Patents by Inventor Ki Won Jun
Ki Won Jun 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: 20100093523Abstract: The present invention relates to a cobalt/phosphorus-alumina catalyst in which cobalt is supported as an active component on a phosphorus-alumina support wherein phosphorus is supported on alumina surface. With a bimodal pore structure of pores of relatively different pore sizes, the catalyst provides superior heat- and matter-transfer performance and excellent catalytic reactivity. Especially, when Fischer-Tropsch (F-T) reaction is performed using the catalyst, deactivation by the water produced during the F-T reaction is inhibited and, at the same time, the dispersion and reducing property of cobalt and other active component are improved. Therefore, the cobalt/phosphorus-alumina catalyst for F-T reaction in accordance with the present invention provides good carbon monoxide conversion and stable selectivity for liquid hydrocarbons.Type: ApplicationFiled: January 30, 2008Publication date: April 15, 2010Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, DAELIM INDUSTRIAL CO., LTD., DOOSAN MECATEC CO., LTD., KOREA NATIONAL OIL CORPORATION, HYUNDAI ENGINEERING CO., LTD., SK ENERGY CO., LTD.Inventors: Ki-won Jun, Jong-Wook Bae, Seung-Moon Kim, Yun-Jo Lee
-
Publication number: 20090104108Abstract: The present invention relates to a method for preparing boehmite and ?-alumina with high surface area, and more particularly, to a method comprising hydrolysis of aluminum alkoxides to produce boehmite and calcination to produce ?-alumina, wherein an alcohol is used as a reaction solvent and a small amount of water and a particular organic carboxylic acid are added so that not only the reaction solvent is easily recovered and energy required for drying is significantly reduced but also it provides boehmite having nano-sized particles, high surface area, and high purity. Further, the prepared ?-alumina may be suitable for high value added industrial applications such as manufacture of adsorbents, catalysts, catalyst supports and chromatography materials.Type: ApplicationFiled: January 25, 2006Publication date: April 23, 2009Inventors: Ki-Won Jun, Yun-Jo Lee, Seung-Moon Kim, Jeong Yeon Kim
-
Publication number: 20090023958Abstract: The present invention relates a process for preparing dimethyl ether from crude methanol in an adiabatic reactor(s)/and more particularly to a process for preparing dimethyl ether wherein crude methanol containing water is dehydrated by using (1) a catalytic system in which the reactant contacts a catalyst 1 of hydrophobic zeolite partially substituted by a specific metal cation and subsequently a catalyst 2 selected from ?-alumina or silica-alumina; and (2) an adiabatic reactor(s). In the present invention, the dehydration is accomplished effectively by avoiding the formation or byproducts and the deactivation of catalyst. Therefore, dimethyl ether useful as clean fuel and a raw material in chemical industry can be produced from crude methanol with an enhanced yield in an adiabatic reactor(s).Type: ApplicationFiled: August 19, 2005Publication date: January 22, 2009Inventors: Ki-won Jun, Hyun-seog Roh, Jae-woo Kim, Jeonkeun Oh, Jinhwan Bang
-
Patent number: 7417004Abstract: This invention relates to a catalyst for synthesis of dimethyl ether and its preparation methods. More specifically, this invention relates to a catalyst with improved formulation for a highly efficient synthesis of dimethyl ether via dehydration of methanol. These catalysts are composed of hydrophobic zeolites, cations selected from alkali metal, alkaline earth metal, or ammonium along with alumina, silica, or silica-alumina.Type: GrantFiled: August 30, 2004Date of Patent: August 26, 2008Assignee: SK Energy Co., Ltd.Inventors: Ki-Won Jun, Hyun-Seog Roh, Jae-Woo Kim, Jeon Keun Oh, Jin Hwan Bang
-
Publication number: 20080197051Abstract: Disclosed herein are a desulfurizing agent for removing organic sulfur compounds, a preparation method thereof, and a method for removing organic sulfur compounds using the same. The desulfurizing agent consists of a copper-zinc-aluminum complex free of alkaline metal, with a large surface area. When being contacted with organic sulfur compounds, such as t-butylmercaptan, tetrahydrothiophene, dimethylsulfide, etc., the desulfurizing agent exhibits excellent desulfurization ability and is not de-graded especially at high temperatures as high as 150˜350° C.Type: ApplicationFiled: July 31, 2006Publication date: August 21, 2008Applicant: SK ENERGY CO., LTD.Inventors: Byong Sung Kwak, Young Seek Yoon, Jin Hong Kim, Il Su Kim, Keun Seob Choi, Jin Hwan Bang, Ki Won Jun, Hyung Tae Kim, Seung Moon Kim
