borgna, Yoshinori Izumi, Jie Chang, Catherine Kai Shin Choong
  • Patent number: 9802872
    Abstract: The invention relates to use of a catalyst comprising particles of nickel dispersed in a porous silica matrix for catalyzing a methanation reaction. There is also described a method for methanation of a feedstock at least comprising gases carbon monoxide and hydrogen, said method comprising contacting the feedstock with the catalyst.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: October 31, 2017
    Assignees: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, IHI CORPORATION
    Inventors: Luwei Chen, Zhi Qun Tian, Armando Borgna, Hiroyuki Kamata, Yoshinori Izumi
  • Publication number: 20160151765
    Abstract: The invention relates to a catalyst, comprising a catalytic element disposed on a substrate, wherein said substrate has formula Ce1-xMxO2, wherein x is between about 0 and about 0.3, optionally between about 0.01 and about 0.3, and wherein M, if present, is a metallic element other than Ce, when used for catalysing a methanation reaction. There is also described use of the catalyst for catalysing a methanation reaction and a method for methanation of a feedstock including carbon monoxide and hydrogen, said method comprising contacting the feedstock with the catalyst.
    Type: Application
    Filed: June 27, 2014
    Publication date: June 2, 2016
    Inventors: Hiroyuki Kamata, Luwei Chen, Armando Borgna, Yoshinori Izumi, Jie Chang, Catherine Kai Shin Choong
  • Publication number: 20160052837
    Abstract: The invention relates to use of a catalyst comprising particles of nickel dispersed in a porous silica matrix for catalysing a methanation reaction. There is also described a method for methanation of a feedstock at least comprising gases carbon monoxide and hydrogen, said method comprising contacting the feedstock with the catalyst.
    Type: Application
    Filed: March 28, 2014
    Publication date: February 25, 2016
    Applicant: IHI Corporation
    Inventors: Luwei Chen, Zhi Qun Tian, Armando Borgna, Hiroyuki Kamata, Yoshinori Izumi
  • Patent number: 7108804
    Abstract: In one aspect, the invention provides a catalyst for the production of synthesis gas, the catalyst comprising a) from about 0.1 to about 1.3% by weight of nickel that is supported on modified support, and b) a promoting agent. The catalyst can also comprise a dispersing agent. In another aspect, the invention provides a process for preparing the catalyst above, and a process for the catalytic partial oxidation of methane using the same catalyst.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: September 19, 2006
    Assignees: National University of Singapore, ABB Lummus Global Inc.
    Inventors: Yong Lu, Luwei Chen, Jianyi Lin, Frits M. Dautzenberg
  • Publication number: 20040054016
    Abstract: In one aspect, the invention provides a catalyst for the production of synthesis gas, the catalyst comprising a) from about 0.1 to about 1.3% by weight of nickel that is supported on modified support, and b) a promoting agent. The catalyst can also comprise a dispersing agent. In another aspect, the invention provides a process for preparing the catalyst above, and a process for the catalytic partial oxidation of methane using the same catalyst.
    Type: Application
    Filed: June 12, 2003
    Publication date: March 18, 2004
    Applicant: National University of Singapore
    Inventors: Yong Lu, Luwei Chen, Jianyi Lin, Frits M. Dautzenberg