Process for producing substantially binder-free zeolite

Details Process for producing substantially binder-free zeolite Process for producing substantially binder-free zeolite

1995-05-26

1997-09-09

Bell, Mark L.

Chemistry of inorganic compounds

Zeolite

Seed used

423710, 423712, 423716, 423DIG21, 423DIG22, 423DIG26, 423DIG27, 423DIG33, 423DIG35, 423DIG36, 423DIG38, 502 64, 502 70, 502 71, 502 77, C01B 3924, C01B 3930, C01B 3936, C01B 3942

Patent

active

056653255

ABSTRACT:
Silica-bound extruded zeolites may be converted into binder-free zeolite aggregates by aging the zeolite in an aqueous ionic solution which contains hydroxy ions such that the initial molar ratio of OH.sup.- :SiO.sub.2 is up to 1.2 and which causes the silica binder to be converted substantially to zeolite of the type initially bound. Such extrudates have excellent mechanical strength and show advantageous properties such as adsorption comparable with non-extruded zeolite powder.

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