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:
Oct. 23, 2012
Filed:
Apr. 18, 2012
Machteld M. Mertens, Boortmeerbeek, BE;
Stephen N. Vaughn, Kingwood, TX (US);
Guang Cao, Princeton, NJ (US);
Luc R. M. Martens, Meise, BE;
Mobae Afeworki, Lopatcong Township, NJ (US);
Machteld M. Mertens, Boortmeerbeek, BE;
Stephen N. Vaughn, Kingwood, TX (US);
Guang Cao, Princeton, NJ (US);
Luc R. M. Martens, Meise, BE;
Mobae Afeworki, Lopatcong Township, NJ (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
In a method of synthesizing a silicoaluminophosphate molecular sieve having 90%+CHA framework type character, a reaction mixture is prepared comprising first combining a reactive source of aluminum with a reactive source of phosphorus to form a primary mixture that is aged. A reactive source of silicon and a template for directing the formation of the molecular sieve can then be added to form a synthesis mixture. Crystallization is then induced in the synthesis mixture. Advantageously, (i) the source of silicon comprises an organosilicate, (ii) the source of phosphorus optionally comprises an organophosphate, and (iii) the crystallized silicoaluminophosphate molecular sieve has a crystal size distribution such that its average crystal size is not greater than 5 μm. The molecular sieve can then preferably be used in a hydrocarbon (oxygenates-to-olefins) conversion process.