摘要:
A process for the preparation of partly fluorinated ethanes of the general formulaCF.sub.3 --CFH.sub.x Cl.sub.2-xin which x=0, 1 or 2, is indicated which comprises reacting, as the reactant, partly fluorinated ethane of the general formulaC.sub.2 F.sub.3 H.sub.x Cl.sub.3-xin which x=0, 1, or 2, and, as the fluorinating agent, partly fluorinated ethanes of the general formulaCF.sub.3-x Cl.sub.x --CH.sub.3-y Cl.sub.yin which x=0, 1 or 2 and y=0, 1, 2 or 3 with one another in gaseous form in the presence of a chromium catalyst at temperatures of 150.degree. to 600.degree. C., the reactant and the fluorinating agent having the same chemical structural formula being excluded.
摘要翻译:表示制备通式为+ TI,CF 3 -CFH x Cl 2-x的部分氟化乙烷的方法,其中x = 0,1或2,其包括使作为反应物的通式为C 2 F 3 H x Cl 3的部分氟化乙烷反应, x,其中x = 0,1或2,并且作为氟化剂,通式为+ TI,CF3-xClx-CH3-yCly的部分氟化乙烷,其中x = 0,1或2和y = 0, 在铬催化剂存在下,在150℃〜600℃的温度下,气相形成1,2或3,排除反应物和具有相同化学结构式的氟化剂。
摘要:
The invention relates to a process for the preparation of 1,1,1-trifluoro-2,2-dichloroethane by chlorinating 1,1,1-trifluoro-2-chloroethane, in which the chlorination is carried out under an elevated pressure. The pressure is preferably 10 to 400 bar, particularly 50 to 250 bar. If the reaction is initiated by heat, it is preferably carried out at 200.degree. to 300.degree. C. If it is initiated by a free-radical starter, the reaction is preferably carried out at 150.degree. to 250.degree. C.