Patents by Inventor Tae-Sun Chang

Tae-Sun Chang 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: 20210106979
    Abstract: A manufacturing method thereof, and the catalyst for removing the nitrogen oxide includes a powdery gamma alumina support on which at least one selected from a group of titanium (Ti), lanthanum (La), or zirconium (Zr) is supported, wherein the support may be further supported with iridium (Ir) and ruthenium (Ru).
    Type: Application
    Filed: March 24, 2020
    Publication date: April 15, 2021
    Inventors: Dalyoung YOON, Chang Hwan KIM, Tae Sun CHANG, Iljeong HEO, Sung Hun LEE, Young Woo YOU
  • Publication number: 20210077983
    Abstract: The present invention relates to a monolith catalyst for carbon-dioxide/methane reforming and a method of manufacturing the same, and more particularly to a novel monolith catalyst for a reforming reaction having improved thermal durability, configured such that a sintering inhibiting layer is formed by coating the surface of a monolith support with at least one element selected from the group consisting of Group 2, 3, 6, 13, 15 and 16 elements among elements in Period 3 or higher and an active catalyst layer is formed on the sintering inhibiting layer, thereby preventing carbon deposition and catalyst deactivation due to deterioration even upon reaction at high temperatures.
    Type: Application
    Filed: May 15, 2018
    Publication date: March 18, 2021
    Inventors: Tae Sun CHANG, Ji Hoon PARK, lljeong HEO, Jung Hyun PARK, Young Woo YOU
  • Patent number: 10758893
    Abstract: The present invention provides a solid-phase catalyst for decomposing hydrogen peroxide comprising a permanganate salt and a manganese (II) salt. The solid-phase catalyst stays a solid state in the form of nanoparticles at the time of hydrogen peroxide decomposition, and thus can be recovered for reuse and also has an excellent decomposition rate. In the method for producing a solid-phase catalyst for decomposing hydrogen peroxide according to the present invention, a solid-phase catalyst is produced from a solution containing a permanganate salt, a manganese (II) salt, and an organic acid, so that the produced solid-phase catalyst is precipitated as a solid component even after a catalytic reaction, and thus is reusable and environmentally friendly, and cost reduction can be achieved through the simplification of a catalyst production technique.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: September 1, 2020
    Assignees: Korea Research Insitute of Chemical Technology, NF CO., Ltd.
    Inventors: Iljeong Heo, Jeong Kwon Suh, Beom Sik Kim, Tae Sun Chang, Yun Ho Jeong, Ji Hoon Park, Soo Min Kim, Ji Na Choi
  • Patent number: 10589256
    Abstract: The present invention relates to a Ru—Pd bimetallic catalyst for use in hydrogenation of a compound, and more particularly to a catalyst prepared by loading both ruthenium and palladium on a g-C3N4 support and to a selective hydrogenation process of a pyridine group in a reaction system containing both a pyridine group and a benzene group using the catalyst.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: March 17, 2020
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Ji Hoon Park, Kwan Yong Jeong, Soo Min Kim, Tae Sun Chang, Iljeong Heo
  • Patent number: 10293335
    Abstract: This invention relates to a heterogeneous catalyst represented by Rh/C3N4 configured such that a complex of a rhodium compound and 3-benzoylpyridine is immobilized on a carbon nitride support.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: May 21, 2019
    Assignees: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, RESEARCH BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Jae Hyun Park, Jong Wook Bae, Tae Sun Chang, Beom Sik Kim
  • Publication number: 20190076826
    Abstract: The present invention relates to a Ru—Pd bimetallic catalyst for use in hydrogenation of a compound, and more particularly to a catalyst prepared by loading both ruthenium and palladium on a g-C3N4 support and to a selective hydrogenation process of a pyridine group in a reaction system containing both a pyridine group and a benzene group using the catalyst.
    Type: Application
    Filed: August 22, 2018
    Publication date: March 14, 2019
    Inventors: Ji Hoon PARK, Kwan Yong JEONG, Soo Min KIM, Tae Sun CHANG, Iljeong HEO
  • Patent number: 10196339
    Abstract: This invention relates to a catalyst used in a carbonylation of methanol using carbon monoxide to acetic acid, and more particularly to a heterogeneous catalyst represented by Rh/WxC (where x is an integer of 1 or 2) in which a complex of a rhodium compound and 3-benzoylpyridine is fixed on a support of tungsten carbide.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: February 5, 2019
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Jae Hyun Park, Jong Wook Bae, Tae Sun Chang, Beom Sik Kim
  • Patent number: 10180253
    Abstract: A carbon dioxide conversion system is provided. The carbon dioxide conversion system includes: an ion transfer membrane that separates oxygen in the air; an oxy-fuel combustor that combusts using oxygen that is separated at the ion transfer membrane as an oxidizing agent; and a dry-reformer that converts carbon dioxide that is generated through an oxy-fuel combustion reaction of the oxy-fuel combustor and methane gas that is supplied from the outside to carbon monoxide and hydrogen by a dry-reforming reaction.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: January 15, 2019
    Assignees: KOREA INSTITUTE OF MACHINERY & MATERIALS, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Kew-Ho Lee, Kook-Young Ahn, Sang Gyu Kang, Young Duk Lee, Tae Sun Chang, Seung Eun Nam, Ji Haeung Yu, Jong Hoon Joo
  • Publication number: 20190009253
    Abstract: The present invention provides a solid-phase catalyst for decomposing hydrogen peroxide comprising a permanganate salt and a manganese (II) salt. The solid-phase catalyst stays a solid state in the form of nanoparticles at the time of hydrogen peroxide decomposition, and thus can be recovered for reuse and also has an excellent decomposition rate. In the method for producing a solid-phase catalyst for decomposing hydrogen peroxide according to the present invention, a solid-phase catalyst is produced from a solution containing a permanganate salt, a manganese (II) salt, and an organic acid, so that the produced solid-phase catalyst is precipitated as a solid component even after a catalytic reaction, and thus is reusable and environmentally friendly, and cost reduction can be achieved through the simplification of a catalyst production technique.
