| abstract |
It has been discovered that highly fluorinated antimony, especially as a hydrogen fluoride addition compound, can be used as an isomerisation catalyst for the isomerisation of certain halogen(hydro)carbon compounds. For example, 1,1,1-trifluoro-2,2-dichloroethane can be produced from 1,1,2-trifluoro-1,2-dichloroethane. The method is also suitable for the purification of certain (hydro)carbon compounds which are contaminated by isomerisable compounds. |