Selective aromatics disproportionation/transalkylation

Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By alkyl or aryl transfer between molecules – e.g.,...

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585470, C07C 522

Patent

active

060084235

ABSTRACT:
An improved process is disclosed for the selective disproportionation and transalkylation of toluene. The process uses a zeolitic catalyst, preferably comprising a binder, containing a weak metal in a defined reduced state which is believed to provide Lewis acidity in the catalyst. The catalyst and process provide improved selectivity for the production of paraxylene.

REFERENCES:
patent: 4097543 (1978-06-01), Haag et al.
patent: 4276437 (1981-06-01), Chu
patent: 4724066 (1988-02-01), Kirker et al.
patent: 4922055 (1990-05-01), Chu

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