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. 02, 2003
Filed:
Jun. 28, 2001
Medhat K. Tannous, Arlington Heights, IL (US);
Sonu Marchioretto, Downers Grove, IL (US);
Lyle E. Monson, Rolling Meadows, IL (US);
UOP LLC, Des Plaines, IL (US);
Abstract
Applicants have developed a continuous process for synthesizing various molecular sieves. The process enables one to control both the particle size and particle size distribution. Any of the molecular sieves represented by the empirical formula on an anhydrous basis: rR O:(Si Al P )O , where R is at least one structure directing agent, “r”, “x”, “y” and “z” are the mole fractions of R, Si, Al and P respectively, can be prepared using this process. The process involves continuously adding separate streams comprising reactive sources of at least each framework element into a continuous crystallization reactor. Either interstage backmixing is introduced or the number of stages is adjusted in order to control particle size.