-
Patent number: 7232553Abstract: Disclosed is a plate type steam reformer comprising a plate type burner capable of heating a broad area of a reactor as a heat source, positioned on a bottom of the reformer; a reforming reactor requiring a relatively high temperature, positioned over the burner; a high temperature water gas shift reactor requiring a relatively moderate temperature, positioned over the reforming reactor; a low temperature water gas shift reactor requiring a relatively low temperature, positioned over the high temperature water gas shift reactor; and dividing plates positioned between the above three reactors and between the reforming reactor and the burner such that combustion exhaust gas produced in the burner supplies heat to the above reactors.Type: GrantFiled: May 2, 2002Date of Patent: June 19, 2007Assignees: Korea Gas Corporation, Korea Research Institute of Chemical TechnologyInventors: Young-Sam Oh, Young-Soon Baek, Taek-Yong Song, Sang-Eon Park, Ki-Won Jun, Ri-Sang Choi
-
Publication number: 20070117709Abstract: This invention relates to a catalyst for synthesis of dimethyl ether and its preparation methods. More specifically, this invention relates to a catalyst with improved formulation for a highly efficient synthesis of dimethyl ether via dehydration of methanol. These catalysts are composed of hydrophobic zeolites, cations selected from alkali metal, alkaline earth metal, or ammonium along with alumina, silica, or silica-alumina.Type: ApplicationFiled: August 30, 2004Publication date: May 24, 2007Inventors: Ki-Won Jun, Hyun-Seog Roh, Jae-Woo Kim, Jeon-Keun Oh, Jin Bang
-
Patent number: 7214251Abstract: The compact steam reformer of the present invention integrally comprises a housing; a reforming reactor having an upper mixing compartment for mixing natural gas and steam and a lower compartment for accommodating a catalyst bed; a natural gas feeding coiled pipe through which natural gas is introduced while being heated; a steam generating coiled pipe in which pure water is converted to steam by the exhaust; a metal fiber burner for heating the reforming reactor; a high-temperature converter for primarily removing carbon monoxide from a synthetic gas; a low-temperature converter for secondarily reducing the carbon monoxide level of the synthetic gas; and a heat exchanger, provided between the high-temperature converter and the low-temperature converter, for cooling the gas effluent from the high-temperature converter.Type: GrantFiled: April 23, 2002Date of Patent: May 8, 2007Assignees: Korea Gas Corporation, Kyungdong City Gas Co. Ltd., Korea Research Institute of Chemical TechnologyInventors: Young-Sam Oh, Young-Soon Baek, Won-Ihl Cho, Taek-Yong Song, Jeong-Hwan Lee, Sang-Eon Park, Ki-Won Jun, Ri-Sang Choi
-
Patent number: 7157404Abstract: The present invention relates to a catalyst for preparing hydrocarbons of carbon dioxide and more particularly, the Fe—Cu—K/?—Al2O3 catalyst prepared by impregnation which enables producing hydrocarbons in high yield for more than 2000 hours due to its excellent activity and stability.Type: GrantFiled: July 14, 2000Date of Patent: January 2, 2007Assignee: Korea Research Institute of Chemical TechnologyInventors: Ki-Won Jun, Jin-Soo Hwang, Kyu-Wan Lee, Myoung-Jae Choi
-
Publication number: 20060135823Abstract: The present invention relates to a process for preparing dimethyl ether from methanol. More particularly, this invention relates to an improved process for preparing dimethyl ether with high yield useful as a clean fuel as well as a raw material in chemical industry performed via a catalytic system, wherein dehydration of methanol is first carried out by using a hydrophilic solid acid catalyst and then subsequent dehydration of methanol is carried out continuously by using a hydrophobic zeolite solid acid catalyst in the concurrent presence of unreacted methanol, dimethyl ether produced and water.Type: ApplicationFiled: April 10, 2003Publication date: June 22, 2006Applicant: SK CorporationInventors: Ki-Won Jun, Hyun-Seog Roh, Kew-Ho Lee, Jae-Woo Kim
-
