| 发明名称 |
Recovering spent sulphuric acid after nitration reaction - by heating with silicon cpd. and ammonium sulphate |
| 摘要 |
<p>Process for recovering spent sulphuric acid after its use in the nitration of fluorinated aromatic cpds., e.g., 4-(trifluoromethyl) chlorobenzene, comrpises heating with a silicon cpd., e.g. a complex aluminium magnesium silicate, and (NH4)2SO4, at 150-275, pref. 200-220 deg. C.</p> |
| 申请公布号 |
DE2417989(C2) |
申请公布日期 |
1989.02.23 |
| 申请号 |
DE19742417989 |
申请日期 |
1974.04.11 |
| 申请人 |
ELI LILLY AND CO., INDIANAPOLIS, IND., US |
发明人 |
CHIASSON, WILLIAM JOSEPH;RUSSELL, RALPH THOMAS, LAFAYETTE, IND., US |
| 分类号 |
C01B17/94;C07C201/08;C07C201/16;C07C205/12 |
主分类号 |
C01B17/94 |
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