nanosized mesoporous composite pw12-aptes@kit-6: an efficient heterogeneous catalyst for selective oxidation of sulfides to sulfoxides and sulfones

Authors

razieh fazaeli

hamid aliyan

somaieh parishani foroushani

zahra mohagheghian

zahra heidari

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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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...

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Journal title:

iranian journal of catalysis

Publisher: islamic azad university, shahreza branch

ISSN 2252-0236

volume 3

issue 3 2013

Keywords

[ ' m e s o p o r o u s s i l i c a k i t ' , 6 , ' h e t e r o g e n e o u s c a t a l y s i s ' , ' p o l y o x o t u n g s t a t e ' ]

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