Patents by Inventor Dae Hyun Choo

Dae Hyun Choo 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: 20250083133
    Abstract: In the present disclosure, a dehydrogenation catalyst in which cobalt in the form of single atom is supported on an inorganic oxide (specifically, silica) support in which an alkali metal in the form of single atom is fixed by alkali metal pretreatment and a method for producing the same, and a method for producing olefins by dehydrogenating corresponding paraffins, specifically light paraffins in the presence of the dehydrogenation catalyst are described.
    Type: Application
    Filed: November 26, 2024
    Publication date: March 13, 2025
    Inventors: Ho Won Lee, Je Mi Lim, Hee Soo Kim, Ju Hwan Im, Dae Hyun Choo, Ka Young Kim, Jae Suk Choi
  • Patent number: 12161999
    Abstract: In the present disclosure, a dehydrogenation catalyst in which cobalt in the form of single atom is supported on an inorganic oxide (specifically, silica) support in which an alkali metal in the form of single atom is fixed by alkali metal pretreatment and a method for producing the same, and a method for producing olefins by dehydrogenating corresponding paraffins, specifically light paraffins in the presence of the dehydrogenation catalyst are described.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: December 10, 2024
    Assignees: SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
    Inventors: Ho Won Lee, Je Mi Lim, Hee Soo Kim, Ju Hwan Im, Dae Hyun Choo, Ka Young Kim, Jae Suk Choi
  • Publication number: 20240326027
    Abstract: In the present disclosure, a heterogeneous nickel-based oligomerization catalyst in which nickel in the form of single atom is loaded on an Al-mesoporous silicate support by ion exchange and a method for producing the same, and a method for oligomerizing light olefins, specifically C4 olefins using the catalyst are described.
    Type: Application
    Filed: June 10, 2024
    Publication date: October 3, 2024
    Inventors: Jae Suk Choi, Ka Young Kim, Hee Soo Kim, Ju Hwan Im, Dae Hyun Choo, Ho Won Lee, Je Mi Lim
  • Patent number: 12042787
    Abstract: In the present disclosure, a heterogeneous nickel-based oligomerization catalyst in which nickel in the form of single atom is loaded on an Al-mesoporous silicate support by ion exchange and a method for producing the same, and a method for oligomerizing light olefins, specifically C4 olefins using the catalyst are described.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: July 23, 2024
    Assignees: SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
    Inventors: Jae Suk Choi, Ka Young Kim, Hee Soo Kim, Ju Hwan Im, Dae Hyun Choo, Ho Won Lee, Je Mi Lim
  • Patent number: 11981632
    Abstract: Disclosed is a method for producing hydrogen, carbon, and ethylene from a methane-containing feedstock even without recycling of unreacted methane by providing a single process or system in which a methane-containing feedstock is subjected to two methane conversion steps. The method includes a first conversion step of producing hydrogen and carbonaceous materials and a second conversion step of producing acetylene from unreacted methane and hydrogen discharged from the first conversion step while maintaining a good methane conversion and suppressing coke formation, followed by separating and recovering ethylene and hydrogen produced through selective hydrogenation of acetylene.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: May 14, 2024
    Assignee: SK Innovation Co., Ltd.
    Inventors: Dong Min Yun, Hee Soo Kim, Ji Hoon Lee, Jung Geun Jang, Dae Hyun Choo
  • Patent number: 11858886
    Abstract: Disclosed is a process for converting methane into value-added compounds. In this process, a gas mixture containing hydrogen as well as high-concentration acetylene formed through methane pyrolysis (e.g. non-oxidative coupling of methane) is selectively hydrogenated in the presence of a bimetallic supported catalyst. This process obtains ethylene from acetylene in the gas mixture while unreacted methane and hydrogen are recovered as byproducts and/or additionally recycled.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: January 2, 2024
    Assignee: SK Innovation Co., Ltd.
    Inventors: Dong Min Yun, Ju Hwan Im, Hee Soo Kim, Do Kyoung Kim, Dae Hyun Choo
  • Publication number: 20230207960
    Abstract: A method for producing a sheet phase pseudo-boehmite. The method includes: a) putting an organic acid into an aqueous solution in which an aluminum precursor is dispersed; and b) putting a product from the process of a) into a Taylor reactor, wherein a pressure of the Taylor reactor is 1 to 100 bar.
