FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing 2,3,3,3-tetrafluoropropylene (1234yf). The method includes: (a) reaction of 1,1,2,3,3,3-hexafluoropropylene (1216) with hydrogen in the presence of a hydrogenation catalyst to form 1,1,2,3,3,3-hexafluoropropane (236ea); (b) dehydrofluorination of 236ea to form 1,2,3,3,3-pentafluoropropylene (1225ye); (c) reaction of 1225ye with hydrogen in the presence of a hydrogenation catalyst to form 1,2,3,3,3-pentafluoropropane (245eb); and (d) dehydrofluorination of 245eb to form 1234yf, where steps (a) and (d) are carried out in the presence of a catalyst which contains activated carbon, a base metal and/or a transition metal.
EFFECT: use of the present method enables to avoid use of expensive reactants and formation of toxic by-products.
17 cl, 3 ex, 4 tbl, 3 dwg
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