C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 33/02 (2006.01) B01J 20/10 (2006.01) B01J 21/16 (2006.01) C02F 1/42 (2006.01) C01B 33/40 (2006.01)
Patent
CA 2381391
The present invention is directed to a process for the preparation of crystalline anionic clay-containing bodies from sources comprising an aluminium source and a magnesium source comprising the steps of: a) preparing a precursor mixture, b) shaping the precursor mixture to obtain shaped bodies, c) optionally thermally treating the shaped bodies, and d) ageing to obtain crystalline anionic clay-containing bodies. The quintessence of the present invention is that the bodies are shaped prior to the forming of the crystalline anionic clay in said bodies. This results in very attrition resistant bodies, without the need to add a binder material.
L'invention concerne un procédé de préparation de corps contenant une argile anionique et cristalline provenant de sources renfermant une source d'aluminium et une source de magnésium consistant a) à préparer un mélange précurseur, b) à façonner le mélange précurseur pour obtenir des corps façonnés, c) à traiter thermiquement éventuellement les corps façonnés et d) à faire vieillir les corps pour obtenir des corps contenant une argile anionique et cristalline. La quintessence de l'invention repose sur le fait que les corps sont façonnés avant la formation de l'argile anionique cristalline de manière à obtenir des corps résistants à l'attrition sans avoir à ajouter un liant.
O'connor Paul
Stamires Dennis
Akzo Nobel N.v.
Albemarle Netherlands B.v.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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