Chemosphere 2001-09-01

Catalyzed dehalogenation of Delor 103 by sodium hydridoaluminate.

J Hetflejs, M Czakóová, R Rericha, J Vcelák

Index: Chemosphere 44(6) , 1521-9, (2001)

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Abstract

The complete dechlorination of PCB liquid Delor 103 (42.6% Cl) to biphenyl has been effected in toluene with sodium dihydridobis(2-methoxyethoxo)aluminate (SDMA) in the presence of catalytic amounts of Ni(II) and Co(II) 2,4-pentanedionates at elevated temperatures. Changes in PCB congeners distribution during dechlorination were monitored by GC(ECD) and GC/MS, and the scheme of their transformation was proposed on the basis of site selectivity observed. A kinetic analysis of the reaction is presented.