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:
Jun. 30, 2009
Filed:
Oct. 25, 2005
Jean W. Beeckman, Columbia, MD (US);
Glenn R. Sweeten, East Stroudsburg, PA (US);
Daria N. Lissy, Glen Mills, PA (US);
David L. Stern, Baton Rouge, LA (US);
Stephen J. Mccarthy, Center Valley, PA (US);
Dominick N. Mazzone, Wenonah, NJ (US);
Christine N. Elia, Bridgewater, NJ (US);
Jean W. Beeckman, Columbia, MD (US);
Glenn R. Sweeten, East Stroudsburg, PA (US);
Daria N. Lissy, Glen Mills, PA (US);
David L. Stern, Baton Rouge, LA (US);
Stephen J. McCarthy, Center Valley, PA (US);
Dominick N. Mazzone, Wenonah, NJ (US);
Christine N. Elia, Bridgewater, NJ (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
The present invention describes a method to increase the activity of a catalyst by first performing an ion exchange step with a potassium ion, followed by performing an ion-exchange step with an ammonium ion. Specifically, the present invention describes a method to increase the acidity of a zeolite by incorporating a potassium salt ion-exchange prior to an ammonium salt ion-exchange step. Even more specifically, the present invention is drawn to a method of increasing the activity of a zeolite by employing more than one potassium ion exchanges followed by at least one ammonium ion exchange. The present invention also describes a method to reduce the amount of sodium normally found in commercially produced zeolite by employing any of these methods. The present invention is also drawn to the catalysts produced by any of these methods.