METHOD OF PREPARING 2-HYDROHEPTAFLUOROPROPANE OR MIXTURE OF 2-HYDROHEPTAFLUOROPROPANE AND OCTAFLUOROPROPANE Russian patent published in 1999 - IPC

Abstract RU 2134680 C1

FIELD: chemical technology of fluorine compounds. SUBSTANCE: method comprises preparing 2- hydroheptafluoropropane or mixture of hydroheptafluoropropane and octafluoropropane by gas- phase catalytic hydrofluorination of hexafluoropropylene at 200-515 C, HF to hexafluoropropylene molar ratio of 0.6-7:1, contact time of 1.5-45 on catalyst comprising 8- 24 wt % of chromium fluoride distributed over magnesium fluoride. EFFECT: desired product with high selectivity, and simplified process. 4 ex, 4 tbl

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RU 2 134 680 C1

Authors

Mitina I.E.

Trukshin I.G.

Barabanov V.G.

Andreev V.I.

Dates

1999-08-20—Published

1998-02-03—Filed