Method of manufacture of multicationic molecular sieves

Details Method of manufacture of multicationic molecular sieves Method of manufacture of multicationic molecular sieves

B - Operations, Transporting

01

J

B01J 20/18 (2006.01) B01J 29/06 (2006.01) B01J 29/70 (2006.01) B01J 37/30 (2006.01) C01B 39/02 (2006.01)

Patent

CA 2332706

Zeolites exchanged with lithium cations and polyvalent cations are prepared by first partially ion-exchanging a sodium-containing zeolite, a potassium- containing zeolite or a sodium- and potassium-containing zeolite with polyvalent cations, then heat-treating the partially polyvalent cation- exchanged zeolite, then ion exchanging the heat-treated zeolite with ammonium cations, and then reacting the ammonium cation-exchanged zeolite with a water-soluble lithium compound under conditions which result in the removal of ammonia from the reaction zone.

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