Author/Authors :
Fazaeli, Razieh Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran., ايران , aliyan, Hamid islamic azad university, ايران , Parishani Foroushani, Somaieh islamic azad university, ايران , Mohagheghian, Zahra Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran., ايران , Heidari, Zahra Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran., ايران
Abstract :
Surface of mesostructured silica, KIT-6, was modified by grafting 3-aminopropyl-triethoxysilane (APTES) to have the positive charge, and thus, to provide sites for the immobilization of H3PW12O40 (PW12). This modified-nanosized mesoporous silica (PW12-APTES@ KIT-6) was characterized by FTIR, XRD, BET and TEM. The oxidation of sulfides occurs effectively and selectively with H2O2 as the oxidant. PW12-APTES@KIT-6 was used as the catalyst. The catalyst can be reused for several times but it will be less active.
Keywords :
Mesoporous silica KIT , 6 , Heterogeneous catalysis , Polyoxotungstate ,
