Catalytic dechlorination of chlorobenzene in water by Pd/Fe bimetallic system

Article type: Research Article

Authors: Zhou, Hong-yi^; | Xu, Xin-hua | Wang, Da-hui

Affiliations: Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China | College of Biological & Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China

Abstract: Catalytic reductive dechlorination of monochlorobenzene (MCB) was carried out in the palladium/iron system. With low Pd loading (0.005%), 45% dechlorination efficiency was achieved within 5 h. Pd as catalyst accelerated the reductive dechlorination reaction. Dechlorination mechanism and kinetics were discussed. The reaction took place on the bimetal surface in a pseudo-first-order reaction, with the rate constant being 0.0071 min^{−1} (K_{SA}=8.0×10^{-3} L/(m^{2}·h)). The reduction product for MCB was benzene.

Keywords: reductive dechlorination, catalytic, palladium/iron, chlorobenzene

Journal: Journal of Environmental Sciences, vol. 15, no. 5, pp. 647-651, 2003