Mixed zeolites and method for producing same

Details Mixed zeolites and method for producing same Mixed zeolites and method for producing same

1992-11-23

1993-09-28

Dees, Carl F.

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

And additional al or si containing component

423709, B01J 2906, C01B 3334

Patent

active

052486435

ABSTRACT:
Mixed zeolites embedded in and strongly bound to a substrate and method for producing same are disclosed. The method comprises providing a plurality of seed zeolites, raw material for forming zeolites, the raw material comprising a source of silica, and a substrate, and combining the above, heat-treating the combination at a temperature and for a time sufficient to insure the formation of stable SiO.sub.2, and hydrothermally treating the heat-treated combination with alkali hydroxide, and optionally, a source of alumina as additional raw material at least when the combination is absent a source of alumina, to produce the mixed zeolites. The substrate can either enter into the reaction to form the zeolites, or they can be non-reactive.

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