ETUDE DES PROPRIETES PHYSICO-CHIMIQUES DES OXYDES DE TITANE OBTENUS PAR VOIE SOL-GEL

Auteur : Abderrazak HAMAM
Année : 2012
Domaine : Génie Chimique
Type : Mémoire de magister
Etablissement : Université 8 mai 1945 de Guelma
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés : : Sol-Gel, Xerogels, titanium, composite, thermal analysis, FTIR

Résumé :

In this work, simple and composite xerogels based alcoxydes of titanium and silicon to knowing the titanium tetraisopropoxide Ti[OCH(CH3)2]4 , tetramethoxysilane Si(CH3)4 : were prepared by sol-gel processing. The solutions were prepared in acid, basic and neutral mediums. The gelation of these solutions whereas it varies between 5 hours and 9 days for the simple xerogels whiles it varies between 3-9 days for the composite xerogels. The gel obtained was dried at ambient temperature. The microstructural evolution of the simple and composite xerogels was followed by the differential thermal analysis (DTA), thermogravimetrie (TG) and by Fourier transforms infrared spectroscopy (FTIR).