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公开(公告)号：KR1020020045235A
公开(公告)日：2002-06-19
申请号：KR1020000074615
申请日：2000-12-08
Applicant: 한국과학기술연구원
Abstract: PURPOSE: Provided is a palladium catalyst which is used in a dehydrochlorination reaction such as changing HCFC to HFC. Presented also are the catalyst and the reaction conditions that bring about the high yield at low temperature and maintain the activity and the selectivity for a long period of time. CONSTITUTION: The preparation method of the catalyst and reaction method comprise: continuously treating activated carbon with aqueous solutions of HF and HCl and dipping palladium into it; reducing the above catalyst with hydrogen at 200-300°C before the dehydrochlorination reaction; and making 1,1-difluoroethane from 1,1-difluoro-1-chloroethane using the above catalyst(Pd/C) by dehydrochlorination reaction at 240-300°C and feeding 1,1-difluoro-1-chloroethane and hydrogen gas in a ratio of 2-6.
Abstract translation: 目的：提供一种钯催化剂，其用于脱氯化氢反应，例如将HCFC改为HFC。 还提出了在低温下产生高产率并长期维持活性和选择性的催化剂和反应条件。 构成：催化剂的制备方法和反应方法包括：用HF和HCl水溶液连续处理活性炭，并将钯浸入其中; 在脱氯化氢反应前，在200-300℃用氢还原上述催化剂; 并使用上述催化剂（Pd / C），在240-300℃下通过脱氯化氢反应从1,1-二氟-1-氯乙烷制备1,1-二氟乙烷，并加入1,1-二氟-1-氯乙烷和氢气 比例为2-6。
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公开(公告)号：KR100340186B1
公开(公告)日：2002-06-12
申请号：KR1019990049666
申请日：1999-11-10
Applicant: 한국과학기술연구원
IPC: C09K5/04
CPC classification number: C09K5/045 , C09K2205/112 , C09K2205/12 , C09K2205/22 , C09K2205/43
Abstract: 제 1 성분으로디플루오로메탄, 제 2 성분으로펜타플루오로에탄, 제 3 성분으로 1,1,1-트리플루오로에탄을포함하고, 제 4 성분으로사이클로프로판, 1,1,1,2,3,3,3-헵타플루오로프로판, 1,1,1,2,2-펜타플루오로프로판, 이소부탄, 옥타플루오로사이클로부탄, 1,1,1,2,3,3-헥사플루오로프로판, 부탄, 비스(디플루오로메틸)에테르및 펜타플루오로에틸메틸에테르로이루어진군 중에서선택된어느한 성분을포함하는 HCFC-22 대체용새로운냉매혼합물을제공한다.
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公开(公告)号：KR100335601B1
公开(公告)日：2002-05-08
申请号：KR1020000007028
申请日：2000-02-15
Applicant: 한국과학기술연구원
IPC: C23F1/46
Abstract: 본 발명은, 폐염화철 수용액을 재생하기 위해 환원시키는 방법에 있어서 철재를 충진한 컬럼 반응기를 사용하면서도 적정한 환원율을 유지하고, 연속 운전이 가능하도록 하기 위하여, 폐염화철 수용액이 도입되는 철재가 충진된 컬럼 반응기 (1)와, 상기 컬럼 반응기로부터 배출되는 염화철수용액이 도입되고, 레벨지시조절계 (LIC)와 산화환원전위지시조절계 (AIC)를 포함하는 교반 반응기 (2)와, 상기 교반 반응기의 염화철 수용액을 상기 컬럼 반응기로 순환시키기 위한 순환 펌프 (3)로 이루어지고, 상기 레벨지시조절계 (LIC)는 상기 교반 반응기내의 염화철 수용액 높이를 측정하여 상기 컬럼 반응기로 도입되는 폐염화철 수용액의 유량을 제어하고, 상기 산화환원전위지시조절계 (AIC)는 상기 교반 반응기내의 염화철 수용액의 산화환원전위를 측정하여 � ��기 교반 반응기로부터 배출되는 염화철 수용액의 유량을 제어하는 염화철 수용액의 연속 환원 장치를 제공한다.
