The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2001
Filed:
Jun. 14, 1999
Raymond Le Van Mao, Saint-Laurent, CA;
Concordia University, Montreal, CA;
Abstract
Provided herein is are acidic Z5M-5 zeollte materials which are highly active and selective in the synthesis of methyl tert-butyl ether (MTBE) and similar ethers. The materials are obtained by the preparation method comprising the main steps of: i) impregnation of zeolites with fluorine species using ammonium fluoride as precursor, preferably with a F loading of ca.1.9×10,mol.g,of zeolite; and ii) stepwise activation in air at preferably 250° C. and then preferably at 300° C. to 500° C., preferably 450° C. The method is preferably applied to desilicated ZSM-5 zeolite and provides conversion rates to MTBE superior to those obtained with prior art commercial AMBERLYSF™ resin (gas phase reaction at 70-80° C.) is obtained. No by-products, commonly produced by prior art commercial organic resin catalyst, are detected in the product spectrum.