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1.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
发明人： 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分类号： B01J23/835 , B01J23/62 , C07C29/141
摘要： 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：US20180339955A1
公开(公告)日：2018-11-29
申请号：US15991930
申请日：2018-05-29
发明人： 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分类号： C07C29/141 , B01J23/72 , C07C31/26 , C07H3/02
摘要： 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
发明人： Dong Won HWANG , Pravin Pandharinath UPARE , Young Kyu HWANG , In Taek HWANG , Jong San CHANG , Do Young HONG , U Hwang LEE
IPC分类号： 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分类号： 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
摘要： 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：US20220001328A1
公开(公告)日：2022-01-06
申请号：US17281904
申请日：2019-10-25
发明人： Ji Woong YOON , Jong-San CHANG , U Hwang LEE , Young Kyu HWANG , Kyung Ho CHO
摘要： The present invention provides an energy-saving air dryer comprising: a compressor for compressing the air in the atmosphere to form compressed air; a heat exchanger which is disposed on one side of the compressor and recovers compression heat from the compressed air; a pre-filter which is disposed on one side of the heat exchanger and removes pollutants from the compressed air; a pair of adsorption towers which communicate with the pre-filter and are filled with an adsorbent, wherein dry air is formed when compressed air flows into the adsorption towers according to the opening and closing of a valve and moisture is adsorbed, or moisture is desorbed from the adsorbent when dry air retaining the compression heat recovered in the heat exchanger is transferred to the adsorption towers; and an after filter which extends from the one side of the adsorption towers and removes pollutants from the dry air from which moisture has been removed.
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公开(公告)号：US20170101390A1
公开(公告)日：2017-04-13
申请号：US15290647
申请日：2016-10-11
发明人： 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分类号： C07D319/12 , B01D3/00 , B01D39/00 , B01J8/02 , B01D9/00
CPC分类号： C07D319/12 , B01D9/0009 , B01D9/0054 , B01D39/00 , C07B2200/13
摘要： 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：US20220323931A1
公开(公告)日：2022-10-13
申请号：US17641975
申请日：2020-08-28
发明人： Jong-San CHANG , Kyung Ho CHO , U Hwang LEE , Young Kyu HWANG , Ji Woong YOON
摘要： The present invention relates to a metal-organic framework (MOF) having a three-dimensional porous structure and being represented by the chemical formula of [Al8(OH)a(BTC)b(IPA)c(L)d], a preparation method therefor, and a use thereof as an adsorbent and a catalyst.
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公开(公告)号：US20190291075A1
公开(公告)日：2019-09-26
申请号：US16342937
申请日：2017-10-17
发明人： Ji Woong YOON , Jong San CHANG , Young Kyu HWANG , Kyung Ho CHO , U Hwang LEE , Su Kyung LEE , Ji Sun LEE
IPC分类号： B01J20/22 , B01D53/047 , C07C7/12 , B01J20/34
摘要： 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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8.发明申请公开(公告)号：US20180133684A1
公开(公告)日：2018-05-17
申请号：US15575246
申请日：2016-05-18
发明人： Jong San CHANG , U Hwang LEE , Young Kyu HWANG , Christian SERRE , Thomas DEVIC , Amandine CADIAU , Norbert STOCK , Nele REIMER , Michael T. WHARMBY
CPC分类号： B01J20/226 , B01D53/04 , B01D53/261 , B01D2253/204 , B01D2257/704 , B01D2257/80 , B01D2259/40088 , B01J20/28057 , B01J20/28069 , B01J20/3085 , B01J20/3433 , B01J20/3483 , C07F5/069 , H01L51/5259 , H01M10/4235
摘要： 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：US20160304480A1
公开(公告)日：2016-10-20
申请号：US15098905
申请日：2016-04-14
发明人： Dong Won HWANG , Pravin P. UPARE , Jong San CHANG , Young Kyu HWANG , U Hwang LEE , Do Young HONG
IPC分类号： C07D307/42 , C07D307/48 , C07D307/50 , C07D307/36
CPC分类号： C07D307/42 , C07D307/36 , C07D307/48 , C07D307/50
摘要： 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.
摘要翻译： 本发明涉及从生物质制备呋喃衍生物的方法，包括通过使生物质与丁醇中的固体酸催化剂反应制备5-羟甲基糠醛的步骤（1） 和步骤（2）通过使步骤（1）中获得的5-羟甲基糠醛的丁醇溶液与氢化催化剂反应来制备呋喃衍生物。
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