Verfahren zum Halogen-Fluor-Austausch in organischen Verbindungen und Katalysatoren hierzu
申请人:BAYER AG
公开号:EP0425887A2
公开(公告)日:1991-05-08
Wismut/Erdalkalimetall-Katalysatoren, die 0,005-0,8 gA Wismut pro Mol der eingesetzten Erdalkaliverbindung enthalten und weiterhin Promotoren und/oder inerte Zusatzstoffe enthalten können, sowie Lanthanid-Katalysatoren mit oder ohne Katalysatorträger können als Katalysatoren für den Halogen-Fluor-Austausch in organischen Verbindungen mittels Fluorwasserstoff eingesetzt werden.
铋/碱土金属催化剂(每摩尔碱土化合物含 0.005-0.8 gA 的铋)和镧系催化剂(含或不含催化剂载体)可用作通过氟化氢在有机化合物中进行卤素-氟交换的催化剂。
PROCESS FOR PRODUCING FLUORINATED ALKENE DERIVATIVE AND FLUORINATED ALKANE DERIVATIVE
申请人:JAPAN as represented by DIRECTOR GENERAL,
AGENCY OF INDUSTRIAL SCIENCE AND TECHNOLOGY
公开号:EP0768289A1
公开(公告)日:1997-04-16
A vic-dichloro-fluorinated alkene of the formula: R1-CCl=CCl-R2, and a fluorinated alkane of the formula: R1-CR3R4-CR5R6-R2, wherein each of R1 and R2 independently represents a perfluoroalkyl group or both of R1 and R2 form together a perfluoroalkylene group, and R3, R4, R5 and R6 independently represent hydrogen or fluorine, are produced from an inexpensive raw material. More specifically, hexachlorocyclopentadiene is reacted with gaseous chlorine using an antimony catalyst, and then the reaction product is reacted with hydrogen fluoride to give 1,2-dichlorohexafluorocyclopentene. Thus-obtained compound is either (i) hydrogenated, or (ii) treated with a fluorinating agent to substitute the chlorine atoms by fluorine atoms, and then hydrogenated, to give the intended fluorinated alkane.
Method for preparing perhalogenated five-membered cyclic compound
申请人:Central Glass Company, Limited
公开号:EP0999195A1
公开(公告)日:2000-05-10
The invention relates to a method for preparing a fluorinated product that is a first perhalogenated five-membered cyclic compound (e.g., 1,2-dichlorohexafluorocyclopentene and 1,1-dichlorooctafluorocyclopentane). This method includes reacting in a gas phase a starting material that is a second perhalogenated five-membered cyclic compound having at least one unsaturated bond, at substantially the same time with chlorine and hydrogen fluoride, in the presence of a fluorination catalyst containing an activated carbon optionally carrying thereon a metal compound, thereby to decrease the number of the at least one unsaturated bond and to increase the number of fluorine atoms of the second compound. The method is appropriate for the production of the first perhalogenated five-membered cyclic compound in an industrial scale.