Ultrasonic synthesis of zeolites from fly ash

US9522828B2 · kind B2 · utility

Assignees

• ESKOM HOLDINGS SOC LIMITED · ZA
• UNIVERSITY OF THE WESTERN CAPE · ZA

Inventors

• Nicholas Mulei Musyoka · Cape Town, ZA
• Leslie Felicia Petrik · Cape Town, ZA
• Erich Hums · Prüm, DE

Key dates

• Filing date: Aug 8, 2012
• Grant date: Dec 20, 2016
• Expiry date: Jul 31, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B37/02
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for the preparation of zeolites from non-fused fly ash includes the steps of preparing an aqueous alkali hydroxyl solution and mixing the solution with the non-fused fly ash to create an aqueous alkali hydroxyl fly ash mixture, subjecting the mixture to ultrasonication and recovering the zeolites. The method may include the step of centrifuging the aqueous alkali hydroxyl fly ash mixture and washing the solid synthetic products (zeolites).