Patents by Inventor Kyong-Yong Cha

Kyong-Yong Cha 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: 20160347685
    Abstract: The present invention relates to a method of preparing butadiene. More particularly, the present invention relates to a method of preparing butadiene by feeding butene and oxygen into a reactor containing a composite metal oxide catalyst and performing oxidative dehydrogenation, wherein a mole ratio of the oxygen to the butene is 1.8 to 2.2. In accordance with the present invention, a method of preparing butadiene to secure long-term operation stability by maintaining the intensity of a catalyst despite oxidative dehydrogenation and not to decrease selectivity due to less side reaction is provided.
    Type: Application
    Filed: November 25, 2015
    Publication date: December 1, 2016
    Inventors: Dae Heung CHOI, Dong Hyun KO, Myung Ji SUH, Kyong Yong CHA, Ye Seul HWANG, Jun Han KANG, Hyun Seok NAM, Joo Hyuck LEE, Sang Jin HAN, Jun Kyu HAN
  • Publication number: 20160256855
    Abstract: The present invention relates to a bismuth molybdate-based composite oxide catalyst having a microporous zeolite coating layer on the surface thereof and thus having high selectivity for 1,3-butadiene, a method of preparing the same, and a method of preparing 1,3-butadiene using the same. The catalyst has a microporous zeolite coating layer, and thus enables only gaseous products (light) to selectively pass through the zeolite coating layer, improving selectivity for 1,3-butadiene.
    Type: Application
    Filed: November 18, 2014
    Publication date: September 8, 2016
    Applicant: LG CHEM, Ltd.
    Inventors: Dae Heung CHOI, Dong Hyun KO, Jun Han KANG, Kyong Yong CHA, Dae Chul KIM, Joo Hyuck LEE, Hyun Seok NAM, Myung Ji SUH, Ye Seul HWANG, Jun Kyu HAN, Sang Jin HAN
  • Publication number: 20150375212
    Abstract: Disclosed is a multi-component bismuth molybdate catalyst for production of butadiene which comprises bismuth, molybdenum and at least one metal having a monovalent, divalent or trivalent cation, and further comprises cesium and potassium and thus has advantages of improving conversion ratio, yield and selectivity of butadiene and of providing stability of process operation.
    Type: Application
    Filed: May 2, 2014
    Publication date: December 31, 2015
    Inventors: Dae Heung CHOI, Dong Hyun KO, Jun Han KANG, Kyong Yong CHA, Dae Chul KIM, Hyun Seok NAM, Myung Ji SUH
  • Publication number: 20150352534
    Abstract: Disclosed are a catalyst composition for oxidative dehydrogenation and a method of preparing the same. More particularly, disclosed is a catalyst composition comprising a multi-ingredient-based metal oxide catalyst and a mixed metal hydroxide. The catalyst composition and the method of preparing the same according to the present disclosure may prevent loss occurring in a filling process due to superior mechanical durability and wear according to long-term use, may inhibit polymer formation and carbon deposition during reaction, and may provide a superior conversion rate and superior selectivity.
    Type: Application
    Filed: November 14, 2014
    Publication date: December 10, 2015
    Inventors: Dae Chul KIM, Dong Hyun KO, Sung June CHO, Ju 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
  • Patent number: 9199895
    Abstract: Disclosed is a method for producing 1,3-butadiene through oxidative dehydrogenation of normal-butene using a parallel reactor in which catalysts are charged into fixed bed reactors and are not physically mixed. More specifically, disclosed is a method for efficiently producing 1,3-butadiene through oxidative dehydrogenation of normal-butene using the parallel reactor containing multi-component bismuth molybdate-based catalysts exhibiting different activities to oxidative dehydrogenation for normal-butene isomers (1-butene, trans-2-butene and cis-2-butene), and butene separated from a C4 mixture containing normal-butene and normal-butane, as a reactant.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: December 1, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Kyong-Yong Cha, Dong-Hyun Ko, Dae-Chul Kim, Hyun-Seok Nam, Dae-Heung Choi
  • Publication number: 20150151292
    Abstract: Disclosed are a mesoporous composite oxide catalyst, a method for preparing the same and a method for synthesizing 1,3-butadidne using the same. The surface area is increased by introducing certain porous silica into preparation of a catalyst for synthesizing 1,3-butadiene, thereby improving a conversion ratio of normal-butene, and selectivity and yield of 1,3-butadiene, and providing economic efficiency from the viewpoint of decreasing an amount of used metal and reducing catalyst production cost.
    Type: Application
    Filed: May 2, 2014
    Publication date: June 4, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Myung Ji Suh, Dong Hyun Ko, Kyong Yong Cha, Jun Han Kang, Dae Chul Kim, Hyun Seok Nam, Dae Heung Choi
  • Publication number: 20130281748
    Abstract: Disclosed is a method for producing 1,3-butadiene through oxidative dehydrogenation of normal-butene using a parallel reactor in which catalysts are charged into fixed bed reactors and are not physically mixed. More specifically, disclosed is a method for efficiently producing 1,3-butadiene through oxidative dehydrogenation of normal-butene using the parallel reactor containing multi-component bismuth molybdate-based catalysts exhibiting different activities to oxidative dehydrogenation for normal-butene isomers (1-butene, trans-2-butene and cis-2-butene), and butene separated from a C4 mixture containing normal-butene and normal-butane, as a reactant.
    Type: Application
    Filed: November 3, 2011
    Publication date: October 24, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Kyong-Yong Cha, Dong-Hyun Ko, Dae-Chul Kim, Hyun-Seok Nam, Dae-Heung Choi
  • Publication number: 20110178332
    Abstract: The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a tungsten or tungsten oxide attached to the composite metal oxide, wherein an atomic molar ratio of the tungsten attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1.
    Type: Application
    Filed: June 9, 2009
    Publication date: July 21, 2011
    Applicants: LG CHEM, LTD, SNU R&DB FOUNDATION
    Inventors: Jin-Do Kim, Kyong-Yong Cha, Bu-Young Jo, Sang-Heup Moon
  • Publication number: 20110178333
    Abstract: The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a palladium or palladium oxide attached to the composite metal oxide, wherein an atomic molar ratio of the palladium attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1.
    Type: Application
    Filed: June 9, 2009
    Publication date: July 21, 2011
    Applicants: LG CHEM, LTD., SNU R&DB FOUNDATION
    Inventors: Jin-Do Kim, Kyong-Yong Cha, Sang-Seop Kum, Sang-Heup Moon
  • Publication number: 20110060158
    Abstract: The present invention provides a method for preparing (meth)acrylate by esterification reaction of reactants containing (meth)acrylic acid and alcohol in the presence of a catalyst, the preparation method for (meth)acrylate is characterized in that a hydrazine compound or derivative thereof is put into an esterification reactor; and (meth)acrylate prepared by the same. The present invention effectively prevents impurities generated by aldehyde that is contained in the raw material (meth)acrylic acid from remaining in a production apparatus and the catalyst, so that the process for producing (meth)acrylate proceeds smoothly.
    Type: Application
    Filed: August 10, 2010
    Publication date: March 10, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Hyun-Kyu Kim, Dong-Hyun Cho, Jun-Seok Ko, Kyong-Yong Cha, Se-Won Baek, Dong-Hyun Woo