| 摘要 |
PURPOSE: A manufacturing method of 1,1,1,2-tetrafluoroethane is provided to improve process cost, and process safety, because of using environment-friendly raw material of lost cost like tetrafluoroethane as a starting material, and not using hydrogen fluoride. CONSTITUTION: A manufacturing method of 1,1,1,2-tetrafluoroethane comprises: a step of generating 1,1,2,2-tetrafluoroethane by reacting tetrafluoroethane with gaseous hydrogen under the presence of a hydrogenation catalyst; and a step of obtaining 1,1,1,2-tetrafluoroethane through isomerization of the 1,1,1,2-tetrafluoroethane under the presence of a fluorination catalyst. The concentration of 1,1,2,2- tetrafluoroethane which is an intermediate product is 70 mol% or higher. The hydrogenation catalyst comprises one or more metal atoms selected from platinum group elements like platinum, palladium, rhodium, iridium, ruthenium, osmium, etc.
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