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. 10, 2013
Filed:
Jun. 30, 2008
Cristina Ferrini, Breganzona, CH;
Daniel Herein, Berlin, DE;
David Linke, Berlin, DE;
Uwe Rodemerck, Rostock, DE;
Evgeny Kondratenko, Rostock, DE;
Cristina Ferrini, Breganzona, CH;
Daniel Herein, Berlin, DE;
David Linke, Berlin, DE;
Uwe Rodemerck, Rostock, DE;
Evgeny Kondratenko, Rostock, DE;
Casale Chemicals S.A., , CH;
Abstract
A new process for producing a SAPO molecular sieve is disclosed wherein a mixture of a P source with an Al source is subjected to a digestion step under stirring before adding a Si source and a template. The slurry resulting after addition of all chemicals is subjected to a pH adjustment followed by the usual hydrothermal treatment at higher temperature in an autoclave. In this way, very pure highly crystalline SAPO molecular sieves such as SAPO-34 are obtained with a very high yield. In addition, the SAPOs produced this way have an exceptional activity in the dehydration reactions and can be employed as a active component of catalysts for the production of valuable dehydration products from methanol such as, but not limited to, olefins and dimethylether (DME).