FIELD: chemistry.
SUBSTANCE: method involves: (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 (c) are carried out at the same time in the same reactor.
EFFECT: use of the present method enables to avoid use of expensive reactants and formation of toxic by-products.
21 cl, 3 ex, 3 tbl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING 2,3,3,3-TETRAFLUOROPROPYLENE | 2009 |
|
RU2535215C2 |
| METHOD OF PRODUCING 2,3,3,3-TETRAFLUOROPROPYLENE | 2009 |
|
RU2535214C2 |
| METHOD OF PRODUCING (HYDRO)FLUOROPROPENE | 2007 |
|
RU2466121C2 |
| METHOD OF CATALYTIC PRODUCTION OF HEXAFLUOROPROPENS | 2007 |
|
RU2451659C2 |
| METHOD OF PRODUCING FLUORINATED OLEFINS (VERSIONS) | 2007 |
|
RU2457195C2 |
| METHOD OF OBTAINING 2,3,3,3-TETRAFLUOROPROPENE | 2009 |
|
RU2523546C2 |
| METHOD OF PRODUCING 2,3,3,3-TETRAFLUOROPROPENE | 2009 |
|
RU2463285C2 |
| METHOD OF OBTAINING 1, 1,1-TRIFLUORO-2, 3-DICHLOROPROPANE | 2009 |
|
RU2476413C2 |
| METHODS OF PRODUCING TETRAFLUOROPROPENE | 2007 |
|
RU2445302C2 |
| METHOD OF SEPARATING FLUOROLEFINS FROM FLUOROHYDROGEN BY AZEOTROPIC DISTILLATION | 2007 |
|
RU2466979C2 |