    Type: Application
    Filed: December 27, 2022
    Publication date: June 29, 2023
    Inventors: Dong Min Yun, Hye Jin Park, Young Eun Cheon, Dae Hyun Choo
  • Publication number: 20230133746
    Abstract: Disclosed is a method for producing hydrogen, carbon, and ethylene from a methane-containing feedstock even without recycling of unreacted methane by providing a single process or system in which a methane-containing feedstock is subjected to two methane conversion steps. The method includes a first conversion step of producing hydrogen and carbonaceous materials and a second conversion step of producing acetylene from unreacted methane and hydrogen discharged from the first conversion step while maintaining a good methane conversion and suppressing coke formation, followed by separating and recovering ethylene and hydrogen produced through selective hydrogenation of acetylene.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 4, 2023
    Inventors: Dong Min Yun, Hee Soo Kim, Ji Hoon Lee, Jung Geun Jang, Dae Hyun Choo
  • Publication number: 20230131732
    Abstract: Disclosed is a process for converting methane into value-added compounds. In this process, a gas mixture containing hydrogen as well as high-concentration acetylene formed through methane pyrolysis (e.g. non-oxidative coupling of methane) is selectively hydrogenated in the presence of a bimetallic supported catalyst. This process obtains ethylene from acetylene in the gas mixture while unreacted methane and hydrogen are recovered as byproducts and/or additionally recycled.
    Type: Application
    Filed: October 26, 2022
    Publication date: April 27, 2023
    Inventors: Dong Min Yun, Ju Hwan Im, Hee Soo Kim, Do Kyoung Kim, Dae Hyun Choo
  • Patent number: 11420191
    Abstract: Disclosed herein are a dehydrogenation catalyst having single-atom cobalt loaded on a silica-based, shaped support, a preparation method therefor, and a method for preparing an olefin by dehydrogenating a corresponding paraffin, particularly light paraffin in the presence of the dehydrogenation catalyst.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: August 23, 2022
    Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.
    Inventors: Ho Won Lee, Ju Hwan Im, Hee Soo Kim, Hye Jin Park, Je Mi Lim, Dae Hyun Choo
  • Publication number: 20220008900
    Abstract: In the present disclosure, a heterogeneous nickel-based oligomerization catalyst in which nickel in the form of single atom is loaded on an Al-mesoporous silicate support by ion exchange and a method for producing the same, and a method for oligomerizing light olefins, specifically C4 olefins using the catalyst are described.
    Type: Application
    Filed: November 29, 2019
    Publication date: January 13, 2022
    Inventors: Jae Suk Choi, Ka Young Kim, Hee Soo Kim, Ju Hwan Im, Dae Hyun Choo, Ho Won Lee, Je Mi Lim
  • Publication number: 20210394160
    Abstract: In the present disclosure, a dehydrogenation catalyst in which cobalt in the form of single atom is supported on an inorganic oxide (specifically, silica) support in which an alkali metal in the form of single atom is fixed by alkali metal pretreatment and a method for producing the same, and a method for producing olefins by dehydrogenating corresponding paraffins, specifically light paraffins in the presence of the dehydrogenation catalyst are described.
    Type: Application
    Filed: October 30, 2019
    Publication date: December 23, 2021
    Inventors: Ho Won Lee, Je Mi Lim, Hee Soo Kim, Ju Hwan Im, Dae Hyun Choo, Ka Young Kim, Jae Suk Choi
  • Publication number: 20210170370
    Abstract: Disclosed herein are a dehydrogenation catalyst having single-atom cobalt loaded on a silica-based, shaped support, a preparation method therefor, and a method for preparing an olefin by dehydrogenating a corresponding paraffin, particularly light paraffin in the presence of the dehydrogenation catalyst.
    Type: Application
    Filed: November 18, 2020
    Publication date: June 10, 2021
    Inventors: Ho Won Lee, Ju Hwan Im, Hee Soo Kim, Hye Jin Park, Je Mi Lim, Dae Hyun Choo
  • Patent number: 10221187
    Abstract: A method for producing anhydrosugar alcohol according to the present invention can increase the yield of anhydrosugar alcohol even in the absence of a catalyst or in the presence of a small amount of a transition metal salt catalyst by controlling the temperature of a high-temperature reaction, which converts sugar alcohol to anhydrosugar alcohol, in two steps, that is, a first low-temperature reaction step and a second high-temperature reaction step.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: March 5, 2019
    Assignee: SK Innovation Co., Ltd.
    Inventors: Young Bo Choi, Sung Real Son, In Hyoup Song, Sang Il Lee, Sang Hyun Cho, Dae Hyun Choo
  • Patent number: 9895685
    Abstract: Disclosed herein is a method of preparing a catalyst having Pt—Pd dispersed in polymer electrolyte multilayers, suitable for use in production of hydrogen peroxide, wherein the use of the catalyst prepared by forming polymer electrolyte multilayers on an anionic resin support and performing sulfuric acid treatment and loading (insertion or attachment) of Pt—Pd particles can result in high hydrogen conversion, hydrogen selectivity and hydrogen peroxide yield for a long period of time.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: February 20, 2018
    Assignees: SK INNOVATIONS CO., LTD., SK GLOBAL CHEMICAL CO., LTD.