    Type: Application
    Filed: January 13, 2017
    Publication date: January 10, 2019
    Inventors: Iljeong HEO, Jeong Kwon SUH, Beom Sik KIM, Tae Sun CHANG, Yun Ho JEONG, Ji Hoon PARK, Soo Min KIM, Ji Na CHOI
  • Patent number: 10124321
    Abstract: A carbon nitride heterogeneous catalyst containing rhodium, a method for preparing the catalyst, and a method for preparing acetic acid using the catalyst is disclosed. The heterogeneous catalyst is characterized in that the rhodium metal is contained in carbon nitride which is a support insoluble in a liquid solvent, such as water or alcohol. Thus, the catalyst can easily be separated from a resulting product even by a simple process such as filtration. Accordingly, the carbon nitride heterogeneous catalyst exhibits excellent long-term stability and activity by being capable of overcoming the disadvantages of the method using a conventional homogeneous catalyst and minimizing the phenomenon of rhodium leaching, compared to the results of the conventional homogeneous catalytic reactions. The catalyst can thus be effectively used for the preparation of acetic acid by a carbonylation reaction between methanol and carbon monoxide.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: November 13, 2018
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Jong Wook Bae, Tae Sun Chang, Beom Sik Kim, Jae Hyun Park, Ji Soo Nam
  • Patent number: 10113119
    Abstract: The present invention relates to a monolith catalyst for reforming reaction, and more particularly, to a thermally stable (i.e. thermal resistance-improved) monolith catalyst for reforming reaction having a novel construction such that any one of Group 1A to Group 5A metals are used as a barrier component in the existing catalyst particles to inhibit carbon deposition occurring during the reforming reaction in a process for formation of a reforming monolith catalyst while improving thermal durability as well as non-activation of the catalyst due to a degradation.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: October 30, 2018
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Il Jeong Heo, Young Woo You, Ji Hoon Park, Jung Hyun Park, Tae Sun Chang, Beom Sik Kim, Jeong Kwon Suh
  • Publication number: 20180147565
    Abstract: A carbon nitride heterogeneous catalyst containing rhodium, a method for preparing the catalyst, and a method for preparing acetic acid using the catalyst is disclosed. The heterogeneous catalyst is characterized in that the rhodium metal is contained in carbon nitride which is a support insoluble in a liquid solvent, such as water or alcohol. Thus, the catalyst can easily be separated from a resulting product even by a simple process such as filtration. Accordingly, the carbon nitride heterogeneous catalyst exhibits excellent long-term stability and activity by being capable of overcoming the disadvantages of the method using a conventional homogeneous catalyst and minimizing the phenomenon of rhodium leaching, compared to the results of the conventional homogeneous catalytic reactions. The catalyst can thus be effectively used for the preparation of acetic acid by a carbonylation reaction between methanol and carbon monoxide.
    Type: Application
    Filed: January 26, 2018
    Publication date: May 31, 2018
    Inventors: Jong Wook BAE, Tae Sun CHANG, Beom Sik KIM, Jae Hyun PARK, Ji Soo NAM
  • Publication number: 20180030357
    Abstract: The present invention relates to a monolith catalyst for reforming reaction, and more particularly, to a thermally stable (i.e. thermal resistance-improved) monolith catalyst for reforming reaction having a novel construction such that any one of Group 1A to Group 5A metals are used as a barrier component in the existing catalyst particles to inhibit carbon deposition occurring during the reforming reaction in a process for formation of a reforming monolith catalyst while improving thermal durability as well as non-activation of the catalyst due to a degradation.
    Type: Application
    Filed: July 25, 2017
    Publication date: February 1, 2018
    Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Il Jeong HEO, Young Woo YOU, Ji Hoon PARK, Jung Hyun PARK, Tae Sun CHANG, Beom Sik KIM, Jeong Kwon SUH
  • Publication number: 20180001311
    Abstract: This invention relates to a catalyst for use in the preparation of acetic acid through a methanol carbonylation reaction using carbon monoxide, and particularly to a heterogeneous catalyst represented by Rh/C3N4 configured such that a complex of a rhodium compound and 3-benzoylpyridine is immobilized on a carbon nitride support.
