Process for increasing the activity of zeolite containing partic

Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...

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502 27, 502 29, B01J 2034

Patent

active

059003839

ABSTRACT:
A process for increasing the activity of a zeolite-containing particulate solid containing contaminants which block the pores of the zeolite and adversely affect the activity thereof wherein the contaminated zeolitic material is slurried with a liquid containing an acid, detergent or surfactant, the slurry is agitated to liberate the pore-blocking contaminants from the zeolite pores so that they are suspended in the liquid, a portion of the liquid is withdrawn from the slurry and filtered to remove the suspended contaminants, the resulting liquid is returned to the slurry, and the treated zeolite-containing particulate solid is liquid from the solution and recovered.

REFERENCES:
patent: 3647718 (1972-03-01), Haden, Jr. et al.
patent: 4163709 (1979-08-01), Burk et al.
patent: 4826793 (1989-05-01), Velten et al.
patent: 4985136 (1991-01-01), Bartholic

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