Silica-modified zeolite catalyst and conversion therewith

Details Silica-modified zeolite catalyst and conversion therewith Silica-modified zeolite catalyst and conversion therewith

1976-03-31

1977-11-29

Davis, C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252455Z, 260668R, 260672T, 260676R, 423328, C07C 120, C07C 124

Patent

active

040605680

ABSTRACT:
A catalyst is provided, which is especially applicable for the selective production of certain desired hydrocarbons, comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12, a constraint index, as hereinafter defined, within the approximate range of 1 to 12 and having contained within the interior crystalline structure thereof added amorphous silica in an amount of at least about 0.1 and preferably between about 2 and about 10 weight percent. The invention described herein also encompasses synthesis of the specified catalyst and use of the same in selectively producing low molecular weight olefins and/or para-xylene from appropriate charge stocks.

REFERENCES:
patent: 3244766 (1966-04-01), Keough
patent: 3529033 (1940-09-01), Frilette et al.
patent: 3894106 (1975-07-01), Chang et al.
patent: 3894107 (1975-07-01), Butter et al.
patent: 3911041 (1975-10-01), Kaeding et al.

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