A process for the joint preparation of styrene and propylene oxide comprising the steps of: (a) reacting ethane and benzene to form ethylbenzene; (b) reacting ethylbenzene with oxygen or air to form ethylbenzene hydroperoxide; (c) reacting at least part of the ethylbenzene hydroperoxide obtained with propene in the presence of an epoxidation catalyst to form propylene oxide and 1-phenyl ethanol, and (d) dehydrating at least part of the 1-phenyl ethanol obtained into styrene in the presence of a suitable dehydration catalyst, wherein the ethene used in step (a) and the propene used in step (c) are at least partly provided by a fluid catalytic cracking unit.

Um processo para a preparação comum do óxido do styrene e do propylene que compreende as etapas de: (a) reagindo o ethane e o benzene ao ethylbenzene do formulário; (b) reagindo o ethylbenzene com o oxigênio ou o ar ao hydroperoxide do ethylbenzene do formulário; (c) reagindo ao menos a parte do hydroperoxide do ethylbenzene obtido com o propene na presença de um catalizador do epoxidation para dar forma ao óxido do propylene e ao ethanol 1-phenyl, e (d) desidratando ao menos a parte do ethanol 1-phenyl obtido no styrene na presença de um catalizador apropriado da desidratação, wherein o ethene usado na etapa (a) e o propene usado na etapa (c) são fornecidos ao menos em parte por uma unidade rachando catalytic fluida.