PW_{12}-APTES@MCF: effective nanosized mesoporous composites for the oxidation of benzyl alcohols

Authors

RAZIEH FAZAELI
HAMID ALIYAN
SOMAIEH PARISHANI FOROUSHANI
ZAHRA MOHAGHEGHIAN

DOI

10.3906/kim-1212-40

Abstract

The surface of mesocellular silica foam (MCF) was modified by grafting 3-aminopropyl-triethoxysilane (APTES) to have a positive charge, and thus to provide sites for the immobilization of H_3PW_{12}O_{40} (PW_{12}). This modified nanosized mesoporous silica (PW_{12}-APTES@MCF) was characterized by FTIR, XRD, BET, and TEM. XRD and adsorption--desorption analysis shows that the mesostructure of silica remains intact after various modifications, while the spectral technique shows the successful grafting of the neat PW_{12} inside the porous silica support. The oxidation of alcohols occurs effectively and selectively with H_2O_2 as the oxidant. PW_{12}-APTES@MCF was used as the catalyst. The catalyst can be reused several times but it will be less active.

Keywords

Mesocellular silica foam (MCF), heterogeneous catalysis, polyoxotungstate

First Page

372

Last Page

380

Recommended Citation

FAZAELI, RAZIEH; ALIYAN, HAMID; FOROUSHANI, SOMAIEH PARISHANI; and MOHAGHEGHIAN, ZAHRA (2014) "PW_{12}-APTES@MCF: effective nanosized mesoporous composites for the oxidation of benzyl alcohols," Turkish Journal of Chemistry: Vol. 38: No. 3, Article 2. https://doi.org/10.3906/kim-1212-40
Available at: https://journals.tubitak.gov.tr/chem/vol38/iss3/2