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1.发明公开公开(公告)号：US20240317655A1
公开(公告)日：2024-09-26
申请号：US18577771
申请日：2022-06-29
Inventor： Dong Won HWANG , Gwang Nam YUN , In Yong EOM , Marcel Jonathan HIDAJAT
IPC: C07C1/24
CPC classification number: C07C1/24 , C07C2521/04
Abstract: The present invention successively performs hydrodeoxygenation (HDO) and dehydration so that, unlike that of a conventional technique, an alpha-olefin is prepared to have high selectivity, and not an olefin having a double bond at sites other than the alpha position. In addition, according to the present invention, selectivity for alpha-olefin can be further improved under optimal reaction conditions, and an alpha-olefin can be stably prepared with an extended preparation time of up to 180 hours.
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2.发明申请公开(公告)号：US20210346873A1
公开(公告)日：2021-11-11
申请号：US17270252
申请日：2019-07-04
Inventor： Young Kyu HWANG , Do Young HONG , Jaesung KWAK , Pandharinath Pravin UPARE , Dong Won HWANG , Jung Ho LEE , Jong-San CHANG , Joung-mo CHO , U Hwang LEE , Kyung Ho CHO , Su Kyung LEE
IPC: B01J23/835 , B01J23/62 , C07C29/141
Abstract: The present disclosure relates to a catalyst for preparing 1,2-pentanediol from furfural and/or furfuryl alcohol, and more particularly to a catalyst, which is configured such that a catalytically active metal containing both at least one transition metal and tin (Sn) is supported on a basic support and is capable of increasing reaction selectivity for 1,2-pentanediol, and a method of preparing 1,2-pentanediol using the same.
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公开(公告)号：US20210146344A1
公开(公告)日：2021-05-20
申请号：US17097454
申请日：2020-11-13
Inventor： Young Kyu HWANG , Jaesung KWAK , Maeum LEE , Anil Haribhau VALEKAR , Kyung Ryul OH , Do Young HONG , A Reum BYEUN , Dong Won HWANG , Joungmo CHO
Abstract: Proposed is a catalyst complex having high activity for carbon dioxide conversion reaction that converts carbon dioxide to useful compounds through reaction of carbon dioxide and hydrocarbon containing at least one hydroxyl group, and a carbon dioxide conversion process using the same, wherein the catalyst complex includes, as an active metal in the catalyst complex, at least one of noble metals and at least one of transition metals other than noble metals, thereby having high activity for the carbon dioxide conversion reaction.
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公开(公告)号：US20180339955A1
公开(公告)日：2018-11-29
申请号：US15991930
申请日：2018-05-29
Inventor： Dong Won HWANG , Pravin Pandharinath UPARE , Young Kyu HWANG , Do Young HONG , Jong San CHANG , U Hwang LEE , Su Kyung LEE , Kyung Ho CHO
IPC: C07C29/141 , B01J23/72 , C07C31/26 , C07H3/02
Abstract: The present invention relates to a method for preparing mannitol which includes performing the hydrogenation of fructose in the presence of a Cu-based nanocomposite catalyst, for example, a nanocomposite catalyst of CuO(x)/SiO2(100-x) (wherein x is a real number from 20 to 90), using butanol as a solvent.
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公开(公告)号：US20180002769A1
公开(公告)日：2018-01-04
申请号：US15635060
申请日：2017-06-27
Inventor： Dong Won HWANG , Pravin Pandharinath UPARE , Young Kyu HWANG , In Taek HWANG , Jong San CHANG , Do Young HONG , U Hwang LEE
IPC: C13K11/00 , C07D307/50 , B01J37/08 , B01J37/06 , B01J37/03 , B01J27/236 , B01J37/02 , B01J37/00 , B01J29/70 , B01J29/40 , C13K13/00 , B01J37/04
CPC classification number: C13K11/00 , B01J27/236 , B01J29/40 , B01J29/7007 , B01J37/009 , B01J37/0236 , B01J37/031 , B01J37/04 , B01J37/06 , B01J37/08 , C07D307/50 , C07H1/00 , C07H3/02 , C13K3/00 , C13K13/00 , C13K13/002 , C13K13/007
Abstract: The present invention relates to a method for preparing fructose or xylulose from biomass comprising glucose or xylose, and a method for separating a mixture of glucose and fructose and a mixture of xylose and xylulose.
