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41.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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42.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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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：KR100125143B1
公开(公告)日：1997-11-27
申请号：KR1019940032574
申请日：1994-12-02
Applicant: 한국과학기술연구원
CPC classification number: B01J23/26 , B01J23/866 , C07C17/206
Abstract: The catalyst for fluorizing 1,1,1-trifluoro-2,2-dichloroethan consisted of a compound selected from a group comprising of magnesium and calcium, one or more metal element selected from a group comprising of zinc, cerium and nickel, and chrome and the preparing method thereof are disclosed. The mole ratio of chrome to magnesium or calcium is 1:1 to 1:32 and the mole ratio of chrome to metal element is at least 1:0.5. Thereby, the active ingredient of the catalyst is more uniformly distributed, thus the activity and the life of the catalyst are remarkably improved.
Abstract translation: 用于氟化1,1,1-三氟-2,2-二氯乙烷的催化剂由选自镁和钙的组成的化合物，选自锌，铈和镍的一种或多种金属元素和铬 并公开了其制备方法。 铬与镁或钙的摩尔比为1:1至1:32，铬与金属元素的摩尔比至少为1:0.5。 因此，催化剂的活性成分更均匀地分布，催化剂的活性和寿命显着提高。
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公开(公告)号：KR1019970069959A
公开(公告)日：1997-11-07
申请号：KR1019960012394
申请日：1996-04-23
Applicant: 한국과학기술연구원
IPC: C07C19/08
Abstract: 본원발명은 제1단계 반응에서 1,1,1-트리플루오로-2-클로로에탄과 불화수소와 염소를 반응시켜 HFC-134a와 HFC-125를 함께 제조하고, 제2단계 반응에서 제1단계 반응생성물에 트리클로로에틸렌을 첨가하여 HFC-133a를 제조한 다음, 제2단계 반응생성물에서 HFC-134a와 HFC-125 및 염화수소를 분리하고, 그 나머지 혼합물을 상기 제1단계 반응으로 순환시키는 것으로 이루어지는 HFC-134a와 HFC-125를 동시에 제조하는 방법에 관한 것이다.
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Patent Agency Ranking
公开(公告)号：KR1019960008642B1
公开(公告)日：1996-06-28
申请号：KR1019930026521
申请日：1993-12-04
Applicant: 한국과학기술연구원
IPC: C07C19/08
CPC classification number: C07C17/38
Abstract: The fine purification method for 1,1,1,2-tetrafluoroethane(HFC-134a) consists of the steps of; (a) separating the top flux of the distillation tower for HFC-134a; (b) neutralizing and drying; (c) removing hydrogen fluorine(HF); (d) removing water from the bottom flux of the distillation tower by drying. The HFC-134a contains no more than 100 ppm of HF and water respectively.
Abstract translation: 1,1,1,2-四氟乙烷（HFC-134a）的精细净化方法由以下步骤组成： （a）分离用于HFC-134a的蒸馏塔的顶部通量; （b）中和和干燥; （c）除去氢氟（HF）; （d）通过干燥从蒸馏塔的底部助熔剂中除去水分。 HFC-134a分别含有不超过100ppm的HF和水。
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公开(公告)号：KR1019960007518A
公开(公告)日：1996-03-22
申请号：KR1019940020258
申请日：1994-08-17
Applicant: 한국과학기술연구원
IPC: C07C19/08
Abstract: 본 발명은 불화수소(HF)와 트리클로로에틸렌(TCE)을 출발 물질로 하여 중간체인 1-클로로-2,2,2-트리플루오로에탄(HCFC-133a)을 거쳐 1,1,1,2-테트라플루오로에탄(HFC-134a)을 제조하는 방법에 있어서, 반응 원료중 HF의 일부를 HCFC-133a 반응기로 유입전에 HFC-134a 제조 반응 생성물과 접촉시키고, 나머지 HF 및 TCE 원료를 HCFC-133a 제조 반응기에 2개소 이상의 구간으로 분할하여 공급함으로써 반응을 효율적으로 수행하는 방법이 제공된다. 즉, HCFC-133a 제조 반응 전반에 걸쳐 반응기 내부 온도의 변화폭을 좁게 유지시킴으로써 촉매 활성의 제한, 다량의 부산물 생성 및 낮은 수율 등의 문제점이 크게 개선된다.
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