公开(公告)号：US20230321599A1

公开(公告)日：2023-10-12

申请号：US17956206

申请日：2022-09-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Ki LEE ,  Hyun Joo LEE ,  Seojung HAN ,  Heesung EUM ,  Seokhyeon CHEONG

IPC: B01D53/32 ,  B01D53/56 ,  B01D53/75 ,  B01D53/78

CPC classification number: B01D53/56 ,  B01D53/326 ,  B01D53/75 ,  B01D53/78 ,  B01D2257/404

Abstract: Provided is a device for removing nitrogen oxide, the device including an inflow path for gas containing nitrogen oxide; and a reversible metal complex compound coming into contact with the gas containing nitrogen oxide which is introduced through the inflow path, wherein the reversible metal complex compound includes a central metal ion reacting and binding with nitrogen oxide; and a ligand coordinating with the central metal ion, wherein when the central metal ion is oxidized, the bound nitrogen oxide is separated, and the oxidized central metal ion is reduced to recombine with nitrogen oxide.

公开(公告)号：US20230174443A1

公开(公告)日：2023-06-08

申请号：US17945796

申请日：2022-09-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ung LEE ,  Hyun Joo LEE ,  Hong Gon KIM ,  Kyeong Su KIM ,  Jae Hyung IM ,  He Won LEE

IPC: C07C29/48 ,  C01B17/90

CPC classification number: C07C29/48 ,  C01B17/90 ,  C07C2523/42

Abstract: Disclosed is a methanol and sulfuric acid co-production system capable of producing methanol and sulfuric acid in equal equivalents. Specifically, the system includes an oxidation reaction unit configured to produce methyl bisulfate (CH3OSO3H) by reacting methane gas with an acid solution in the presence of a catalyst, a reactive distillation unit disposed downstream of the oxidation reaction unit and configured to esterify methyl bisulfate (CH3OSO3H) supplied from the oxidation reaction unit with trifluoroacetic acid (CF3COOH) to obtain a product and to separate the product into methyl trifluoroacetate (CF3COOCH3) and sulfuric acid (H2SO4) through thermal distillation, and a hydrolysis reaction unit disposed downstream of the reactive distillation unit and configured to produce methanol by hydrolyzing methyl trifluoroacetate (CF3COOCH3) supplied from the reactive distillation unit, in which the reactive distillation unit recirculates the sulfuric acid resulting from separation to the oxidation reaction unit.

公开(公告)号：US20200061596A1

公开(公告)日：2020-02-27

申请号：US16196549

申请日：2018-11-20

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun Joo LEE ,  Jungho Jae ,  Hong Gon Kim ,  Deliana Dahnum ,  Shinhye Cho

IPC: B01J31/18 ,  C07F3/06 ,  C07C269/04 ,  B01J37/03 ,  B01J37/02

Abstract: Disclosed is a zinc-imidazole complex mixed catalyst. Also disclosed are a method for preparing the zinc-imidazole complex mixed catalyst and a method for producing a methyl N-phenyl carbamate in high yield with high selectivity in the presence of the catalyst. The zinc-imidazole complex mixed catalyst can be reused due to its high reaction stability. In addition, the use of the zinc-imidazole complex mixed catalyst leads to a marked improvement in the production yield of a methyl N-phenyl carbamate with high selectivity.

公开(公告)号：US20150239858A1

公开(公告)日：2015-08-27

申请号：US14313153

申请日：2014-06-24

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun Joo LEE ,  Byoung Sung AHN ,  Sang Deuk LEE ,  Jungho JAE ,  Ji Sik CHOI

IPC: C07D301/02 ,  C07D317/36

CPC classification number: C07D301/02 ,  C07D303/14 ,  C07D317/36

Abstract: Disclosed is a method for producing glycidol by successive catalytic reactions. The method includes a series of reactions for the preparation of glycerol carbonate from glycerol and the decarboxylation of the glycerol carbonate. Specifically, the method includes i) reacting glycerol with a dialkyl carbonate to prepare glycerol carbonate, and ii) subjecting the glycerol carbonate to decarboxylation wherein a base is added as a catalyst in step i) and is allowed to react with an acid to form a metal salt after step i), and the salt is used as a catalyst in step ii). According to the method, inexpensive and easy-to-purchase acid and base catalysts can be used to produce glycidol from glycerol, a by-product of biodiesel production, as a starting material in high yield with high selectivity in a convenient, simple, and environmentally friendly way. In addition, the method eliminates the need to separate the base catalyst.

Abstract translation: 公开了通过连续催化反应制备缩水甘油的方法。 该方法包括从甘油制备甘油碳酸酯和碳酸甘油酯脱羧的一系列反应。 具体地说，该方法包括：i）使甘油与碳酸二烷基酯反应以制备甘油碳酸酯，和ii）使甘油碳酸酯脱羧，其中在步骤i）中加入碱作为催化剂，并使其与酸反应形成 步骤i）后的金属盐，并且该盐在步骤ii）中用作催化剂。 根据该方法，可以使用廉价且易于购买的酸和碱催化剂，以生产生物柴油的副产物甘油作为起始原料，以方便，简单和高效的方式以高选择性产生缩水甘油 环保的方式。 此外，该方法不需要分离碱催化剂。

公开(公告)号：US20140294718A1

公开(公告)日：2014-10-02

申请号：US14087373

申请日：2013-11-22

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun Joo LEE ,  Seung Rok LIM ,  Kean Im LEE ,  Chang Soo KIM ,  Hoon Sik KIM ,  Ji Sik CHOI ,  Sang Deuk LEE

IPC: B01D53/14

CPC classification number: B01D53/1493 ,  B01D53/1481 ,  B01D2252/20431 ,  B01D2252/30 ,  B01D2257/302 ,  Y02A50/2349

Abstract: Disclosed is an sorbent for removing sulfur dioxide (SO2) contained in combustion flue gases or in the atmosphere by using a diamine-based ionic liquid or a diamine compound supported by a polymer resin. To be specific, the present invention relates to a method of using a tertiary diamine compound immobilized on a polymer surface as a SO2 sorbent and also relates to a novel sorbent for absorbing or adsorbing a sulfur dioxide hydrate (SO2.H2O) formed by a bond between SO2 and water.

Abstract translation: 公开了一种用于通过使用由聚合物树脂负载的二胺基离子液体或二胺化合物来除去燃烧烟道气或大气中所含的二氧化硫（SO 2）的吸附剂。 具体而言，本发明涉及使用固定在聚合物表面上的叔二胺化合物作为SO 2吸附剂的方法，还涉及用于吸收或吸附由键形成的二氧化硫水合物（SO 2·H 2 O）的新型吸附剂 在二氧化硫和水之间。