Uop Lcc

Benjamin D Riley

Sanjay B Sharma

James A Johnson

Sergey V Gurevich

Patrick J Silady

Gail L Gray

Greg A Rosinski

An improved process is disclosed for ethylbenzene and xylene isomerization in a non-equilibrium mixture of xylenes and ethylbenzene. By addition of trace quantities of water to the reaction zone, equivalent isomerization is effected at lower temperatures wherein benefits could be realized in reduced losses and improved catalyst life.

Process for the activation of an alkylaromatic isomerization catalyst by water

This invention is drawn to a process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene using an oil-dropped catalyst comprising a zeolite, a platinum-group metal and an aluminophosphate binder, resulting in a greater yield of para-xylene at favorable conditions compared to processes of the known art.

Selective xylenes isomerization and ethylbenzene conversion

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Chicago, IL, United States of America

Benjamin D Riley