Process for the thermal activation of zeolites and resultant pro

Details Process for the thermal activation of zeolites and resultant pro Process for the thermal activation of zeolites and resultant pro

1991-06-03

1993-05-18

Breneman, R. Bruce

Chemistry of inorganic compounds

Zeolite

With change of synthesized zeolite morphology

502 60, 502 79, C01B 3334

Patent

active

052119297

ABSTRACT:
The invention describes a process for thermal activation of zeolites that are sensitive to hydrothermal degradation by percolating a hot gas through a homogeneous bed of granulates of the said zeolites. It applies to type A an X zeolites, and more particularly to their forms exchanged by potassium or calcium and one preferably uses air, the temperature of which ranges between about 300.degree. C. and 700.degree. C., preferably between 550.degree. C. and 600.degree. C., and preferably with dehydrated and decarbonated air, forced through the bed of granulates at linear velocities ranging between 0.01 and 1 m/second NTP. The process makes it possible to obtain novel zeolites with high nitrogen adsorption capacity.

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