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

Authors

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

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

Somaieh Parishani Foroushani Department of Chemistry, Shahreza Branch, Islamic Azad University, 86145-311, Iran.

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

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

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.

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Journal title

Iranian Journal of Catalysis

volume 3 issue 3

pages 129- 137

publication date 2013-09-01

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Keywords

Mesoporous silica KIT-6 Heterogeneous catalysis Polyoxotungstate

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