Patents by Inventor Jeong Hwan CHUN

Jeong Hwan CHUN 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: 11925920
    Abstract: The present invention relates to a catalyst for hydrogenation of an aromatic compound, which is capable of greatly reducing the inactivation of a catalyst by using a support including a magnesium-based spinel structure, and a preparation method therefor.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: March 12, 2024
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Eung Gyu Kim, Won Yong Kim, Jeong Hwan Chun, Young Jin Cho, Joung Woo Han, Hyo Suk Kim, Wan Jae Myeong, Ki Taeg Jung
  • Publication number: 20240067521
    Abstract: This invention relates to a method for producing chlorine in a high yield through a hydrogen chloride oxidation reaction and more specifically, this invention is characterized in that chlorine is produced in a high yield by subjecting hydrogen chloride to an oxidation reaction in a mixed gas containing carbon oxide.
    Type: Application
    Filed: December 27, 2021
    Publication date: February 29, 2024
    Inventors: Jeong Hwan CHUN, Young Jin CHO, Seong Ho YUN
  • Publication number: 20230072554
    Abstract: The present invention relates to a method for producing a molding catalyst for obtaining chlorine (Cl2) through an oxidation reaction of hydrogen chloride (HCl), and more specifically, to a method for producing an oxidation reaction molding catalyst by adding heterogeneous material to a ruthenium oxide (RuO2)-supported catalyst having titanium oxide (TiO2) as a supporting body, and molding so as to be usable in a fixed bed reactor to produce chlorine (Cl2) from hydrogen chloride (HCl).
    Type: Application
    Filed: October 19, 2020
    Publication date: March 9, 2023
    Inventors: Jeong Hwan CHUN, Seong Ho YUN, Young Jin CHO
  • Publication number: 20230042463
    Abstract: The present invention relates to a molding catalyst and a method for producing the same, wherein the molding catalyst is used in the Deacon process for commercial production of chlorine using hydrogen chloride oxidation reaction, exhibits only a small reduction in catalytic activity even when exposed to harsh reaction conditions to thus be durable, and has superb mechanical strength to be suitable for use in a fixed bed catalytic reactor.
    Type: Application
    Filed: October 19, 2020
    Publication date: February 9, 2023
    Inventors: Seong Ho YUN, Jeong Hwan CHUN, Young Jin CHO
  • Publication number: 20220080395
    Abstract: The present invention relates to a catalyst for obtaining chlorine (Cl2) through an oxidation reaction of hydrogen chloride (HCl), and more particularly, to an oxidation reaction catalyst for preparing Cl2 from HCl by addition of a second heterogeneous material to a RuO2-supported catalyst using TiO2 as a support, and a preparation method therefor. According to an embodiment of the present invention, a hydrogen chloride oxidation reaction catalyst for use in a method for preparing chlorine by oxidizing hydrogen chloride includes a support and a heterogeneous material in an active ingredient. The catalyst according to the present invention has both increased catalytic activity at a low temperature and enhanced thermal stability, and thus a catalyst having improved durability such as thermal stability at a high temperature is provided. Therefore, since thermal stability is secured, the performance of the catalyst is maintained for a long time even at a high temperature.
    Type: Application
    Filed: December 10, 2019
    Publication date: March 17, 2022
    Inventors: Jeong Hwan CHUN, Young Jin CHO, Won Yong KIM, Eun Ji WOO, Ga Ram LEE
  • Publication number: 20220072513
    Abstract: The present invention relates to a method for manufacturing a ruthenium oxide-supported catalyst for preparing chlorine, and more particularly, to a method for manufacturing a catalyst and a catalyst manufactured thereby, wherein the catalyst includes a ruthenium ingredient of which a support level on an outer surface of a support is significantly improved, and the use of the catalyst in preparing chlorine can provide a high conversion rate of chlorine even at a low reaction temperature. According to an embodiment of the present invention, the method for manufacturing a ruthenium oxide-supported catalyst for preparing chlorine may include the steps of: (a) dissolving a ruthenium compound in an organic solvent to prepare a solution and supporting the same on at least one support selected from titania and alumina; (b) performing drying thereon after the supporting; and (c) performing calcining thereon after the drying.
    Type: Application
    Filed: December 10, 2019
    Publication date: March 10, 2022
    Inventors: Ga Ram LEE, Wong Yong KIM, Eun Ji WOO, Jeong Hwan CHUN, Young Jin CHO
  • Publication number: 20200316564
    Abstract: The present invention relates to a catalyst for hydrogenation of an aromatic compound, which is capable of greatly reducing the inactivation of a catalyst by using a support including a magnesium-based spinel structure, and a preparation method therefor.
    Type: Application
    Filed: October 16, 2018
    Publication date: October 8, 2020
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Eung Gyu KIM, Won Yong KIM, Jeong Hwan CHUN, Young Jin CHO, Joung Woo HAN, Hyo Suk KIM, Wan Jae MYEONG, Ki Taeg JUNG