Process for the preparation of catalysts containing crystalline aluminosilicate zeolites
Abstract
Abstract AN AQUEOUS SUSPENSION OF A ZEOLITE, WHICH HAS HAD ITS ALKALI METAL CONTENT REDUCED BY AT LEAST ONE ION EXCHANGE REACTION AND HAS THEN BEEN THERMALLY METAL SILICATE COMBINED WITH AN AQUEOUS ALKALINE ALKALI METAL SILICATE SOLUTION, AND SILICON DIOXIDE IS GELLED FROM THE ZEOLITE CONTAINING SOLUTION BY THE ADDITION OF MINERAL ACID, PREFERABLY TO THE SILICATE SOLUTION IMMEDIATELY BEFORE THE COMBINING OF THE LATTER WITH THE ZEOLITE SUSPENSION. THE RESULTING ZEOLITE-CONTAINING GEL IS COMBINED WITH A SOLUTION OR SOLUTIONS OF AT LEAST ONE COMPOUND OF A METAL FROM GROUPS II-A, III-A AND IV-A OF THE PERIODIC TABLE, AND THEN HYDROLYZED, WHEREUPON THE ZEOLITE CONTAINING PRECIPATE IS WASHED AND DRIED TO PROVIDE A CATALYST CONTAINIMG A CRYSTALLINE ALUMINOSILICATE ZEOLITE, SILICON DIOXIDE AND AN OXIDE OF AT LEAST ONE METAL FROM THE MENTIONED GROUPS OF THE PERIODIC TABLE.
Inventors
- 👤 H Maat
- 👤 A Berg
Bibliographic Details
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