A CATALYST, ITS PREPARATION AND USE

摘要

A process for preparing a catalyst which process comprises preparing a mi xture comprising iron oxide and at least one Column 1 metal or compound ther eof, wherein the iron oxide is obtained by heating a mixture comprising an i ron halide and at least 0.05 millimoles of a Column 6 metal per mole of iron ; a catalyst made by the above described process; an iron oxide composition; a process for the dehydrogenation of an alkylaromatic compound which proces s comprises contacting the alkylaromatic compound with the catalyst; and a m ethod of using an alkenylaromatic compound for making polymers or copolymers , in which the alkenylaromatic compound has been produced by the dehydrogena tion process.