| 摘要 |
organic chemistry, chemical technology. SUBSTANCE: invention relates to method of synthesis of pentafluoroethane containing 1-chloropentafluoroethane in the amount below 0.02 wt. %. Pentafluoroethane is synthesized in the process of conversion of tetrafluorochloroethane CF3CHC1F in gaseous phase in the presence of chrome oxide catalyst (Cr2O3) applied on carrier containing AlF3 followed by its isolation from compounds obtained. The above mentioned carrier has fluorine content corresponding to at least to 90% of AlF3 with respect to total carrier weight. Process is carried out at 140-300 C and time contact for 0.1-30 s. Synthesized pentafluoroethane has small amount of 1-chloropentafluoroethane. EFFECT: improved method of synthesis, small amount of impurity. 7 cl, 5 ex
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