Patents by Inventor Jun-Han Kang

Jun-Han Kang 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: 11858874
    Abstract: A method for preparing alpha-methylstyrene according to one embodiment of the present disclosure includes dehydrating a dimethylbenzyl alcohol solution in a reactor under an acid catalyst to prepare alpha-methylstyrene, where a reaction product after the dehydration reaction comprises a first reaction product including a first alpha-methylstyrene; and a second reaction product including vapor (H2O), a second alpha-methylstyrene and unreacted materials; and separating the second alpha-methylstyrene and the unreacted materials comprised in the second reaction product and recirculating the second alpha-methylstyrene and the unreacted materials to the reactor, a temperature inside the reactor during the dehydration reaction is 135° C. or higher, and a content of the acid catalyst is from 100 ppm to 1,500 ppm based on a total weight of dimethylbenzyl alcohol of the dimethylbenzyl alcohol solution.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: January 2, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Jaekwon Jeoung, Dong Hyun Ko, Sunhwan Hwang, Jun Han Kang, Sang Jin Han
  • Publication number: 20230041466
    Abstract: The present disclosure relates to a method for preparing a ceria-zirconia composite oxide, a ceria-zirconia composite oxide, and a catalyst including the same.
    Type: Application
    Filed: August 10, 2021
    Publication date: February 9, 2023
    Inventors: Sang Jin HAN, Dong Hyun KO, Jun Han KANG, Ye Seul HWANG, Sunhwan HWANG
  • Publication number: 20230034930
    Abstract: A method for preparing alpha-methylstyrene according to one embodiment of the present disclosure includes dehydrating a dimethylbenzyl alcohol solution in a reactor under an acid catalyst to prepare alpha-methylstyrene, where a reaction product after the dehydration reaction comprises a first reaction product including a first alpha-methylstyrene; and a second reaction product including vapor (H2O), a second alpha-methylstyrene and unreacted materials; and separating the second alpha-methylstyrene and the unreacted materials comprised in the second reaction product and recirculating the second alpha-methylstyrene and the unreacted materials to the reactor, a temperature inside the reactor during the dehydration reaction is 135° C. or higher, and a content of the acid catalyst is from 100 ppm to 1,500 ppm based on a total weight of dimethylbenzyl alcohol of the dimethylbenzyl alcohol solution.
    Type: Application
    Filed: August 30, 2021
    Publication date: February 2, 2023
    Inventors: Jaekwon JEOUNG, Dong Hyun KO, Sunhwan HWANG, Jun Han KANG, Sang Jin HAN
  • Patent number: 11447435
    Abstract: An exemplary embodiment of the present application provides a method for preparing butadiene, the method comprising a process of performing an oxidative dehydrogenation reaction by introducing a reactant comprising butene, oxygen, nitrogen, and steam into a reactor which is filled with a catalyst, in which during a first start-up of the oxidative dehydrogenation reaction, the oxygen is introduced into the reactor before the butene, or the oxygen is introduced into the reactor simultaneously with the butene.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: September 20, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Myungji Suh, Jun Han Kang, Kyong Yong Cha, Dong Hyun Ko
  • Patent number: 11446622
    Abstract: A socket-type fluid distributor for distributing and supplying a gas and/or liquid reactant into a reactor body. The socket-type fluid distributor includes: a distributor body, a bottom portion of which is inserted into the reactor body; a mixing flow path formed in a central portion of the distributor body such that the mixing flow path penetrates through the distributor body into the reactor body; a gas reactant input portion disposed above the distributor body and having a gas flow path; a liquid reactant input portion disposed between the distributor body and the gas reactant input portion and having a liquid flow path; and a flow control portion formed in the mixing flow path.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: September 20, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Joo Young Cheon, Dong Hyun Ko, Jun Han Kang, Sang Jin Han, Hyun Jin Cho, Jae Kwon Jeoung
  • Patent number: 11370730
    Abstract: The present specification provides a method for preparing 1,3-butadiene, the method comprising: (A) obtaining a first product comprising a light component, 1,3-butadiene, and a heavy component from a reactant comprising butene; (B) separating the heavy component from a second product comprising the 1,3-butadiene and the light component by condensing the heavy component after heat exchanging the first product; and (C) separating concentrated heavy component by reboiling the condensed heavy component.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: June 28, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Hyunseok Nam, Jun Han Kang, Kyong Yong Cha, Jaewon Jeong, Dong Hyun Ko, Jun Kyu Han, Sang Jin Han, Kyung Moo Lee, Joohyuck Lee, Daeheung Choi, Myungji Suh, Ye Seul Hwang, Sunhwan Hwang, Seongmin Kim
  • Publication number: 20220080952
    Abstract: A vehicle having a road surface recognition apparatus, may perform obtaining, by a controller, sound data for a sound detected by a sound detector while driving; obtaining, by the controller, driving data for driving information detected by a driving information detector; recognizing, by the controller, a type of road surface based on the obtained sound data and the obtained driving data; and controlling, by the controller, a traction control system based on information related to the recognized type of the road surface.
