Ammonium activation of zeolites in the presence of gaseous ammon

Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – Activating treatment

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502 26, B01J 2906, B01J 2938

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active

048717029

ABSTRACT:
Alumina-composited zeolite catalysts are activated by contact with an aqueous ammonium solution under ammonia gas pressure such that a pH of at least about 10 is maintained in the solution. The treated zeolite may thereafter be calcined without prior ammonium-exchange to provide the zeolite in the hydrogen form.

REFERENCES:
patent: 3404086 (1968-10-01), Plank et al.
patent: 4596704 (1986-06-01), Miale et al.

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