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US5420364A Process for the preparation of halogenated aromatic compounds 失效
卤代芳香族化合物的制备方法

Process for the preparation of halogenated aromatic compounds
摘要:
Halogenated aromatic compounds are prepared by passing esters of halogenoformic acid at temperatures in the range 150.degree. to 600.degree. C. and pressures from 0.1 to 3 bar over a catalyst containing chromium, magnesium, iron, silicon and/or aluminium, wherein if Al.sub.2 O.sub.3 catalysts are used these have been activated with hydrogen halide.
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