Nanosized mesoporous composite PW12-APTES@KIT-6: An efficient heterogeneous catalyst for selective oxidation of sulfides to sulfoxides and sulfones
محورهای موضوعی : Iranian Journal of CatalysisRazieh Fazaeli 1 , Hamid Aliyan 2 , Somaieh Parishani Foroushani 3 , Zahra Mohagheghian 4 , Zahra Heidari 5
1 - Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran.
2 - Department of Chemistry, Mobarakeh Branch, Islamic Azad University, 84815-119, Iran.
3 - Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran.
4 - Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran.
5 - Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran.
کلید واژه: Heterogeneous catalysis, Mesoporous silica KIT-6, Polyoxotungstate,
چکیده مقاله :
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.
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