Process for producing faujasitic-type crystalline zeolites

Details Process for producing faujasitic-type crystalline zeolites Process for producing faujasitic-type crystalline zeolites

1973-10-10

1976-04-06

Meros, Edward J.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

C01B 3328

Patent

active

039490599

ABSTRACT:
Faujasitic-type crystalline zeolites X and Y are produced. In one embodiment, sodium sulfide is added to the reaction mixture as a source of sodium and as a buffer. The buffering action of the sodium sulfide provides the basicity required to maintain the alumina hydrate component of the reaction mixture in solution but not a basicity whereby zeolite crystallization is retarded. In another embodiment, a nucleating mixture having the formula

REFERENCES:
patent: 2882244 (1959-04-01), Milton
patent: 3130007 (1964-04-01), Breck
patent: 3574538 (1971-04-01), McDaniel et al.
patent: 3733390 (1973-05-01), Robson
patent: 3849463 (1974-11-01), Dwyer et al.

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