US 5,350,722 A · MTW-type zeolite and its preparation process

Abstract

The invention relates to a synthetic crystalline zeolite of the MTW type, characterized by: a) the following approximate general formula: M.sub.2/n O, Al.sub.2 O.sub.3, xSiO.sub.2 in which M represents a metal cation and/or proton, n is the valency of M and x is a number between 14 and 800, b) a X-ray diagram shown in table I of the description, c) a fluorine content between approximately 0.005 and 2% by weight, said zeolite having been synthesized in a fluoride medium and accompanied by stirring.

Claims10

Dependent claims

Synthetic crystalline zeolite of the MTW type characterized by:

a) the following approximate general formula:
M.sub.2/n O, Al.sub.2 O.sub.3, xSiO.sub.2
in which M represents a metal cation and/or a proton, n is the valency of M and x is a number between 14 and 800,
b) a X-ray diagram shown in table I of the description,
c) a fluorine content between approximately 0.005 and 2% by weight, said zeolite having been synthesized in a fluoride medium, accompanied by stirring.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

07/920,487Filed 20 Aug 1992

Priority

FR 90 1625621 Dec 1990

Granted

27 Sep 1994

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

B01J 29/7034
Of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65: mTW-type, e.g. ZSM-12, NU-13, TPZ-12 or Theta-3
C01B 39/42
Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction…:…
B01J 2229/26
After treatment, characterised by the effect to be obtained: to stabilize the total catalyst structure
B01J 2229/42
After treatment, characterised by the means used: addition of matrix or binder particles

MTW-type zeolite and its preparation process

Life of this patent

MTW-type zeolite and its preparation process

Life of this patent

Abstract

Claims10