    Type: Application
    Filed: August 24, 2015
    Publication date: January 4, 2018
    Inventors: Jae Hyun PARK, Jong Wook BAE, Tae Sun CHANG, Beom Sik KIM
  • Publication number: 20170342012
    Abstract: This invention relates to a catalyst used in a carbonylation of methanol using carbon monoxide to acetic acid, and more particularly to a heterogeneous catalyst represented by Rh/WxC (where x is an integer of 1 or 2) in which a complex of a rhodium compound and 3-benzoylpyridine is fixed on a support of tungsten carbide.
    Type: Application
    Filed: August 24, 2015
    Publication date: November 30, 2017
    Inventors: Jae Hyun PARK, Jong Wook BAE, Tae Sun CHANG, Beom Sik KIM
  • Patent number: 9789471
    Abstract: The present invention relates to a monolith catalyst for a carbon dioxide reforming reaction and to a preparation method for same, and more specifically the invention provides a preparation method for a monolith catalyst for a methane reforming reaction using carbon dioxide, the method comprising a step of mixing and impregnating a support in a metal precursor solution, coating a monolith substrate with the solution resulting from the mixing and impregnating, drying same and then calcining the monolith substrate coated with the solution resulting from the mixing and impregnating.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: October 17, 2017
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Jeong Kwon Suh, Young Woo You, Ji Hye Lee, Hongchan Ahn, Tae Sun Chang, Beon Sik Kim
  • Publication number: 20160178278
    Abstract: The present invention relates to a food waste vacuum-drying disposal system and, particularly, to a food waste vacuum-drying disposal system, which can be installed in a food waste collection vehicle due to the simple structure thereof and can carry out vacuum-dry disposal of food waste even while moving during food waste collection. The food waste vacuum-drying disposal system of the present invention is a device capable of: sterilizing and drying inputted food waste by heat converted from a light emitted from a heating element inside a vacuum tank; condensing and discharging, as condensed water, evaporated and sublimed gas generated during a drying process; and discharging, in the air, non-condensed gas such that food waste leachate can be disposed at the same time.
    Type: Application
    Filed: August 7, 2014
    Publication date: June 23, 2016
    Inventors: Hyun Ji CHANG, Tae Sun CHANG, Woo Dam CHANG
  • Publication number: 20160030927
    Abstract: The present invention relates to a monolith catalyst for a carbon dioxide reforming reaction and to a preparation method for same, and more specifically the invention provides a preparation method for a monolith catalyst for a methane reforming reaction using carbon dioxide, the method comprising a step of mixing and impregnating a support in a metal precursor solution, coating a monolith substrate with the solution resulting from the mixing and impregnating, drying same and then calcining the monolith substrate coated with the solution resulting from the mixing and impregnating.
    Type: Application
    Filed: October 8, 2015
    Publication date: February 4, 2016
    Inventors: Jeong Kwon SUH, Young Woo YOU, Ji Hye LEE, Hongchan AHN, Tae Sun CHANG, Beon Sik KIM
  • Publication number: 20150308676
    Abstract: A carbon dioxide conversion system is provided. The carbon dioxide conversion system includes: an ion transfer membrane that separates oxygen in the air; an oxy-fuel combustor that combusts using oxygen that is separated at the ion transfer membrane as an oxidizing agent; and a dry-reformer that converts carbon dioxide that is generated through an oxy-fuel combustion reaction of the oxy-fuel combustor and methane gas that is supplied from the outside to carbon monoxide and hydrogen by a dry-reforming reaction.
    Type: Application
    Filed: September 30, 2013
    Publication date: October 29, 2015
    Inventors: Kew-Ho LEE, Kook-Young AHN, Sang-Gyu KANG, Young Duk LEE, Tae Sun CHANG, Seung Eun NAM, Ji Haeung YU, Jong Hoon JOO
  • Patent number: 8613913
    Abstract: The present invention relates to a self-molding permanent agent and a method for proceeding free-rod and free-band type permanent, more particularly to a self-molding permanent agent comprising (a) a reducing composition containing a reducing agent reducing a disulfide bond of cystine on the hair and a molding stimulant spontaneously molding to fix a hair design; (b) a molding composition inducing to mold after reacting with the molding stimulant; and (c) a softening composition releasing the action of a molding stimulant, and a method for pressing a free-rod and free-band type permanent, which overcomes a disadvantage in the conventional method for pressing a permanent that needs to wear a curling device such as rods for a permanent (perm rod) or rubber band and improves to apply a wave set without a hair-curling device for a short time, since it has a self-molding feature.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: December 24, 2013
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Tae Sun Chang, Dong Koo Lee, Tae Soon Kim, Wan Je Woo