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Patent Agency Ranking
公开(公告)号：US20250059148A1
公开(公告)日：2025-02-20
申请号：US18701820
申请日：2022-10-20
Inventor： Dong Won HWANG , In Yong EOM , Young Kyu HWANG , Ma Eum LEE
IPC: C07D307/48
Abstract: According to the present disclosure, by forming normal pressure conditions in a reaction system through application of a reflux system to an aqueous phase in the presence of sulfuric acid and an inorganic salt in the dehydration reaction of biomass-derived sugar components in an open system, there is no need to include a high-pressure vessel required in a conventional 5-halomethylfurfural production process, there is no risk of safety accidents, including the explosion of a high-pressure vessel and the leakage of strong acid gas, and there is a remarkable effect in that yield is improved three-fold or more compared to the case of using a conventionally used acid catalyst under the normal pressure conditions.
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公开(公告)号：US20250051491A1
公开(公告)日：2025-02-13
申请号：US18710904
申请日：2023-03-27
Inventor： Dong Won HWANG , Changho YOO , Seung Hyeok CHA , Gwang Nam YUN
IPC: C08F4/78 , C08F110/02
Abstract: The present invention pertains to: an ethylene oligomerization catalyst containing a ligand compound; a catalyst composition employing same; and a method for producing an ethylene oligomer by using same. The catalyst exhibits excellent selectivity to oligomers and selectivity to 1-hexane, thus making it possible to mass-produce 1-hexane, which is an industrially useful chemical raw material, with high purity.
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公开(公告)号：US20240059722A1
公开(公告)日：2024-02-22
申请号：US18450131
申请日：2023-08-15
Inventor： Young Kyu HWANG , Chang Ho YOO , Kyung Ryul OH , Dong Won HWANG , Gwang Nam YUN , Mi Jung LEE
CPC classification number: C07F15/0033 , B01J23/468
Abstract: Proposed are a coordination complex compound-ZIF complex and a method of preparing the same. More particularly, proposed are a coordination complex compound-ZIF complex, which is a complex on which a coordination complex compound is supported by being chemically and directly bonded to a metal vacancy site of a ZIF, capable of being usable as a heterogeneous catalyst that can be recovered and reused in subsequent processes and maintaining catalytic functions of the coordination complex compound, which is an active ingredient, and to a method of preparing the same.
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公开(公告)号：US20230076397A1
公开(公告)日：2023-03-09
申请号：US17885006
申请日：2022-08-10
Inventor： Young Kyu HWANG , Changho YOO , Dong Won HWANG , Kyung-Ryul OH , Do Young HONG , Maeum LEE
IPC: C07C51/41
Abstract: Proposed is a high-yield simultaneous conversion method for a hydrogen source and a carbon dioxide source. The method significantly increases a yield of a formate through conversion of carbon dioxide. To this end, a carbon dioxide source and a hydrocarbon containing one or more hydroxy groups undergo a simultaneous conversion reaction in the presence of a solvent containing one or more alcohols and having a pH of 10 to 14.
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公开(公告)号：US20230026024A1
公开(公告)日：2023-01-26
申请号：US17858528
申请日：2022-07-06
Inventor： Young Kyu HWANG , Changho YOO , Dong Won HWANG , Do-Young HONG , Jaedeuk PARK , In Hyoup SONG , Maeum LEE , Kyung-Ryul OH , Anil Haribhau VALEKAR
Abstract: Proposed is a two-pot-two-step simultaneous conversion system for carbon dioxide and a hydrocarbon containing at least one hydroxy group and a method thereof. The system integrates a process of producing a metal salt that is a dehydrogenated form of the hydrocarbon, hydrogen, and water by reacting a hydrocarbon containing at least one hydroxy group in the presence of water and a metal oxalate, and a process of converting carbon dioxide or carbon dioxide-derived carbonate into formate by hydrogenation, thereby increasing energy efficiency while maintaining a higher hydrocarbon conversion rate and a higher carbon dioxide conversion rate than the one-pot conversion system for hydrocarbon and carbon dioxide.
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