发明名称 |
PROCESS FOR THE PREPARATION OF 1,1,1,2-TETRAFLUOROETHANE |
摘要 |
The invention relates to a process for the preparation of 1,1,1,2-tetrafluoroethane from 1,1,1-trifluoro-2-chloro-ethane and hydrogen fluoride in the gas phase, in which a catalyst containing chromium and magnesium is used which is obtainable by precipitating chromium(III) hydroxide by reacting 1 mol of a water-soluble chromium(III) salt with at least 1.5 mol of magnesium hydroxide or magnesium oxide in the presence of water, the reaction mixture is made into a paste containing chromium hydroxide and a magnesium salt, and the paste is then dried and treated with hydrogen fluoride at temperatures of 20 to 500.degree.C.
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申请公布号 |
CA2025145(C) |
申请公布日期 |
2001.04.17 |
申请号 |
CA19902025145 |
申请日期 |
1990.09.12 |
申请人 |
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发明人 |
WANZKE, WOLFGANG;SIEGEMUND, GUENTER;SCHMIEDER, WILFRIED |
分类号 |
B01J23/26;C07B61/00;C07C17/10;C07C17/20;C07C19/08;(IPC1-7):C07C17/20 |
主分类号 |
B01J23/26 |
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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