Catalyzed dehalogenation of Delor 103 by sodium hydridoaluminate.
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.
Hetflejs
J
J
Institute of Chemical Process Fundamentals, The Academy of Sciences of the Czech Republic, Prague.
Czakóová
M
M
Rericha
R
R
Vcelák
J
J
D002384:Catalysis; D002713:Chlorine / Q000737:chemistry; D003035:Cobalt / Q000737:chemistry; D004785:Environmental Pollutants / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D007202:Indicators and Reagents / Q000737:chemistry*; D007700:Kinetics; D009532:Nickel / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000737:chemistry*; D013696:Temperature; D014050:Toluene
D004785:Environmental Pollutants; D007202:Indicators and Reagents; D009942:Organometallic Compounds; C015550:2,4',5-trichlorobiphenyl; C007396:dihydrobis(2-methoxyethoxy)aluminate; D014050:Toluene; D003035:Cobalt; D002713:Chlorine; D009532:Nickel; D011078:Polychlorinated Biphenyls