| 摘要 |
<p>At the end of a liquid phase chemical process carried out in the presence of solid particles of supported or unsupported catalyst comprising a magnetic or magnetisable metal, for example a ferromagnetic metal such as Raney nickel, the catalyst particles in the liquid reaction mixture are magnetically flocculated by application of a magnetic field (either continuously or intermittently) the flocculated particles allowed to settle to the bottom of the process reactor and the supernatant liquid withdrawn from the reactor leaving the flocculated catalyst particles in situ in the reactor for further use. The process enables equipment usually supplied external to the process reactor for separation of the catalyst from the reaction mixture to be dispensed with, and catalyst life is increased. The process has applicability to a wide range of reactions in which magnetic catalysts are used, for example hydrogenations, dehydrogenations etc.</p> |
