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:
Jan. 04, 2005
Filed:
Dec. 31, 2002
Machteld M. Mertens, Boortmeerbeek, BE;
Brita Engels, Betekom, BE;
Ronald G. Searle, Houston, TX (US);
Grigore Pop, Bucharest, RO;
Irina Rodica Tamas, Bucharest, RO;
Rodica Ganea, Bucharest, RO;
Ruxandra Birjega, Bucharest, RO;
Machteld M. Mertens, Boortmeerbeek, BE;
Brita Engels, Betekom, BE;
Ronald G. Searle, Houston, TX (US);
Grigore Pop, Bucharest, RO;
Irina Rodica Tamas, Bucharest, RO;
Rodica Ganea, Bucharest, RO;
Ruxandra Birjega, Bucharest, RO;
Exxon Mobil Chemical Patents Inc., Houston, TX (US);
Abstract
The invention is directed to a method for making a silicoaluminophosphate (SAPO) molecular sieve from a reaction mixture comprising components present in amounts sufficient to form the SAPO, the reaction mixture having a first pH. The method comprises the steps of: adding an acid to the reaction mixture after the reaction mixture undergoes a change in pH from the first pH; and crystallizing the SAPO from the reaction mixture. The present invention is also directed to a silicoaluminophosphate molecular sieve made by this process.