Patent number: 6808652Abstract: A modified ⊖-Al2O3-supported nickel reforming catalyst and its use for producing synthesis gas from natural gas, more specifically to a nickel reforming catalyst expressed by the following formula 1, having improved coke resistance, high-temperature catalysis stability and catalytic activity, which is prepared by coating nickel or mixture of nickel and cocatalyst (M1-M2-Ni) on a Al2O3 support modified with metal (M3-M4-ZrO2/⊖-Al2O3), and its use for producing synthesis gas from natural gas through steam reforming, oxygen reforming or steam-oxygen reforming, M1-M2-Ni/M3-M4-ZrO2/⊖-Al2O3 (1) wherein M1 is an alkali metal; each of M2 and M3 is an alkaline earth metal; and M4 is a IIIB element or a lanthanide.Type: GrantFiled: January 5, 2004Date of Patent: October 26, 2004Assignees: Korea Research Institute of Chemical Technology, Korea Gas Corporation, Kyoungdong Citygas Co., Ltd.Inventors: Sang-Eon Park, Ki-Won Jun, Hyun-Seog Roh, Seung-Chan Baek, Young-Sam Oh, Young-Soon Baek, Ri-Sang Choi, Taek-Yong Song
-
Publication number: 20040142817Abstract: The present invention relates to a modified &thgr;-Al2O3-supported nickel reforming catalyst and its use for producing synthesis gas from natural gas, more specifically to a nickel reforming catalyst expressed by the following formula 1, having improved coke resistance, high-temperature catalysis stability and catalytic activity, which is prepared by coating nickel or mixture of nickel and cocatalyst (M1-M2-Ni) on a &thgr;-Al2O3 support modified with metal (M3-M4-ZrO2/&thgr;-Al2O3), and its use for producing synthesis gas from natural gas through steam reforming, oxygen reforming, or steam-oxygen reforming,Type: ApplicationFiled: January 5, 2004Publication date: July 22, 2004Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, KOREA GAS CORPORATION, KYUNGDONG CITYGAS CO., LTD.Inventors: Sang-Eon Park, Ki-Won Jun, Hyun-Seog Roh, Seung-Chan Baek, Young-Sam Oh, Young-Soon Baek, Ri-Sang Choi, Taek-Yong Song
-
Patent number: 6740783Abstract: The present invention relates to a process for preparing dimethyl ether from crude methanol.Type: GrantFiled: April 15, 2003Date of Patent: May 25, 2004Assignee: Korea Research Institute of Chemical TechnologyInventors: Ki-Won Jun, Hyun-Seog Roh, Kew Ho Lee
-
Patent number: 6693060Abstract: A modified &thgr;-Al2O3-supported nickel reforming catalyst and its use for producing synthesis gas from natural gas, more specifically to a nickel reforming catalyst expressed by the following formula 1, having improved coke resistance, high-temperature catalysis stability and catalytic activity, which is prepared by coating nickel or mixture of nickel and cocatalyst (M1—M2—Ni) on a &thgr;-Al2O3 support modified with metal (M3—M4—ZrO2/&thgr;-Al2O3), and its use for producing synthesis gas from natural gas through steam reforming, oxygen reforming or steam-oxygen reforming, M1—M2—Ni/M3—M4—ZrO2/&thgr;-Al2O3 (1) wherein M1 is an alkali metal, each of M2 and M3 is an alkaline earth metal; and M4 is a IIIB element or a lanthanide.Type: GrantFiled: May 13, 2002Date of Patent: February 17, 2004Assignees: Korea Research Institute of Chemical Technology, Korea Gas Corporation, Kyungdong City Gas Co., Ltd.Inventors: Sang-Eon Park, Ki-Won Jun, Hyun-Seog Roh, Seung-Chan Baek, Young-Sam Oh, Young-Soon Baek, Ri-Sang Choi, Taek-Yong Song
-
Publication number: 20040013586Abstract: Disclosed is a plate type steam reformer comprising a plate type burner capable of heating a broad area of a reactor as a heat source, positioned on a bottom of the reformer; a reforming reactor requiring a relatively high temperature, positioned over the burner; a high temperature water gas shift reactor requiring a relatively moderate temperature, positioned over the reforming reactor; a low temperature water gas shift reactor requiring a relatively low temperature, positioned over the high temperature water gas shift reactor; and dividing plates positioned between the above three reactors and between the reforming reactor and the burner such that combustion exhaust gas produced in the burner supplies heat to the above reactors.Type: ApplicationFiled: May 2, 2002Publication date: January 22, 2004Inventors: Young-Sam Oh, Young-Soon Baek, Taek-Yong Song, Sang-Eon Park, Ki-Won Jun, Ri-Sang Choi
-
