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公开(公告)号：US20220168689A1
公开(公告)日：2022-06-02
申请号：US17672965
申请日：2022-02-16
申请人： Board of Regents, The University of Texas System , Korea Research Institute of Chemical Technology
IPC分类号： B01D53/26 , B01D53/04 , B01D53/047 , B01J20/22 , B01J20/28
摘要： Embodiments of the present disclosure pertain to methods of sorption of H2O from an environment by associating the environment with a porous material such that the association results in the sorption of H2O to the porous material. The porous material includes a (M)-2,4-pyridinedicarboxylic acid coordination polymer, where M is a divalent metal ion selected from the group consisting of Mn, Fe, Co, Ni, Mg, and combinations thereof. The coordination polymer has a one-dimensional pore structure and shows reversible soft-crystal behavior. The porous material may be a Mg(II) 2,4-pyridinedicarboxylic acid coordination polymer (i.e., Mg-CUK-1). The methods of the present disclosure may also include one or more steps of releasing the sorbed H2O from the porous material and reusing the porous material after the releasing step for sorption of additional H2O from the environment.
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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
发明人： Young Kyu Hwang , Jong San Chang , Do Young Hong , Dong Won Hwang , U Hwang Lee , Kyung Ho Cho , Anil Haribhau Valekar , Su Kyung Lee
摘要： 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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公开(公告)号：US09988362B2
公开(公告)日：2018-06-05
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 , C07D307/36 , C07D307/48 , C07D307/50
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.
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公开(公告)号：US09687772B2
公开(公告)日：2017-06-27
申请号：US14866345
申请日：2015-09-25
发明人： Jong-San Chang , Young Kyu Hwang , Ji Woong Yoon , Do-Young Hong , U-Hwang Lee , Sukyung Lee , Kyung Ho Cho , Dong Won Hwang , Youn-Sang Bae , Seung-Joon Lee
IPC分类号： B01D53/04 , B01J20/22 , B01J20/28 , C01B23/00 , C01B21/04 , C01B13/02 , C10L3/10 , B01D53/22 , B01D53/047 , B01D53/02
CPC分类号： B01D53/0462 , B01D53/02 , B01D53/047 , B01D53/22 , B01D53/228 , B01D2053/224 , B01D2253/10 , B01D2253/1122 , B01D2253/20 , B01D2253/204 , B01D2253/308 , B01D2256/245 , B01D2257/102 , B01J20/223 , B01J20/28033 , C01B13/0262 , C01B21/0455 , C01B23/0057 , C01B2210/0015 , C01B2210/0046 , C01B2210/007 , C10L3/105
摘要： The present invention relates to a nitrogen adsorbent having nitrogen selective adsorptivity by including an organic-inorganic hybrid nanoporous material having a coordinatively unsaturated metal site with density of 0.2 mmol/g to 10 mmol/g in a skeleton, surface or pore; and use thereof, such as a device separating nitrogen from a gas mixture containing nitrogen and methane, a pressure swing adsorption separation device and a temperature swing adsorption separation device for separating nitrogen provided, a method for separating nitrogen and methane from a gas mixture containing nitrogen and methane, a device for separating nitrogen, oxygen or argon, a method for separating nitrogen, oxygen or argon from a gas mixture containing nitrogen, oxygen or argon, and a method for preparing nitrogen or high purity inert gas all separated from a gas mixture containing nitrogen and inert gas.