    Type: Application
    Filed: July 27, 2021
    Publication date: March 17, 2022
    Inventors: Ik Jin Um, Jun Han Kang, Jungho Park, Man Dong Kim, Chung Choo Chung, Seung-Hi Lee, Dae Jung Kim, Jin Sung Kim
  • Publication number: 20210387152
    Abstract: A socket-type fluid distributor for distributing and supplying a gas and/or liquid reactant into a reactor body. The socket-type fluid distributor includes: a distributor body, a bottom portion of which is inserted into the reactor body; a mixing flow path formed in a central portion of the distributor body such that the mixing flow path penetrates through the distributor body into the reactor body; a gas reactant input portion disposed above the distributor body and having a gas flow path; a liquid reactant input portion disposed between the distributor body and the gas reactant input portion and having a liquid flow path; and a flow control portion formed in the mixing flow path.
    Type: Application
    Filed: August 12, 2020
    Publication date: December 16, 2021
    Inventors: Joo Young Cheon, Dong Hyun Ko, Jun Han Kang, Sang Jin Han, Hyun Jin Cho, Jae Kwon Jeoung
  • Publication number: 20210238111
    Abstract: An exemplary embodiment of the present application provides a method for preparing butadiene, the method comprising a process of performing an oxidative dehydrogenation reaction by introducing a reactant comprising butene, oxygen, nitrogen, and steam into a reactor which is filled with a catalyst, in which during a first start-up of the oxidative dehydrogenation reaction, the oxygen is introduced into the reactor before the butene, or the oxygen is introduced into the reactor simultaneously with the butene.
    Type: Application
    Filed: July 10, 2019
    Publication date: August 5, 2021
    Inventors: Myungji SUH, Jun Han KANG, Kyong Yong CHA, Dong Hyun KO
  • Publication number: 20210163378
    Abstract: The present specification provides a method for preparing 1,3-butadiene, the method comprising: (A) obtaining a first product comprising a light component, 1,3-butadiene, and a heavy component from a reactant comprising butene; (B) separating the heavy component from a second product comprising the 1,3-butadiene and the light component by condensing the heavy component after heat exchanging the first product; and (C) separating concentrated heavy component by reboiling the condensed heavy component.
