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Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry Volume 41, 2011 - Issue 10
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Original Articles

Preyssler Heteropolyacid Supported on Nano-SiO2: A Green and Reusable Catalyst in Selective Oxidation of Benzyl Alcohols to Benzaldehydes

Fatemeh F. Bamoharram Department of Chemistry, Islamic Azad University, Mashhad Branch, Mashhad, I. R. Iran
,
Majid M. Heravi Department of Chemistry, School of Science, Alzahra University, Vank, Tehran, I. R. Iran
,
Hoda Teymouri Department of Chemistry, Islamic Azad University, Mashhad Branch, Mashhad, I. R. Iran
,
Mojtaba Zebarjad Department of Materials Science and Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, I. R. Iran
&
Ali Ahmadpour Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, I. R. Iran
Pages 1221-1228 | Received 16 Oct 2010, Accepted 01 Mar 2011, Published online: 02 Dec 2011
 
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Abstract

An efficient, improved, and environmentally benign procedure for catalytic oxidation of benzyl alcohols to the corresponding benzaldehdes was developed in the presence of nano-SiO2-supported Preyssler heteropolyacid (HPA), both in thermal conditions and under microwave irradiation. Silica nanostructures were obtained through a sol–gel method and were characterized by transmission electron microscopy and powder x-ray diffraction. Nano-SiO2-supported Preyssler HPA was synthesized by an impregnation method and confirmed by infrared spectroscopy. In catalytic reactions, the effects of various parameters such as catalyst loading, catalyst amount, temperature, and reaction time were studied and the optimum conditions were obtained.

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