发明名称 |
PROCESS FOR THE PREPARATION OF 1,1,1-TRIFLUORO-2-CHLOROETHANE |
摘要 |
The invention relates to a process for the preparation of 1,1,1-trifluoro-2-chloroethane from trichloroethene and hydrogen fluoride in the gas phase. In this process a catalyst containing chromium and magnesium is used, which catalyst is obtainable by precipitating chromium(III) hydroxide by reacting 1 mole of a water-soluble chromium(III) salt with at least 1.5 mol of magnesium hydroxide or magnesium oxide in the presence of water, converting the reaction mixture into a paste containing chromium hydroxide and a magnesium salt and then drying the paste and treating it at temperatures of 20 DEG to 500 DEG C. with hydrogen fluoride.
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申请公布号 |
US5157172(A) |
申请公布日期 |
1992.10.20 |
申请号 |
US19920844948 |
申请日期 |
1992.03.02 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
WANZKE, WOLFGANG;SIEGEMUND, GUENTER;MUELLER, THOMAS |
分类号 |
B01J23/26;B01J23/92;C07B61/00;C07C17/00;C07C17/20;C07C17/21;C07C19/08 |
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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