Production of propylene via simultaneous dehydration and skeletal isomerisation of isobutanol on acid catalysts followed by metathesis

摘要

A process for producing propylene includes simultaneously subjecting isobutanol to dehydration and skeletal isomerization to make a mixture of n-butenes and iso-butene. The n-butenes are subjected to methathesis. The process includes introducing isobutanol into a dehydration/ isomerization reactor and contacting the isobutanol with a catalyst at conditions effective to dehydrate and skeletal isomerase the isobutanol to make a mixture of n-butenes and iso-butene. A mixture of n-butenes and iso-butene are recovered and fractionated to produce an n-butenes stream.