ZSM-5 Containing aluminum-free shells on its surface

Details ZSM-5 Containing aluminum-free shells on its surface ZSM-5 Containing aluminum-free shells on its surface

1978-12-01

1980-05-20

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

B01J 2906

Patent

active

042038693

ABSTRACT:
Aluminosilicate zeolites are prepared containing an outer aluminum-free shell. The outer shell is essentially SiO.sub.2 that has crystallized on the zeolite surface in the ZSM-5 type configuration, leading to a more selective catalyst.

REFERENCES:
patent: 3941871 (1976-03-01), Dwyer et al.
patent: 4088605 (1978-05-01), Rollmann

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