Process for the production of nan-sized zeolite A

US7014837B2 · kind B2 · utility

Assignees

• E.I. DU PONT DE NEMOURS AND COMPANY · US
• Northwestern University · US
• UNIVERSITY OF CONNECTICUT · US

Inventors

• David Richard Corbin · New Castle, US
• Albert J. Sacco · Holden, US
• Steven L. Suib · Storrs, US
• Qiuhua Zhang · Qingyuan, CN

Key dates

• Filing date: Sep 16, 2003
• Grant date: Mar 21, 2006
• Expiry date: Dec 17, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S423/24
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Described is a process to synthesize nano-size Zeolite A from an amorphous gel precursor which can be synthesized via reaction of NaAlO2, NaOH, and tetraethoxysilane (TEOS). Zeolite A with particle sizes of ˜150 nm was made by transformation of the amorphous precursor in (CH3)4NOH solution with Zeolite A seeding. The nano-sized Zeolite A can be part of processes for making non-phosphate detergent where the as-synthesized Zeolite A used as builders, for making thin films for separation and/or catalysis, for making secondary ordered patterns.