MFI-type zeolite and its preparation process

U.S. Patent Number: 5338525

Abstract: Synthetic crystalline zeolite of the MFI type and its preparation process, said zeolite being characterized by: a) the following approximate general formula: in which M represents an alkaline cation and/or ammonium cation and/or a proton, x is a number between 0 and 24, y is a number between 0 and 24, (x+y) is a number between 0.64 and 24 and preferably between 1.88 and 19.2, b) a X-ray diagram of its ammonium form shown in Table I of the description and c) a fluorine content of its ammonium form between approximately 0.01 and 2.0% by weight, said zeolite having been synthesized in a fluoride medium and in the absence of an organic agent.

Inventors: Joly; Jean-Francois (Paris, FR), Caullet; Philippe (Illzach, FR), Guth; Jean-Louis (Mulhouse, FR), Faust; Anne-Catherine (Mulhouse, FR), Brunard; Nathalie (Lyons, FR), Kolenda; Frederic (Lyons, FR)

Assignee: Institut Francais du Petrole (Rueil Malmaison Cedex, FR)

Application Number: 07/923,880

Issued: 1994-08-16

Expired: 2006-08-16

Classes: 423/326 ; 423/329.1; 423/332; 502/61; 502/64

Field of search: 502/64,60,61,66 423/328.2,329.1,332,326

Click the image above to view patent images at uspto.gov within a frame.

Click here for the fulltext page on uspto.gov within a frame.