Two-stage aromatics isomerization process

Details Two-stage aromatics isomerization process Two-stage aromatics isomerization process

2008-05-06

2008-05-06

Dang, Thuan Dinh (Department: 1797)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

C585S480000, C585S481000, C585S482000

Reexamination Certificate

active

07368620

ABSTRACT:
This invention is drawn to a process for isomerizing a non-equilibrium mixture of alkylaromatics in two sequential zones, the first zone operating in the absence of hydrogen using a platinum-free catalyst and the second zone using a catalyst comprising a molecular sieve and a platinum-group metal component to obtain improved yield of para-xylene from the mixture relative to prior art processes.

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