-
公开(公告)号：KR100125120B1
公开(公告)日：1997-12-01
申请号：KR1019940015934
申请日：1994-07-04
Applicant: 한국과학기술연구원
IPC: C07C17/02
CPC classification number: C07C17/206 , C07C17/21 , Y02P20/582
Abstract: A process for producing HFC compounds serially is characterized by a reaction system consisting two or more heterogeneous catalyst reactors, which are connected each other, so each reactor can use a different catalyst or a different temperature, and products of a reactor can be used as reactants of the next reactor. Said process consists of supplying two or more different halogenated carbon or halogenated hydrocarbon compounds with HF to the first reactor to produce different HFC compounds, followed by supplying said compounds to the next reactors.
Abstract translation: 连续生产HFC化合物的方法的特征在于由两个或更多个非均相催化剂反应器组成的反应体系，它们彼此连接，因此每个反应器可以使用不同的催化剂或不同的温度，反应器的产物可以用作反应物 的下一个反应堆。 所述方法包括向第一反应器提供两种或多种不同的卤化碳或卤代烃化合物与HF，以产生不同的HFC化合物，然后将所述化合物供应到下一个反应器。
-
-
公开(公告)号：KR1019960008616B1
公开(公告)日：1996-06-28
申请号：KR1019930018048
申请日：1993-09-08
Applicant: 한국과학기술연구원
IPC: C01B7/04
Abstract: The catalyst for manufacturing chlorine is made by; (a) mixing the aqueous solution of CrO3 of 6 anions with ethanol; (b) heating and refluxing at above 90 deg.C; (c) calcinating at 400-500 deg.C for 3-10 hrs after seperating and drying the precipitate;(d) molding with 3-10 wt% stearic acid dissolved in chloroform added. Chlorine is prepared by reacting HCl and oxygen at the molar ratio of 4:1-4:4 at 350-375 deg.C under the catalyst Cr2O3.
Abstract translation: 氯制造催化剂由 （a）将6种阴离子的CrO 3的水溶液与乙醇混合; （b）在90℃以上加热回流; （c）在分离和干燥沉淀物之后，在400-500℃下煅烧3-10小时;（d）用溶于氯仿中的3-10重量％的硬脂酸成型。 在催化剂Cr2O3的350-375℃下，以4：1-4：4的摩尔比使HCl和氧气反应制备氯。
-
公开(公告)号：KR1019960005492B1
公开(公告)日：1996-04-25
申请号：KR1019920023183
申请日：1992-12-03
Applicant: 한국과학기술연구원
IPC: B01J23/36
Abstract: Cr(NO2)39H2O or (NH4)2Cr2O7 is heated up from ambient temp. to 350-500 deg.C in 30 minutes to 4 hours. And then at 450-500 deg.C calcination temp. is kept for 30 minutes to 7 hours to prepare Cr2O3 catalyst for chlorine production. This is a direct calcination method without chromate dissolution, reaction, precipitation, filtration, washing and drying.
Abstract translation: Cr（NO2）39H2O或（NH4）2Cr2O7从环境温度加热。 在30分钟至4小时内至350-500摄氏度。 然后在450-500℃煅烧温度。 保持30分钟至7小时以制备用于氯生产的Cr 2 O 3催化剂。 这是一种没有铬酸盐溶解，反应，沉淀，过滤，洗涤和干燥的直接煅烧方法。
-
-
Patent Agency Ranking
公开(公告)号：KR1019950014215B1
公开(公告)日：1995-11-23
申请号：KR1019920005965
申请日：1992-04-10
Applicant: 한국과학기술연구원
IPC: C07C19/08
Abstract: 1,1,1,2-Tetrafluoroethane is prepared by reacting 1,1,1-trifluoro-2-chloroethane and hydrogen fluoride in a mole ratio of 1:3-1:10 at 350-450 deg.C for 30-60 secs in the presence of Cr2O3 catalyst, which is pretreated with hydrogen fluoride at 200-450 deg.C for 1-10 hrs before the reaction. Preparation of Cr2O3 catalyst having a surface area of 60-90 m2/g comprises (A) adding slowly ammonium hydroxide solution to the aqueous solution of KCr(SO4)212H2O until the pH of the solution reaches 8.8-9.0 to form chromium hydroxide precipitate, followed by filtering and water washing ; (B) heating the precipitate at 100-500 deg.C into chromium oxide (Cr2O3) ; (C) mixing Cr2O3 with ammonium chromate or ammonium dichromate, followed by vacuum drying at 60-70 deg.C ; and (D) heating the mixture at 550 deg.C to decompose carried ammonium chromate or dichromate.
