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Issue 9, 2013
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Highly selective liquid-phase aerobic oxidation of vanillyl alcohol to vanillin on cobalt oxide (Co3O4) nanoparticles†

Ajay Jhaa  and  Chandrashekhar V. Rode*a  
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* Corresponding authors

a Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Pune 411008, India
E-mail: cv.rode@ncl.res.in
Fax: +91 20 2590 2621
Tel: +91 20 2590 2349

Abstract

Spinel Co3O4 nanoparticles prepared by solution phase method having particle size in the range of 12–20 nm exhibited excellent activity for the liquid-phase aerobic oxidation of vanillyl alcohol with 80% conversion and 98% selectivity to vanillin. Our catalyst could be reused three times without appreciable loss in activity. The catalytic activity of the Co3O4 nanoparticles was found to be similar to its homogenous precursor (cobalt acetate) and greater than the commercial Co3O4 oxide. The detailed characterization results of morphology, size and structure of the prepared Co3O4 nanoparticles obtained by XRD, FT-IR, H2-TPR, HR-TEM and cyclic voltammetry technique were used to understand the roles of various Co species in directing the selectivity towards vanillin.

Graphical abstract: Highly selective liquid-phase aerobic oxidation of vanillyl alcohol to vanillin on cobalt oxide (Co3O4) nanoparticles

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Article information

https://doi.org/10.1039/C3NJ00508A
Submitted
13 May 2013
Accepted
04 Jun 2013
First published
05 Jun 2013
New J. Chem., 2013,37, 2669-2674
Article type
Paper
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Highly selective liquid-phase aerobic oxidation of vanillyl alcohol to vanillin on cobalt oxide (Co3O4) nanoparticles

A. Jha and C. V. Rode, New J. Chem., 2013, 37, 2669
DOI: 10.1039/C3NJ00508A

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