    Type: Application
    Filed: February 1, 2019
    Publication date: June 3, 2021
    Inventors: Hyunseok NAM, Jun Han KANG, Kyong Yong CHA, Jaewon JEONG, Dong Hyun KO, Jun Kyu HAN, Sang Jin HAN, Kyung Moo LEE, Joohyuck LEE, Daeheung CHOI, Myungji SUH, Ye Seul HWANG, Sunhwan HWANG, Seongmin KIM
  • Patent number: 10994262
    Abstract: Disclosed are a catalyst for oxidative dehydrogenation and a method of preparing the same. More particularly, a catalyst for oxidative dehydrogenation of butene having a high butene conversion rate and superior side reaction inhibition effect and thus having high reactivity and high selectivity for a product by preparing metal oxide nanoparticles and then fixing the prepared metal oxide nanoparticles to a support, and a method of preparing the same are provided.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: May 4, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Seongmin Kim, Dong Hyun Ko, Kyong Yong Cha, Dae Heung Choi, Myung Ji Suh, Jun Kyu Han, Sun Hwan Hwang, Jun Han Kang, Joo Hyuck Lee, Hyun Seok Nam, Ye Seul Hwang, Sang Jin Han
  • Patent number: 10946364
    Abstract: Provided is a catalyst system for oxidative dehydrogenation, a reactor for oxidative dehydrogenation including the catalyst system, and a method of performing oxidative dehydrogenation using the reactor. In the catalyst system, a fixed-bed reactor is filled with a catalyst for oxidative dehydrogenation in an n-stage structure (n being an integer of 2 or more), wherein each stage of the n-stage structure satisfies Equations 1 and 2 as claimed so that the concentration of an active ingredient included in the catalyst gradually increases in the direction in which reactants are fed into the reactor. Heat generated inside the reactor may be effectively controlled during oxidative dehydrogenation, thereby improving conversion rate, selectivity, and yield. In addition, catalyst deterioration may be reduced, thereby improving long-term stability of the catalyst.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: March 16, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Myungji Suh, Dong Hyun Ko, Jun Han Kang, Hyunseok Nam, Sang Jin Han, Seongmin Kim
  • Patent number: 10843173
    Abstract: A ferrite catalyst for oxidative dehydrogenation and a method of preparing the same. The ferrite catalyst is prepared using an epoxide-based sol-gel method, wherein a step of burning includes a first burning step, in which burning is performed at a temperature of 70 to 200° C.; and a second burning step, in which burning is performed after the temperature is raised from a temperature in the range of greater than 200° C. to 250° C. to a temperature in the range of 600 to 900° C.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: November 24, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Sun Hwan Hwang, Dong Hyun Ko, Jun Han Kang, Kyong Yong Cha, Joo Hyuck Lee, Hyun Seok Nam, Dae Heung Choi, Myung Ji Suh, Ye Seul Hwang, Jun Kyu Han, Sang Jin Han, Seong Min Kim
  • Patent number: 10730809
    Abstract: A method of preparing butadiene that includes supplying butene, oxygen, nitrogen, and steam into a reactor filled with a metal oxide catalyst, and performing an oxidative dehydrogenation reaction at a temperature of 300 to 450° C. as a reaction step; after the reaction step, maintaining supplying the butene, oxygen, nitrogen, and steam within a range within which the flow rate change of the butene, oxygen, nitrogen, and steam is less than ±40%, or stopping supplying the butene, and cooling the reactor to a temperature range of 200° C. or lower and higher than 70° C. as a first cooling step; and after the first cooling step, stopping supplying the butene, oxygen, nitrogen, and steam or stopping at least supplying the butene, and cooling the reactor to a temperature of 70° C. or lower as a second cooling step.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: August 4, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Myung Ji Suh, Dong Hyun Ko, Jun Han Kang, Kyong Yong Cha, Ye Seul Hwang, Jun Kyu Han, Sang Jin Han
  • Patent number: 10518250
    Abstract: The present invention relates to a ferrite-based catalyst composite, a method of preparing the same, and a method of preparing butadiene using the same. More particularly, the present invention provides a ferrite-based catalyst composite having a shape that allows effective dispersion of excess heat generated in a butadiene production process and prevention of catalyst damage and side reaction occurrence by reducing direct exposure of a catalyst to heat, a method of preparing the ferrite-based catalyst composite, and a method of preparing butadiene capable of lowering the temperature of a hot spot and reducing generation of Cox by allowing active sites of a catalyst to have a broad temperature gradient (profile) during oxidative dehydrogenation using the ferrite-based catalyst composite, and thus, providing improved process efficiency.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: December 31, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Dae Heung Choi, Dong Hyun Ko, Kyong Yong Cha, Myung Ji Suh, Ye Seul Hwang, Sun Hwan Hwang, Seong Min Kim, Jun Han Kang, Joo Hyuck Lee, Hyun Seok Nam, Sang Jin Han, Jun Kyu Han
