Selective dealumination of zeolites

Details Selective dealumination of zeolites Selective dealumination of zeolites

1986-06-13

1987-03-31

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By ring formation from nonring moiety, e.g., aromatization,...

C07C 284

Patent

active

046544542

ABSTRACT:
This invention relates to a process for selective dealumination, particularly surface dealumination of zeolites by sequential ion-exchange and calcination. The process is selective in the sense that the aluminum atoms within the pore structure of the zeolite remain virtually intact.
The surface dealuminated zeolites can be used, after loading with a gallium compound, as catalysts in hydrocarbon conversion reactions.

REFERENCES:
patent: 4180689 (1979-12-01), Davies et al.
patent: 4487843 (1984-12-01), Telford et al.
patent: 4565897 (1986-01-01), Gane et al.
patent: 4579988 (1986-04-01), Kieffer
Breck, Zeolite Molecular Sieves, John Wiley & Sons, N.Y., 1974, pp. 529-590.

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