Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By isomerization
Patent
1985-06-19
1986-07-08
Metz, Andrew H.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By isomerization
502 71, 502 77, C07C 522
Patent
active
045994757
ABSTRACT:
An improved process is disclosed for the isomerization of xylenes over a zeolite which may contain a platinum group metal. The improvement resides in the use of ZSM-23 zeolite which exhibits enhanced selectivity which inhibits the production of undesired C.sub.9.sup.+ aromatic transalkylation by-products. ZSM-23 having pores substantially unobstructed by silica, such as that made from a forming mixture containing amorphous precipitated silica as a silica source, has been found to be particularly useful in the process of the present invention.
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Kresge Charles T.
Nicoletti Michael P.
Vartuli James C.
Gilman M. G.
Hobbes L. P.
McKillop A. J.
Metz Andrew H.
Mobil Oil Corporation
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