Modified crystalline aluminosilicate zeolite catalyst and its us

Details Modified crystalline aluminosilicate zeolite catalyst and its us Modified crystalline aluminosilicate zeolite catalyst and its us

1990-05-14

1992-01-14

Pal, Asok

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

208111, 208120, 502 77, 585407, 585467, 585475, 585640, 585643, 585654, B01J 2938, B01J 2928

Patent

active

050808788

ABSTRACT:
The catalytic activity of a crystalline aluminosilicate zeolite having a Constraint Index of from about 1 to about 12 for a variety of hydrocarbon conversions including the oligomerization of olefins to provide high viscosity index lubes is significantly enhanced by modifying the catalyst to reduce surface acid sites. This is accomplished by contacting the zeolite with a fluorosilicate salt to extract surface zeolite aluminum which is replaced by silicon.

REFERENCES:
patent: 4450841 (1985-09-01), Miale et al.
patent: 4500421 (1985-02-01), Chang et al.
patent: 4503023 (1985-03-01), Breck et al.

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