发明名称 |
СПОСОБ ПОЛУЧЕНИЯ 1,1,1,2-ТЕТРАФТОРЭТАНА |
摘要 |
FIELD: organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to a method for preparing fluoro-organic compounds. Method involves the gas-phase catalytic hydrofluorination of trifluoroethylene at increased temperature in the presence of the chrome-magnesium-fluoride catalyst comprising 8-24 wt.-% of trivalent chrome fluoride uniformly distributed in magnesium fluoride with the dispersity index from 0.125 to 0.315 mm. The process is carried out at temperature 140-190C and time contact for 4.5 s. Method provides the high yield of 1,1,1,2-tetrafluoroethane with selectivity index up to 99.9%. ^ EFFECT: improved preparing method. ^ 2 tbl, 7 ex |
申请公布号 |
RU2003125382(A) |
申请公布日期 |
2005.02.10 |
申请号 |
RU20030125382 |
申请日期 |
2003.08.18 |
申请人 |
Федеральное государственное унитарное предпри тие Российский научный центр "Прикладна хими " (RU) |
发明人 |
Дмитриев Андрей Валентинович (RU);Трукшин Игорь Георгиевич (RU);Барабанов Валерий Георгиевич (RU) |
分类号 |
C07C17/21;C07C19/08 |
主分类号 |
C07C17/21 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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