PROCESSES FOR PREPARATION OF 1,1,1,2,3- PENTAFLUOROPROPYLENE AND PROCESS FOR PREPARATION OF 1,1,1,2,3-PENTAFLUOROPROPANE

摘要

FIELD: chemical industry. SUBSTANCE: claimed invention describes processes for preparation of 1,1,1,2,3-pentafluoropropylene which comprises removing HF by reaction of 1,1,1,2,3- hexafluoropropane in gaseous state with activated carbon or with activated carbon containing metal salt. 1,1,1,2,3-hexafluoropropane can be obtained by using efficient industrial methods with high yields. Claimed invention also describes processes for preparation of 1,1,1,2,3-pentafluoropropane which comprise reducing 1,1,1,2,3-pentafluoropropylene with hydrogen in the presence of hydrogenation catalyst consisting of palladium containing one or more metals selected from silver, copper, gold, tellurium, zinc, chromium, molybdenum and thallium or in the presence of rhodium catalyst. The desired product can be obtained at high reactiveness and high selectivity. EFFECT: more efficient preparation processes.