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Pure Appl. Chem., 2007, Vol. 79, No. 11, pp. 1905-1914

Heterogeneous catalysts and process for reductive dechlorination of polychlorinated hydrocarbons

Ekaterina S. Lokteva1, Elena V. Golubina1, Stanislav A. Kachevsky1, Anara O. Turakulova1, Valery V. Lunin1 and Pietro Tundo2

1 Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1 Building 3, Moscow 119992, Russia
2 INCA Consortium, Via delle Industrie, 21/8-30175 Marghera (VE), Italy

Abstract: The utilization and decomposition of chlorinated wastes without formation of dioxins are challenges of great environmental importance. In this work, the catalytic reductive methods of chlorinated organics processing are described, focusing on catalyst development. Pd-containing catalysts are improved by modification of supports [use of ultra dispersed diamond (UDD) or double oxides] or by dilution of Pd by not-noble metals (Fe, Ni, Cu). Both ways are effective for the processing of 1,3,5-trichlorobenzene (TCB) as a model of polychlorinated organics. The reasons for improvement of catalysts are discussed. The best catalysts were effectively used for hydrodechlorination (HDC) of hexachlorobenzene (HCB).