-
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.
-
公开(公告)号：US20170037019A1
公开(公告)日：2017-02-09
申请号：US15303510
申请日：2015-04-10
Inventor： Young Lyeol YANG , Byung Sik KIM , Jeong Hyun KIM , Jung Ho LEE , Hyun Kwan SHIN , Ju Nam KIM , Kyung Ho CHO
IPC: C07D307/58 , C07C51/363 , C07C67/317 , C07C51/367 , C07C29/149 , C07D307/33
CPC classification number: C07D307/58 , C07C29/149 , C07C51/363 , C07C51/367 , C07C67/317 , C07D307/32 , C07D307/33 , C07D307/46 , Y02P20/582
Abstract: The present disclosure relates to the preparation of a useful compound, which can be used as an intermediate for preparing an important compound in the industrial field from a homoserine-based compound, and provides a process for treating a homoserine-based compound, capable of mass-producing a useful compound from a homoserine-based compound in a simple manner with excellent efficiency.
Abstract translation: 本发明涉及一种有用的化合物的制备，其可用作在高丝氨酸基化合物中在工业领域中制备重要化合物的中间体，并且提供了一种处理高丝氨酸基化合物的方法，其能够质量 以高效的方式从高丝氨酸基化合物中以简单的方式生产有用的化合物。
-
3.发明申请POLYMER MEMBRANE FOR GAS SEPARATION OR ENRICHMENT COMPRISING HYBRID NANOPOROUS MATERIAL, USES THEREOF, AND A PREPARATION METHOD THEREOF 有权用于气体分离或包覆混合纳米材料的聚合物膜及其制备方法及其制备方法公开(公告)号：US20160158708A1
公开(公告)日：2016-06-09
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.
Abstract translation: 本文公开了用于气体分离或浓缩的聚合物膜，其包含混合纳米多孔材料，其应用及其制造方法。 特别地，混合纳米多孔材料的窗口尺寸为4至15，或者对于待分离气体具有气体吸附特性，这与其它气体不同，因此本发明可提供具有改进气体的聚合物膜 渗透选择性及其制备方法。
-
Patent Agency Ranking
公开(公告)号：US20220323931A1
公开(公告)日：2022-10-13
申请号：US17641975
申请日：2020-08-28
Inventor： Jong-San CHANG , Kyung Ho CHO , U Hwang LEE , Young Kyu HWANG , Ji Woong YOON
Abstract: 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.
-
公开(公告)号：US20190291075A1
公开(公告)日：2019-09-26
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
IPC: B01J20/22 , B01D53/047 , C07C7/12 , B01J20/34
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.
-
公开(公告)号：US20220001328A1
公开(公告)日：2022-01-06
申请号：US17281904
申请日：2019-10-25
Inventor： Ji Woong YOON , Jong-San CHANG , U Hwang LEE , Young Kyu HWANG , Kyung Ho CHO
Abstract: 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.
-
公开(公告)号：US20170101390A1
公开(公告)日：2017-04-13
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 , B01D3/00 , B01D39/00 , B01J8/02 , B01D9/00
CPC classification number: C07D319/12 , B01D9/0009 , B01D9/0054 , B01D39/00 , C07B2200/13
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.
-
8.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.
-
-
-
-
-
-
-
Search Results
8
records
(took 0.016 seconds)
