Xylene isomerization process

Details Xylene isomerization process Xylene isomerization process

1997-04-10

1999-11-09

Caldarola, Glenn

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By isomerization

585480, C07C 527

Patent

active

059818174

ABSTRACT:
A process for isomerizing a nonequilibrium xylene feed mixture is disclosed. The isomerization is conducted in the presence of hydrogen and at pressures in excess of 75 psig over a ZSM-5 type catalyst containing about 0.1 to 5 wt % of at least one metal selected from the group consisting of zinc, copper, silver and gallium. In another embodiment, the catalyst may further contain an oxide of at least one element selected from silicon, germanium and tin. The process produces a product containing about or above equilibrium quantities of para-xylene with low xylene loss.

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