Synthesis of aluminophosphate and metalloaluminophosphate molecular sieves

US7901664B2 · kind B2 · utility

Assignee

• ExxonMobil Chemical Patents Inc. · US

Inventors

• Guang Cao · Readington, US
• Mobae Afeworki · Phillipsburg, US
• Matu J. Shah · Hackettstown, US
• Machteld M. Mertens · Boortmeerbeek, BE

Key dates

• Filing date: Mar 31, 2008
• Grant date: Mar 8, 2011
• Expiry date: Jul 9, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S423/30
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a method of synthesizing an aluminophosphate or metalloaluminophosphate molecular sieve, a synthesis mixture is provided comprising water, a source of aluminum, a source of phosphorus, optionally a source of a metal other than aluminum, a tertiary amine, and an alkylating agent capable of reacting with said tertiary amine to form a quaternary ammonium compound capable of directing the synthesis of said molecular sieve. The synthesis mixture is maintained under conditions sufficient to cause the alkylating agent to react with the tertiary amine to produce the quaternary ammonium compound and to induce crystallization of the molecular sieve.