Active zeolite catalysts of improved stability

Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By isomerization

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585408, 585410, 585416, 585469, 585640, 585733, 502 77, C07C 100, C07C 120, C07C 122, C07C 530

Patent

active

044291760

ABSTRACT:
A zeolite of improved stability for use in acid-catalyzed reactions is prepared by mildly presteaming the catalyst under controlled conditions of temperature, time, and steam partial pressure. The resulting catalyst retains nearly the same activity as that of a fresh unsteamed catalyst.

REFERENCES:
patent: 4188282 (1980-02-01), Tabak et al.
patent: 4224141 (1980-09-01), Morrison et al.
patent: 4236996 (1980-12-01), Tabak et al.
patent: 4283584 (1981-08-01), Chester et al.
patent: 4324696 (1982-04-01), Miale

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