Photocatalytic composites containing titanium and limestone

Details Photocatalytic composites containing titanium and limestone Photocatalytic composites containing titanium and limestone

C - Chemistry, Metallurgy

04

B

C04B 14/30 (2006.01) B01J 35/00 (2006.01) B01J 37/03 (2006.01) C01G 23/00 (2006.01) C01G 23/047 (2006.01) C04B 40/00 (2006.01)

Patent

CA 2732591

New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, followed by accurately washing the solid obtained, drying it and calcining it. A composite is obtained containing limestone, titanium dioxide and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity.

Nouveau produit catalytique contenant des composés de titane avec du calcaire intégré. Ce produit s'obtient en faisant réagir du calcaire avec un précurseur approprié du dioxyde de titane dans une solution basique, suivi d'un lavage approfondi du mélange ainsi obtenu, d'un séchage et d'une calcination. Le composite obtenu contient du calcaire, du dioxyde de titane et du calcium titanate. Utilisé tel quel ou mélangé à d'autres composants, ce composite s'est révélé posséder une activité photocatalytique étonnamment élevée.

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