Electrooxidation of Formic Acid on Palladium Nanoparticles Supported on Ordered Mesoporous Carbon

doi:10.3969/j.issn.0251-0790.2012.02.021

Abstract

Abstract: Ordered mesoporous carbon(MPC) supported palladium catalysts were prepared by impregnation(MPC/Pd-1) and the method of using sulfur to embed noble metal[MPC/(S)Pd-2], respectively. The properties of the MPC/Pd were investigated by XRD, HRTEM, BET and electrochemical methods. Cyclic voltammetry and current-time curve show that MPC/Pd exhibits a very high catalytic activity for the oxidation of formic acid, which is 4.0(MPC/Pd-1) and 2.4 times[MPC/(S)Pd-2] that of commercial Pd black. Pd nanoparticles on MPC/Pd-1 are confined in the pores of MPC(5—6 nm), which increases the reaction interfaces of the three-phase boundary(catalyst-electrolyte-reactive), whereas Pd nanoparticles on MPC/(S)Pd-2 are loaded inside the small mesoporous of the pore wall(2—3 nm), which decreases utilization of the catalyst.

Key words: Mesoporous carbon, Palladium, Formic acid, Electrooxidation

CLC Number:

O646

TrendMD:

CHEN Ming-Hui, HE Chun-Lan, ZHANG Bin-Wei, JIANG Yan-Xia, CHEN Sheng-Pei, SUN Shi-Gang. Electrooxidation of Formic Acid on Palladium Nanoparticles Supported on Ordered Mesoporous Carbon[J]. Chem. J. Chinese Universities, 2012, 33(02): 331.

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Electrooxidation of Formic Acid on Palladium Nanoparticles Supported on Ordered Mesoporous Carbon

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