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US 6,645,461 B1Granted
Process for production of zeolites with high Si/Al atomic ratio
AssigneeSud-Chemie AG
InventorsKlaus K. Unger, Andreas F. K. Hahn
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Abstract
A process for the production of zeolites with a high Si/Al atomic ratio formed by the conversion of amorphous polysilicas (polysilacic acid) with a source of aluminum ions and optionally a template wherein the conversion occurs at a temperature of less than about 100° C., wherein ammonium hydroxide and/or an alkali metal silicate is added to the conversion solution.
Claims20
A process for the production of zeolite products comprising
- preparing an amorphous silica or polysilicic acid solution,
- adding a source for aluminum ions as well as an ammonium hydroxide solution or an alkali metal silicate solution to obtain a reaction solution,
- heating the reaction solution to a temperature of less than about 100° C. to induce conversion to a zeolite product, and
- separating and drying the zeolite product.
1 more element
Dependencies are inferred from the claim text.