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

1976-09-24

1978-05-09

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

423328, B01J 2906, C01B 3328

Patent

active

040886050

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: 3275571 (1966-09-01), Mattox

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