Nanosized mesoporous composite PW12-APTES@KIT-6: An efficient heterogeneous catalyst for selective oxidation of sulfides to sulfoxides and sulfones

Iranian Journal of Catalysis

مقاله 2، دوره 3، شماره 3، آذر 2013، صفحه 129-137   

نویسندگان

Razieh Fazaeli^{* 1}؛ Hamid Aliyan²؛ Somaieh Parishani Foroushani¹؛ Zahra Mohagheghian¹؛ Zahra Heidari¹

¹Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran.

²Department of Chemistry, Mobarakeh Branch, Islamic Azad University, 84815-119, Iran.

چکیده

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.

کلیدواژه‌ها

Mesoporous silica KIT-6؛ Heterogeneous catalysis؛ Polyoxotungstate

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