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54.发明公开
公开(公告)号：KR1020010046069A
公开(公告)日：2001-06-05
申请号：KR1019990049666
申请日：1999-11-10
Applicant: 한국과학기술연구원
IPC: C09K5/04
CPC classification number: C09K5/045 , C09K2205/112 , C09K2205/12 , C09K2205/22 , C09K2205/43
Abstract: PURPOSE: A refrigerant mixture containing difluoromethane, pentafluoroethane, 1,1,1-trifluoroethane is provided to substitute HCFC-22(chlorodifluoromethane, CHClF2) without worry of use restraint as being no risk of ozone layer destruction. CONSTITUTION: The refrigerant mixture comprises difluoromethane(CH2F2, HFC-32) as first component; pentafluoroethane(CHF2CF3, HFC-125) as second component; 1,1,1-trifluoro ethane(CH3CF3, HFC-143a) as third component; one component selected from cyclopropane(C3H6, RC-270), 1,1,1,2,3,3,3-heptafluoropropane(CF3CHFCF3, HFC-227ea), 1,1,1,2,2-pentafluoropropane(CH3CF2CF3, HFC-245cb), isobutane(CH(CH3)2CH3, R-600a), octafluorocyclobutane(C4F8, RC-318), 1,1,1,2,3,3-hexafluoropropane(CHF2CHFCF3, HFC- 236ea), butane(C4H10, R-600), bis(difluoromethyl)ether(CHF2OCHF2, HFE-134), penta fluoroethylmethylether(CF3CF2OCH3, HFE-245).
Abstract translation: 目的：提供含有二氟甲烷，五氟乙烷，1,1,1-三氟乙烷的制冷剂混合物，代替HCFC-22（氯二氟甲烷，CHClF2），不用担心使用限制，因为没有臭氧层破坏的风险。 构成：制冷剂混合物包含作为第一成分的二氟甲烷（CH 2 F 2，HFC-32） 五氟乙烷（CHF 2 CF 3，HFC-125）作为第二成分; 作为第三成分的1,1,1-三氟乙烷（CH 3 CF 3，HFC-143a） 选自环丙烷（C 3 H 6，RC-270），1,1,1,2,3,3,3-七氟丙烷（CF 3 CHFCF 3，HFC-227ea），1,1,1,2,2-五氟丙烷（CH 3 CF 2 CF 3， HFC-245cb），异丁烷（CH（CH3）2CH3，R-600a），八氟环丁烷（C4F8，RC-318），1,1,1,2,3,3-六氟丙烷（CHF2CHFCF3，HFC-236ea），丁烷 C4H10，R-600），双（二氟甲基）醚（CHF2OCHF2，HFE-134），五氟乙基甲基醚（CF 3 CF 2 OCH 3，HFE-245）。
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55.发明公开
公开(公告)号：KR1020010017372A
公开(公告)日：2001-03-05
申请号：KR1019990032851
申请日：1999-08-11
Applicant: 한국과학기술연구원
IPC: B01J23/44
CPC classification number: B01J23/44 , B01J37/0009 , B01J37/02 , C07C17/23 , C07C21/00
Abstract: PURPOSE: Disclosed are a palladium catalyst supported on active carbon, a preparation method thereof and a hydrogenation reaction of chlorofluorocarbon to hydrofluorocarbon using the prepared catalyst. CONSTITUTION: The active carbon used as catalyst support is pretreated with a basic solution of 0.2-1M NaOH at 60-80deg.C for 1-5hours two or five times. And the acid treatment of a hydrochloric acid may be also conducted whenever after the base treatment or the hydrogen fluorine treatment or before loading of palladium species. The palladium species is impregnated by the adsorption precipitation method or the co-precipitation method. The hydrogenation reaction, dehalogenation, of chlorofluorocarbon to hydrofluorocarbon is selectively preformed to increase the yield of HFC-32.
