Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By alkyl or aryl transfer between molecules – e.g.,...
Patent
1998-12-17
2000-05-16
Griffin, Walter D.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By alkyl or aryl transfer between molecules, e.g.,...
585470, C07C 522
Patent
active
060639776
ABSTRACT:
An improved catalyst and process are disclosed for the selective disproportionation of toluene. The process uses a zeolitic catalyst which is oil-dropped in an aluminum phosphate binder and has an X-ray diffraction pattern showing characteristic intensities at specified Bragg angles. Optionally, the catalyst is selectively precoked prior to toluene disproportionation. The catalyst and process provide improved selectivity for the production of paraxylene.
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Boldingh Edwin P.
Gajda Gregory J.
Holmgren Jennifer S.
Conser Richard E.
Dang Thuan D.
Griffin Walter D.
Spears Jr. John F.
Tolomei John G.
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