VERFAHREN ZUR HERSTELLUNG VON OLEFINISCH UNGESAETTIGTEN VERBINDUNGEN DURCH NICHT-OXIDATIVE DEHYDRIERUNG

摘要

K 5909 The invention relates to a process for the preparation of a compound having the formula R-CH=CH2 by non-oxidative dehydrogenation of a compound having the formula R-CH2-CH3, wherein R is a phenyl, alkyl or alkenyl group. This process comprises passing a mixture of a compound having the formula R-CH2-CH3 , wherein R is a phenyl, alkyl or alkenyl group, and superheated steam at the dehydrogenation temperature, over a catalyst which is a spinel with an alkaline metal as accelerator. Application in the manufacture of styrene.