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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 5, 2010
Accepted May 28, 2010

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Preparation, characterization, and oxidation catalysis of H3PMo12O40 heteropolyacid catalyst immobilized on carbon aerogel

Yongju Bang Dong Ryul Park Yoon Jae Lee Ji Chul Jung¹ In Kyu Song^†

School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Shinlim-dong, Gwanak-gu, Seoul 151-744, Korea ¹Department of Chemical Engineering, Myongji University, San 38-2, Nam-dong, Yongin, Gyeonggi-do 449-728, Korea

inksong@snu.ac.kr

Korean Journal of Chemical Engineering, January 2011, 28(1), 79-83(5), 10.1007/s11814-010-0335-z

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Abstract

Carbon aerogel (CA) with high surface area and large pore volume was prepared by polycondensation of resorcinol with formaldehyde. The surface of CA was then modified to have a positive charge, and thus to provide a site for the immobilization of H3PMo12O40 (PMo12) catalyst. By taking advantage of the overall negative charge of [PMo12O40]3-, PMo12 catalyst was chemically immobilized on the surface-modified CA as a charge matching component._x000D_ It was found that PMo12 catalyst was finely dispersed on the CA support via chemical interaction. In the vaporphase 2-propanol conversion reaction, the PMo12/CA catalyst showed a higher 2-propanol conversion than the unsupported PMo12 catalyst. Furthermore, the PMo12/CA catalyst showed an enhanced oxidation catalytic activity (formation of acetone) and a suppressed acid catalytic activity (formation of propylene and isopropyl ether) compared to the unsupported PMo12 catalyst. The enhanced oxidation activity of PMo12/CA catalyst was due to fine dispersion of [PMo12O40]3- on the CA support formed via chemical immobilization.

Keywords

Heteropolyacid Catalyst Carbon Aerogel Chemical Immobilization Oxidation Catalysis

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