C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 23/047 (2006.01) B01J 21/06 (2006.01) B01J 23/46 (2006.01) B01J 23/74 (2006.01) B01J 23/75 (2006.01) B01J 23/889 (2006.01) B01J 37/06 (2006.01) C10G 2/00 (2006.01) B01J 23/56 (2006.01) B01J 23/76 (2006.01) B01J 35/10 (2006.01)
Patent
CA 2458028
The invention relates to a process for the purification of titania by treating the titania with an aqueous solution comprising one or more ammonium compounds at elevated temperatures, separating the titania from the aqueous solution, drying the titania and, optionally, calcination of the dried titania. More especially the invention relates to the removal of sulphur (mainly present in the form of sulphate compounds) from the titania. The titania purified according to the above process is especially suitable for the use as catalyst carrier.
L'invention concerne un procédé de purification de titane consistant d'abord à traiter le titane avec une solution aqueuse renfermant un ou plusieurs composés d'ammonium à températures élevées, à séparer ensuite le titane de la solution aqueuse, à sécher le titane, et, éventuellement à calciner le titane ainsi séché. Plus particulièrement, l'invention concerne l'élimination du soufre (principalement présent sous forme de composés de sulfate) contenu dans le titane. Le titane purifié selon le procédé de l'invention convient particulièrement comme support catalytique.
Chettouf Abderrahmane
Mesters Carolus Matthias Anna Maria
Niesen Gerardus Petrus Lambertus
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Shell Internationale Research Maatschappij B.v.
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