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:
Jul. 13, 2010
Filed:
May. 29, 2007
Luc R. M. Martens, Meise, BE;
Marcel J. Janssen, Kessel-Lo, BE;
Nicolas Coute, Houston, TX (US);
James R. Lattner, La Porte, TX (US);
Luc R. M. Martens, Meise, BE;
Marcel J. Janssen, Kessel-Lo, BE;
Nicolas Coute, Houston, TX (US);
James R. Lattner, La Porte, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
This invention is directed to a method of rejuvenating a molecular sieve that has decreased catalytic activity as a result of contact with moisture, and a method of using the rejuvenated catalyst to make an olefin product from methanol feed. The molecular sieve can be rejuvenated by heating at a rate sufficient to increase the catalytic activity of the molecular sieve. The molecular sieve is considered to be rejuvenated when the molecular sieve has a CMCPS that is increased by at least 5% relative to that at a heat rate basis of 40° C./min over a temperature range of from 25° C. to 475° C.