| 摘要 |
<p>Catalytic process for the manufacture of acid fluoride from carbon monoxide, hydrogen fluoride, and an aliphatic hydrocarbon stream mainly containing at least one alkane containing 3 to 4 carbon atoms, comprising the following series of stages: (a) introduction of at least one fluid chosen from carbon monoxide and the hydrocarbon stream into a reactor in the presence of a superacidic catalyst system consisting essentially of hydrogen fluoride and antimony pentafluoride, (b) where appropriate, if it has not already been introduced during stage (a), introduction into the reactor of a fluid chosen from carbon monoxide and the hydrocarbon stream, the reactor being at a temperature not above 60 DEG C. to permit the formation, principally, of a complex consisting of the alkyloxocarbonium cation and the anion SbF6-, (c) conversion of the complex into acid fluoride, (d) separation of the acid fluoride, and (e) recovery of the superacidic catalyst system. The process is applicable to the manufacture of methylmethacrylate.</p> |