Abstract translation: 目的：公开了使用制备的催化剂负载在活性炭上的钯催化剂，其制备方法和氯氟烃与氢氟烃的氢化反应。 构成：将用作催化剂载体的活性炭用0.2-1M NaOH的碱性溶液在60-80℃预处理1-5小时两次或五次。 每当碱处理或氢氟处理之后或钯物质负载之前，盐酸的酸处理也可以进行。 通过吸附沉淀法或共沉淀法浸渍钯物质。 选择性地进行氯氟烃与氢氟烃的氢化反应脱卤，以提高HFC-32的产率。
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Patent Agency Ranking
公开(公告)号：KR1020010009404A
公开(公告)日：2001-02-05
申请号：KR1019990027756
申请日：1999-07-09
Applicant: 한국과학기술연구원
IPC: C07C19/08
Abstract: PURPOSE: A new method for supplying hydrogen fluoride capable of resolving the attachment of a reaction catalyst on a wall surface by installing a draft tube and a plurality of distribution tubes and dip pipes on a reactor for synthesizing CFC or HCFC is provided, which has the advantage of resolving corrosive problems as fatal problems generate in a ring sparger. CONSTITUTION: In a method for supplying hydrogen fluoride in a liquid reaction for synthesizing chlorofluorocarbon or hydrochlorofluorocarbon using antimony fluoride chloride as a catalyst, the method comprises the steps of: installing a plurality of distribution tubes (8) at the outside of a reactor; installing a draft tube (11) connected to the distribution tubes in the reactor and providing a circulation path of a plurality of dip pipes (9) and reactor contents disposed in the vicinity of an inner wall of the reactor; and supplying hydrogen fluoride to the vicinity of the inner wall of the reactor through the distribution tubes and the draft tube, wherein a number of the distribution tubes and draft tube are 3 to 20 and an outside diameter of the distribution tubes is 20 to 95% of an inside diameter of the reactor.
Abstract translation: 目的：提供一种能够通过在用于合成CFC或HCFC的反应器上安装引流管和多个分配管和浸液管来分解反应催化剂在壁表面上的附着的新方法，其具有 在环形喷雾器中产生的致命问题，解决腐蚀性问题的优点。 构成：在使用氯化锑作为催化剂合成氯氟烃或氢氯氟烃的液体反应中的氟化氢的供给方法中，该方法包括以下步骤：在反应器外部安装多个分配管（8） 安装连接到反应器中的分配管的引流管（11），并提供设置在反应器内壁附近的多个浸渍管（9）和反应器内容物的循环路径; 并通过分配管和引流管向反应器内壁附近供给氟化氢，其中多个分配管和引流管为3〜20，分配管的外径为20〜95％ 的反应器的内径。
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公开(公告)号：KR100239680B1
公开(公告)日：2000-02-01
申请号：KR1019970051416
申请日：1997-10-07
Applicant: 한국과학기술연구원
IPC: C07C211/18
CPC classification number: C07C209/72 , C07C211/36
Abstract: 루테늄 촉매와 금속 아질산염의 존재 하에 유기 용매 중에서, 방향족 디아민을 수소화 반응시켜 시클로 지방족 디아민 화합물을 제조하는 방법으로서, 종래 기술에 비해 반응 시간이 단축되고 그 수율이 향상되는 효과가 있다.
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公开(公告)号：KR1019980083668A
公开(公告)日：1998-12-05
申请号：KR1019970019045
申请日：1997-05-16
Applicant: 한국과학기술연구원
IPC: C07C19/08
Abstract: 펜타플루오로에탄 제조시 반응 생성물에 포함된 클로로펜타플루오로에탄과 염화수소가 저비점의 공비 혼합물을 형성하는 특성을 이용하여 이 공비 혼합물을 증류탑의 탑정으로 배출하고, 펜타플루오로에탄을 탑저로 회수하며, 증류탑의 탑정에서 배출된 클로로펜타플루오로에탄은 수소화 반응시켜 펜타플루오로에탄으로 전환시키고, 미반응된 클로로펜타플루오로에탄은 수소화 반응의 부생물인 염화수소와 함께 증류탑으로 순환시켜 탑정으로 재분리함으로써 펜타플루오로에탄을 효율적으로 제조하는 방법이 제공된다.
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公开(公告)号：KR1019960016683B1
公开(公告)日：1996-12-20
申请号：KR1019930027091
申请日：1993-12-09
Applicant: 한국과학기술연구원
IPC: B01J37/24
CPC classification number: B01J37/26 , B01J27/12 , B01J27/132 , B01J27/138 , C07C17/206 , C07C19/08
Abstract: A mixture of chrom oxide hydride and magnesium or calcium chloride in the ratio of 1 : 0.3 and 1 : 10 is mixed in a metal salt solution, and reacted with hydrogen fluoride solution, followed by, curing the obtained paste mixture. The ratio of chrom and magnesium or calcium is between 1 : 1 and 1 : 4, and the metal salt is selected from cerium chloride, zinc chloride, nickel chloride and aluminium chloride.
Abstract translation: 以1：0.3和1:10比例的铬氢化物和镁或氯化钙的混合物在金属盐溶液中混合，与氟化氢溶液反应，然后固化所得的糊状混合物。 铬和镁或钙的比例在1:1至1:4之间，金属盐选自氯化铈，氯化锌，氯化镍和氯化铝。
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