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公开(公告)号：US11285455B2
公开(公告)日：2022-03-29
申请号：US16342937
申请日：2017-10-17
Inventor： Ji Woong Yoon , Jong San Chang , Young Kyu Hwang , Kyung Ho Cho , U Hwang Lee , Su Kyung Lee , Ji Sun Lee
Abstract: The present invention relates to an organic-inorganic hybrid nanoporous material, maintaining a nanoporous skeleton structure formed by coordination of an organic ligand containing an aromatic compound to a trivalent central metal ion, and further having an intramolecular acid anhydride functional group modified on the aromatic compound of the nanoporous skeleton structure, and thereby exhibits selectivity for olefins, and an adsorbent comprising the same. Specifically, the organic-inorganic hybrid nanoporous material of the present invention exhibits an excellent olefin-selective adsorption capacity through differences in adsorption equilibrium and adsorption rate, and thus can be usefully employed in the separation of C2-C4 hydrocarbons. Further, the olefins adsorbed to the organic-inorganic hybrid nanoporous material can be desorbed by purging of an inert gas which is not liquefied by way of mild vacuum conditions or compression, and thus, the organic-inorganic hybrid nanoporous material can be used to prepare olefins by separating C2-C4 hydrocarbon mixtures.
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公开(公告)号：US10138185B1
公开(公告)日：2018-11-27
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 , C07C31/26 , C07H3/02 , B01J23/72
CPC classification number: 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：US11224856B2
公开(公告)日：2022-01-18
申请号：US15575246
申请日：2016-05-18
Inventor： Jong San Chang , U Hwang Lee , Young Kyu Hwang , Christian Serre , Thomas Devic , Amandine Cadiau , Norbert Stock , Nele Reimer , Michael T. Wharmby
IPC: B01J20/22 , B01J20/30 , B01J20/34 , H01M10/42 , B01D53/26 , B01D53/04 , B01J20/28 , C07F5/06 , H01L51/52
Abstract: Provided are a water and/or alcohol adsorbent including organic-inorganic hybrid nanoporous materials, and use thereof, and more particularly, a water and/or alcohol adsorbent having a high adsorption amount at a low relative humidity or partial pressure, of which desorption/regeneration is possible at a low temperature, the water and/or alcohol adsorbent including organic-inorganic hybrid nanoporous materials having 0.5 to 3 mol of a hydroxyl group (OH) or a hydroxide anion group (OH−) per 1 mol of a central metal ion, and use thereof.
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公开(公告)号：US10195592B2
公开(公告)日：2019-02-05
申请号：US15584933
申请日：2017-05-02
Inventor： Young Kyu Hwang , Jong San Chang , Do Young Hong , Dong Won Hwang , U Hwang Lee , Kyung Ho Cho , Anil Haribhau Valekar , Su Kyung Lee
Abstract: The present invention relates to a catalyst for transfer hydrogenation, which is formed of a metal-organic framework having an MOF-808 based X-ray diffraction pattern.A high crystalline porous MOF-808 based metal-organic framework exhibits excellent performance in the transfer hydrogenation of ethyl levulinate (EL) at high and low temperature.
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Patent Agency Ranking
公开(公告)号：US09988362B2
公开(公告)日：2018-06-05
申请号：US15098905
申请日：2016-04-14
Inventor： Dong Won Hwang , Pravin P. Upare , Jong San Chang , Young Kyu Hwang , U Hwang Lee , Do Young Hong
IPC: C07D307/42 , C07D307/36 , C07D307/48 , C07D307/50
CPC classification number: C07D307/42 , C07D307/36 , C07D307/48 , C07D307/50
Abstract: The present invention relates to a method for preparing for a furan derivative from biomass, comprising step (1) of preparing 5-hydroxymethylfurfural by reacting biomass and a solid acid catalyst in butanol; and step (2) of preparing a furan derivative by reacting the butanol solution of 5-hydroxymethylfurfural, obtained in step (1), with a hydrogenation catalyst.
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公开(公告)号：US10253012B2
公开(公告)日：2019-04-09
申请号：US15290647
申请日：2016-10-11
Inventor： Dong Won Hwang , Jong San Chang , Young Kyu Hwang , U Hwang Lee , Do Young Hong , Su Kyung Lee , Kyung Ho Cho , Pravin Pandharinath Upare
IPC: C07D319/12 , B01D9/00 , B01D39/00
Abstract: The present invention relates to a method and apparatus for preparation of lactide using a lactide purification process, comprising introducing an aqueous solution comprising lactic acid into a reactor filled with a catalyst and reacting the same to produce crude lactide vapor; and purifying the crude lactide vapor to produce lactide crystals, wherein a first purification comprises collecting and crystallizing the crude lactide vapor using a first solvent to produce lactide crystals, and separating the lactide crystal from a residue through filtration.
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公开(公告)号：US10227668B2
公开(公告)日：2019-03-12
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: C13K1/10 , C13K11/00 , C13K13/00 , C13K3/00 , B01J27/236 , B01J29/40 , B01J29/70 , B01J37/00 , B01J37/02 , B01J37/03 , B01J37/04 , B01J37/06 , B01J37/08 , C07D307/50 , C07H1/00 , C07H3/02
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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公开(公告)号：US09861932B2
公开(公告)日：2018-01-09
申请号：US14959152
申请日：2015-12-04
Inventor： U-Hwang Lee , Jong San Chang , Young Kyu Hwang , You In Park , Hye Rim Song , Seung Eun Nam , Do Young Hong , Sue Kyung Lee , Kyung Ho Cho
CPC classification number: B01D53/22 , B01D53/228 , B01D67/0079 , B01D69/02 , B01D69/148 , B01D2053/221 , B01D2256/10 , B01D2256/12 , B01D2256/16 , B01D2256/22 , B01D2256/245 , B01D2257/102 , B01D2257/104 , B01D2257/108 , B01D2257/2047 , B01D2257/30 , B01D2257/504 , B01J20/226 , B01J20/262 , B01J20/28033 , Y02C10/10
Abstract: Disclosed herein is polymer membrane for gas separation or concentration which contains a hybrid nanoporous material, an application thereof, and a manufacturing method thereof.Especially, the hybrid nanoporous material has a window size of 4 Å to 15 Å or has gas adsorption characteristics for a gas to be separated, which is different from those for other gases, and thus the present invention may provide the polymer membrane having improved gas permeation selectivity, an application thereof, and a manufacturing method thereof.
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公开(公告)号：US20170320790A1
公开(公告)日：2017-11-09
申请号：US15584933
申请日：2017-05-02
Inventor： Young Kyu Hwang , Jong San Chang , Do Young Hong , Dong Won Hwang , U Hwang Lee , Kyung Ho Cho , Anil Haribhau Valekar , Su Kyung Lee
CPC classification number: B01J27/20 , B01J31/26 , B01J35/002 , B01J35/1023 , B01J35/1028 , B01J35/1047 , B01J37/036 , B01J37/06
Abstract: The present invention relates to a catalyst for transfer hydrogenation, which is formed of a metal-organic framework having an MOF-808 based X-ray diffraction pattern.A high crystalline porous MOF-808 based metal-organic framework exhibits excellent performance in the transfer hydrogenation of ethyl levulinate (EL) at high and low temperature.
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