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公开(公告)号：US09561492B2
公开(公告)日：2017-02-07
申请号：US14869138
申请日：2015-09-29
IPC分类号： C07D319/00 , B01J23/14 , C07D319/10 , C07D319/12 , B01J21/04 , B01J21/06 , B01J21/08 , B01J35/00 , C01G19/02 , B01J37/03 , B01J29/03 , B01J29/40 , B01J29/70
CPC分类号： B01J23/14 , B01J21/04 , B01J21/063 , B01J21/066 , B01J21/08 , B01J29/0308 , B01J29/405 , B01J29/7057 , B01J35/0006 , B01J35/002 , B01J37/031 , B01J37/035 , C01G19/02 , C07D319/10 , C07D319/12
摘要： The present invention provides a method for directly producing lactide by subjecting lactic acid to a dehydration reaction in the presence of a catalyst comprising a tin compound, preferably, a tin (IV) compound, wherein lactide can be produced directly or by one step from lactic acid, without going through the step of producing or separating lactic acid oligomer. The method of the present invention has advantages of causing no loss of lactic acid, having a high conversion ratio to lactic acid and a high selectivity to optically pure lactide, and maintaining a long life time of the catalyst. Further, since lactic acid oligomer is not or hardly generated and the selectivity of meso-lactide is low, the method also has an advantage that the cost for removing or purifying this can be saved.
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6.发明授权Method for producing lactide directly from lactic acid and a catalyst used therein 有权直接由乳酸生产丙交酯的方法及其中使用的催化剂公开(公告)号：US09539561B2
公开(公告)日：2017-01-10
申请号：US14422526
申请日：2013-04-24
IPC分类号： C07D319/00 , B01J23/14 , C07D319/10 , C07D319/12 , B01J21/04 , B01J21/06 , B01J21/08 , B01J35/00 , C01G19/02 , B01J37/03 , B01J29/03 , B01J29/40 , B01J29/70
CPC分类号： B01J23/14 , B01J21/04 , B01J21/063 , B01J21/066 , B01J21/08 , B01J29/0308 , B01J29/405 , B01J29/7057 , B01J35/0006 , B01J35/002 , B01J37/031 , B01J37/035 , C01G19/02 , C07D319/10 , C07D319/12
摘要： The present invention provides a method for directly producing lactide by subjecting lactic acid to a dehydration reaction in the presence of a catalyst comprising a tin compound, preferably, a tin (IV) compound, wherein lactide can be produced directly or by one step from lactic acid, without going through the step of producing or separating lactic acid oligomer. The method of the present invention has advantages of causing no loss of lactic acid, having a high conversion ratio to lactic acid and a high selectivity to optically pure lactide, and maintaining a long life time of the catalyst. Further, since lactic acid oligomer is not or hardly generated and the selectivity of meso-lactide is low, the method also has an advantage that the cost for removing or purifying this can be saved.
摘要翻译： 本发明提供一种在含有锡化合物，优选锡（IV）化合物的催化剂存在下使乳酸进行脱水反应直接生产丙交酯的方法，其中丙交酯可直接或通过一步从乳酸 酸，而不经过生产或分离乳酸低聚物的步骤。 本发明的方法具有不会损失乳酸，乳酸转化率高，对光学纯丙交酯具有高选择性，并保持催化剂寿命长的优点。 此外，由于乳酸低聚物不是或几乎不产生，内消旋 - 丙交酯的选择性低，所以该方法还具有可以节省除去或纯化成本的优点。
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7.发明授权公开(公告)号：US11801496B2
公开(公告)日：2023-10-31
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
CPC分类号： B01J23/835 , B01J23/622 , 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：US11597709B2
公开(公告)日：2023-03-07
申请号：US17167886
申请日：2021-02-04
IPC分类号： C07D307/50 , B01J31/02
摘要： The present disclosure provides a preparing method for 5-alkoxymethylfurfural, including steps of (a) preparing fructose, (b) mixing the fructose, an organic acid catalyst, and an organic solvent, thereby preparing mixing solution, and (c) heating the mixing solution, thereby preparing 5-alkoxymethylfurfural.
Therefore, 5-alkoxymethylfurfural may be effectively prepared without by-products from fructose.-
公开(公告)号：US10253012B2
公开(公告)日：2019-04-09
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 , B01D9/00 , B01D39/00
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：US10227668B2
公开(公告)日：2019-03-12
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： 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
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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