Abstract translation: 1,1,1,2-四氟乙烷通过1,1,1-三氟-2-氯乙烷和氟化氢的摩尔比为1：3-1：10在350-450℃下反应制备，为30-60 在Cr 2 O 3催化剂存在下，在反应前1-10小时用氟化氢在200-450℃下预处理。 表面积为60〜90m2 / g的Cr2O3催化剂的制备包括：（A）缓慢加入氢氧化铵溶液至KCr（SO4）212H2O水溶液，直到溶液的pH达到8.8-9.0，形成氢氧化铬沉淀， 然后过滤和水洗; （B）将100-500℃的沉淀物加热成氧化铬（Cr2O3）; （C）将Cr2O3与铬酸铵或重铬酸铵混合，然后在60-70℃真空干燥; 和（D）在550℃下加热混合物以分解携带的铬酸铵或重铬酸铵。
-
-
公开(公告)号：KR1019950002850A
公开(公告)日：1995-02-16
申请号：KR1019930014456
申请日：1993-07-28
Applicant: 한국과학기술연구원
IPC: B01J23/26
Abstract: 본 발명은 1,1,1,2-테트라플루오로에탄 재조용 촉매 및 그것을 제조하는 방법에 관한 것이다. 더욱 자세하게는 CrO
3 와 C
2 H
5 OH로부터 제조된 CR(OH)
3 ·xH
2 O를 HF수용액과 반응시킨 후 소성하는 것을 특징으로 하는, F의 함량이 20~50중량%인 1,1,1,2-테트라플루오로에탄 제조용 촉매 및 그것의 제조방법에 관한 것이다.-
公开(公告)号：KR1019940002205A
公开(公告)日：1994-02-16
申请号：KR1019920012605
申请日：1992-07-15
Applicant: 한국과학기술연구원
IPC: C07C19/08
Abstract: 본 발명은 1,1,1-트리클로로에탄과 불화수소를 무촉매 반응시켜 1,1-디클로로플루오로에탄(HCFC 141b)과 1-클로로-1,1-디플루오로에탄(HCFC 142b)를 제조함에 있어서, 전환율이 높고 반응생성물인 HCFC 141b및 HCFC 142b의 선택성을 높여줄 수 있는 HCFC-141b 및 HCFC-142b의 제조방법에 관한 것이다.
본 발명은 불화수소와 1,1,1-트리클로로에탄에 대한 용해도가 큰 반응행성물중의 하나인 HCFC-142b를 반응공정중에서 1,1,1-트리클로로에탄에 대해 20 mole% 이상 유지시켜 주므로서 유기층에 대한 불화수소의 용해도를 즈대시켜주고 1,1,1-트리클로로에탄 또는 비닐리덴클로라이드와 불화수소간의 반응을 촉진시켜 주는 동시에 염화수소 및 저비점 클로로플루오로 카본류를 제외한 반응혼합물을 반응기 하부로 부터 연속적으로 취출하여 생성물 분리후 재순환시켜 반응물의 반응기내 체류시간을 단축하므로서 타르의 생성을 방지시켜 줄 수 있도록 한 것이다. -
-
-
-
-
-
-
-
-
Search Results
128
records
(took 0.022 seconds)
