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:
Dec. 06, 2011
Filed:
Mar. 09, 2009
Applicants:
Guang Cao, Princeton, NJ (US);
Gordon J. Kennedy, Washington, NJ (US);
Matu J. Shah, Hackettstown, NJ (US);
Inventors:
Guang Cao, Princeton, NJ (US);
Gordon J. Kennedy, Washington, NJ (US);
Matu J. Shah, Hackettstown, NJ (US);
Assignee:
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 39/00 (2006.01); C01B 39/02 (2006.01); C07C 1/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method is disclosed of treating a porous crystalline molecular sieve having a pore size less than or equal to about 5 Angstroms to decrease its coke selectivity in oxygenate to olefin conversion reactions. The method comprises contacting the molecular sieve with an acid having a kinetic diameter greater than or equal to that of acetic acid.