  • Patent number: 10486150
    Abstract: The present invention relates to a catalyst for oxidative dehydrogenation and a method of preparing the same. More particularly, the present invention provides a catalyst for oxidative dehydrogenation allowing oxidative dehydrogenation reactivity to be secured while increasing a first pass yield, and a method of preparing the catalyst.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: November 26, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sun Hwan Hwang, Dong Hyun Ko, Kyong Yong Cha, Dae Heung Choi, Myung Ji Suh, Ye Seul Hwang, Jun Kyu Han, Seong Min Kim, Jun Han Kang, Joo Hyuck Lee, Hyun Seok Nam, Sang Jin Han
  • Patent number: 10343958
    Abstract: The present invention relates to a catalyst for coating a surface of a porous material and a method of treating the surface of the porous material. More particularly, when the catalyst for coating a surface of a porous material and the method of treating the surface of the porous material of the present invention are used for butadiene synthesis reaction under high gas space velocity and high pressure conditions, heat generation may be easily controlled and differential pressure may be effectively alleviated, thereby providing improved reactant conversion rate and product selectivity.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: July 9, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Myung Ji Suh, Jun Han Kang, Dong Hyun Ko, Seong Min Kim, Hyun Seok Nam, Joo Hyuck Lee, Kyong Yong Cha, Dae Heung Choi, Sang Jin Han, Jun Kyu Han, Sun Hwan Hwang, Ye Seul Hwang
  • Publication number: 20190201876
    Abstract: Provided is a catalyst system for oxidative dehydrogenation, a reactor for oxidative dehydrogenation including the catalyst system, and a method of performing oxidative dehydrogenation using the reactor. In the catalyst system, a fixed-bed reactor is filled with a catalyst for oxidative dehydrogenation in an n-stage structure (n being an integer of 2 or more), wherein each stage of the n-stage structure satisfies Equations 1 and 2 as claimed so that the concentration of an active ingredient included in the catalyst gradually increases in the direction in which reactants are fed into the reactor. Heat generated inside the reactor may be effectively controlled during oxidative dehydrogenation, thereby improving conversion rate, selectivity, and yield. In addition, catalyst deterioration may be reduced, thereby improving long-term stability of the catalyst.
    Type: Application
    Filed: April 12, 2018
    Publication date: July 4, 2019
    Inventors: Myungji SUH, Dong Hyun KO, Jun Han KANG, Hyunseok NAM, Sang Jin HAN, Seongmin KIM
  • Publication number: 20190184388
    Abstract: The present invention relates to a catalyst for oxidative dehydrogenation and a method of preparing the same. More particularly, the present invention provides a catalyst for oxidative dehydrogenation allowing oxidative dehydrogenation reactivity to be secured while increasing a first pass yield, and a method of preparing the catalyst.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 20, 2019
    Inventors: Sun Hwan HWANG, Dong Hyun KO, Kyong Yong CHA, Dae Heung CHOI, Myung Ji SUH, Ye Seul HWANG, Jun Kyu HAN, Seong Min KIM, Jun Han KANG, Joo Hyuck LEE, Hyun Seok NAM, Sang Jin HAN
  • Patent number: 10315969
    Abstract: Provided are a method of preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst, and a multicomponent bismuth-molybdenum composite metal oxide catalyst prepared thereby. According to the preparation method, since the almost same structure as that of a typical quaternary bismuth-molybdenum catalyst may be obtained by performing two-step co-precipitation, i.e., primary and secondary co-precipitation, of metal components constituting the catalyst, the reduction of catalytic activity due to the deformation of the structure of the catalyst may be suppressed.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: June 11, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Ye Seul Hwang, Dong Hyun Ko, Kyong Yong Cha, Dae Heung Choi, Myung Ji Suh, Jun Han Kang, Joo Hyuck Lee, Hyun Seok Nam, Jun Kyu Han, Sang Jin Han