    Inventors: Suk Joon Hong, Yong Tak Kwon, Hwa Jung Lee, Tae Jln Kim, Dae Hyun Choo
  • Publication number: 20170253608
    Abstract: A method for producing anhydrosugar alcohol according to the present invention can increase the yield of anhydrosugar alcohol even in the absence of a catalyst or in the presence of a small amount of a transition metal salt catalyst by controlling the temperature of a high-temperature reaction, which converts sugar alcohol to anhydrosugar alcohol, in two steps, that is, a first low-temperature reaction step and a second high-temperature reaction step.
    Type: Application
    Filed: September 15, 2015
    Publication date: September 7, 2017
    Inventors: Young Bo Choi, Sung Real Son, In Hyoup Song, Sang Il Lee, Sang Hyun Cho, Dae Hyun Choo
  • Patent number: 9376353
    Abstract: This invention relates to a method of producing aromatic hydrocarbons and olefin from hydrocarbonaceous oils including large amounts of polycyclic aromatic compounds having two or more rings via partial hydrogenation in the presence of a hydrogenation catalyst and catalytic cracking in the presence of a catalytic cracking catalyst.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: June 28, 2016
    Assignee: SK Innovation Co., Ltd.
    Inventors: Cheol Joong Kim, Sung Won Kim, Sang Hun Oh, Il Yong Jeong, Kang Seok Go, Sung Bum Park, Dae Hyun Choo, Hyuck Jae Lee, Hong Chan Kim, Jae Suk Koh, Yong Seung Kim, Gyung Rok Kim, Myoung Han No, Sun Choi, Seung Hoon Oh, Tae Jin Kim
  • Patent number: 9056308
    Abstract: Disclosed are a molecular sieve catalyst and a preparation method thereof to produce light olefins from cracking naphtha catalytically in severe environments of high temperature and high moisture. In detail, the catalyst is prepared by spray-drying and calcining the mixed slurry, in which 0.01˜5.0 wt % of MnO2 and 1˜15 wt % of P2O5 are simultaneously imbedded in catalyst which consists of zeolite, clay and inorganic complex. According to the present invention, the method that manganese and phosphate are imbedded simultaneously in zeolite and inorganic complex is used to increases thermal-stability of obtained spherical catalyst, and increase olefin yield of cracking hydrocarbon such as naphtha by protecting acid-site of zeolite. To synthesize the required catalyst, the important procedures are mixing ratio and mixing sequence of Mn, P, zeolite, and inorganic complex.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: June 16, 2015
    Assignee: SK INNOVATION CO., LTD.
    Inventors: Dae Hyun Choo, Hong Chan Kim, Suk Joon Kim, Ji Min Kim, Tae Jin Kim, Sun Choi, Seung Hoon Oh, Yong Seung Kim, Deuk Soo Park, Yong Ki Park, Chul Wee Lee, Hee Young Kim, Won Choon Choi, Na Young Kang, Bu Sub Song
  • Publication number: 20150147267
    Abstract: Disclosed herein is a method of preparing a catalyst having Pt—Pd dispersed in polymer electrolyte multilayers, suitable for use in production of hydrogen peroxide, wherein the use of the catalyst prepared by forming polymer electrolyte multilayers on an anionic resin support and performing sulfuric acid treatment and loading (insertion or attachment) of Pt—Pd particles can result in high hydrogen conversion, hydrogen selectivity and hydrogen peroxide yield for a long period of time.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 28, 2015
    Inventors: Suk Joon HONG, Yong Tak KWON, Hwa Jung LEE, Tae JIn KIM, Dae Hyun CHOO
  • Patent number: 8962901
    Abstract: This invention relates to a method of producing aromatics and olefins from oils derived from coal or wood, including partially saturating and cracking the oils derived from coal or wood in a hydrogenation and reaction area, separating them depending on the number of carbons, recirculating heavy oils having 11 or more carbons to the hydrogenation and reaction area, feeding oils suitable for producing BTX to an aromatic separation process and a transalkylation process to recover aromatics, and feeding hydrocarbonaceous components having 5 or less carbons to a light separation process, thus obtaining olefins.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: February 24, 2015
    Assignee: SK Innovation CO., Ltd.
    Inventors: Hong Chan Kim, Yong Seung Kim, Sung Won Kim, Sang Hun Oh, Hyuck Jae Lee, Dae Hyun Choo, Cheol Joong Kim, Gyung Rok Kim, Myoung Han Noh, Jae Suk Koh, Hyun Chul Choi, Eun Kyoung Kim, Yoon Kyung Lee, Jong Hyung Lee, Sun Choi, Seung Hoon Oh, Jae Hyun Koh, Sang Il Lee, Seung Woo Lee