Publication number: 20030032554Abstract: The present invention relates to a modified &thgr;-Al2O3-supported nickel reforming catalyst and its use for producing synthesis gas from natural gas, more specifically to a nickel reforming catalyst expressed by the following formula 1, having improved coke resistance, high-temperature catalysis stability and catalytic activity, which is prepared by coating nickel or mixture of nickel and cocatalyst (M1—M2—Ni) on a &thgr;m-Al2O3 support modified with metal (M3—M4—ZrO2/&thgr;-Al2O3), and its use for producing synthesis gas from natural gas through steam reforming, oxygen reforming or steam-oxygen reforming,Type: ApplicationFiled: May 13, 2002Publication date: February 13, 2003Applicant: Korea Research Institute Of Chemical TechnologyInventors: Sang-Eon Park, Ki-Won Jun, Hyun-Seog Roh, Seung-Chan Baek, Young-Sam Oh, Young-Soon Baek, Ri-Sang Choi, Taek-Yong Song
-
Publication number: 20020193631Abstract: The present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by liquid-phase oxidation. More particularly, the present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by oxidation in acetic acid as solvent with oxygen-containing gas in the presence of cobalt/manganese/bromine complex catalyst, wherein nickel and carbon dioxide in an appropriate amount are added to increase an activity of cobalt/manganese/bromine complex catalyst. Especially nickel has a synergistic effect with carbon dioxide and maximize the formation of the desired product having the corresponding carboxylic groups to the number of alkyl groups in a reactant.Type: ApplicationFiled: September 28, 2001Publication date: December 19, 2002Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Sang-Eon Park, Jin S. Yoo, Ki-Won Jun, David B. Raju, Young-Ho Kim
-
Patent number: 6476257Abstract: The present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by liquid-phase oxidation. More particularly, the present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by oxidation in acetic acid as solvent with oxygen-containing gas in the presence of cobalt/manganese/bromine complex catalyst, wherein nickel and carbon dioxide in an appropriate amount are added to increase an activity of cobalt/manganese/bromine complex catalyst. Especially nickel has a synergistic effect with carbon dioxide and maximize the to formation of the desired product having the corresponding carboxylic groups to the number of alkyl groups in a reactant.Type: GrantFiled: September 28, 2001Date of Patent: November 5, 2002Assignee: Korea Institute of Chemical TechnologyInventors: Sang-Eon Park, Jin S. Yoo, Ki-Won Jun, David B. Raju, Young-Ho Kim
-
Publication number: 20020152681Abstract: Disclosed is a compact steam reformer which integrally comprises a housing; a reforming reactor having an upper mixing compartment for mixing natural gas and steam and a lower compartment for accommodating a catalyst bed; a natural gas feeding coiled pipe through which natural gas is introduced while being heated; a steam generating coiled pipe in which pure water is converted to steam by the exhaust; a metal fiber burner for heating the reforming reactor; a high-temperature converter for primarily removing carbon monoxide from a synthetic gas; a low-temperature converter for secondarily reducing the carbon monoxide level of the synthetic gas; and a heat exchanger, provided between the high-temperature converter and the low-temperature converter, for cooling the gas effluent from the high-temperature converter. The steam reformer enjoys the advantage of being easy to install in situ and being fabricated at low cost.Type: ApplicationFiled: April 23, 2002Publication date: October 24, 2002Inventors: Young-Sam Oh, Young-Soon Baek, Won-Ihl Cho, Taek-Yong Song, Jeong-Hwan Lee, Sang-Eon Park, Ki-Won Jun, Ri-Sang Choi
-
Patent number: 6248795Abstract: This invention relates to the process of preparing from carbon dioxide a mixture of dimethyl ether and methanol which are useful as clean fuel or raw materials in the chemical industry. More particularly, this invention relates to the process of preparing dimethyl ether and methanol in high yield without by-products such as hydrocarbons by means of chemical conversion of carbon dioxide, which is a major pollutant of the global environment, in the presence of a mixture of catalysts comprising Cu/ZnO-based catalyst and Y-type zeolite catalyst having a strong acidity with the pKa value of −6.0-−3.0.Type: GrantFiled: June 16, 2000Date of Patent: June 19, 2001Assignee: Korea Research Institute of Chemical TechnologyInventors: Ki Won Jun, Kyu Wan Lee