C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 39/36 (2006.01) B01J 29/40 (2006.01) C01B 39/38 (2006.01) C01B 39/40 (2006.01)
Patent
CA 2496900
The present invention relates to a process for the preparation of doped pentasiltype zeolite, which process comprises the steps of: a) preparing an aqueous precursor mixture from a silicon source, an aluminium source, and doped non-zeolitic seeds, and b) thermally treating the precursor mixture to form a doped pentasil-type zeolite. The term "non-zeolitic seeds" includes seeds made from materials selected from the group consisting of (i) X-ray amorphous materials, (ii) milled crystalline materials, such as milled zeolites, that have a relative crystallinity of not more than 75%, and (iii) crystalline materials other than zeolites, such as clays (e,g, bentonite and kaolin) and (low) crystalline aluminas.
La présente invention concerne un processus de préparation de zéolite de type pensatile dopé. Ce processus consiste: (a) à préparer un mélange précurseur aqueux d'une source de silicium, d'une source d'aluminium et de germes non zéolitiques dopés et, (b) à traiter thermiquement ce mélange précurseur de façon à former un zéolite de type pensatile dopé. L'expression <= germes non zéolitiques >= inclut des germes fabriqués à partir de matériaux sélectionnés dans le groupe constitué des (i) matériaux amorphes au rayon X, (ii) des matériaux cristallins broyés, tels que des zéolites broyés, qui possèdent une cristallinité relative qui n'excède pas 75 % et, (iii) des matériaux cristallins autres que des zéolites, tels que des argiles (par exemple la bentonite et le kaolin) et des alumines (faiblement) cristallines.
Brady Mike
Laheij Erik Jeroen
O'connor Paul
Stamires Dennis
Albemarle Netherlands B.v.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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