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:
Feb. 26, 2013
Filed:
May. 01, 2007
Guang Cao, Branchburg, NJ (US);
Matu J. Shah, Hackettstown, NJ (US);
Guang Cao, Branchburg, NJ (US);
Matu J. Shah, Hackettstown, NJ (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
A method is disclosed of treating a crystalline material comprising a CHA framework-type molecular sieve, wherein said crystalline material has a composition and involving the molar relationship:()XO:YO,where X is a trivalent element, Y is a tetravalent element, and n is less than 0.07, and wherein the crystalline material does not comprise a silicoaluminophosphate, is substantially free of framework phosphorus, or both. The method can comprise treating the crystalline material with steam under conditions such that the prime olefin selectivity of the treated material in an oxygenate conversion process is greater than the prime olefin selectivity of the untreated material in the same process.