PMID- 15120565
OWN - NLM
STAT- MEDLINE
DCOM- 20040809
LR  - 20061115
IS  - 0045-6535 (Print)
IS  - 0045-6535 (Linking)
VI  - 56
IP  - 2
DP  - 2004 Jul
TI  - Electrochemical reduction of organohalogen compound by noble metal sintered 
      electrode.
PG  - 187-93
AB  - 1,2,3-Trichlorobenzene (1,2,3-TCB) was used as a model sample of persistent 
      organic pollutants (POPs) which was dechlorinated by a closed electrochemical 
      reduction system under an inert gas atmosphere. The effect of the electrode 
      material was examined in the reaction. Dechlorination yields in different type of 
      cathode electrodes using sintered RuO2 (major)/Pt/PdO, sintered 
      Pt(major)/IrO2/RuO2, sintered RuO2, sintered PdO, sintered Pt, sintered PdO/Pt, 
      sintered Pd/Pt and plain Pd plate were 91%, 81%, 59%, 96%, 53%, 97%, 82% and 70% 
      respectively, at reaction times of 60 or 120 min. The reaction was exothermic 
      after initially starting at room temperature. This electrochemical reduction 
      system was friendly technology for environment using cation exchange membrane, 
      supplying sodium ions from sodium hydroxide solution as anolyte. Trace amounts of 
      dichlorobenzene, as products of stepwise dechlorination, were observed with 
      different pathways, depending on the electrode material. Electrodes with Ru and 
      Pd were selective mainly for meta-position dechlorination, while those with Pt 
      groups selective mainly for ortho-position (o-position) dechlorination. A PdO 
      sintered electrode had an especially high selectivity for meta-position 
      (m-position) dechlorination. The results suggest that dechlorination is an 
      electrocatalytic reduction in this cation supply system.
FAU - Miyoshi, Kumiko
AU  - Miyoshi K
AD  - Institute of Applied Biochemistry, University of Tsukuba, 1-1-1 Tennodai, 
      Tsukuba, Ibaraki 305-0006, Japan.
FAU - Kamegaya, Yoichi
AU  - Kamegaya Y
FAU - Matsumura, Masatoshi
AU  - Matsumura M
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Chlorobenzenes)
RN  - 0 (Metals)
RN  - 12002-48-1 (trichlorobenzene)
SB  - IM
EIN - Chemosphere. 2004 Sep;56(10):1019
MH  - Catalysis
MH  - Chlorobenzenes/*chemistry
MH  - Electrochemistry
MH  - Electrodes
MH  - Kinetics
MH  - Metals/*chemistry
MH  - Oxidation-Reduction
MH  - Time Factors
EDAT- 2004/05/04 05:00
MHDA- 2004/08/10 05:00
CRDT- 2004/05/04 05:00
PHST- 2003/04/23 00:00 [received]
PHST- 2003/10/31 00:00 [revised]
PHST- 2004/02/10 00:00 [accepted]
PHST- 2004/05/04 05:00 [pubmed]
PHST- 2004/08/10 05:00 [medline]
PHST- 2004/05/04 05:00 [entrez]
AID - S0045-6535(04)00127-4 [pii]
AID - 10.1016/j.chemosphere.2004.02.013 [doi]
PST - ppublish
SO  - Chemosphere. 2004 Jul;56(2):187-93. doi: 10.1016/j.chemosphere.2004.02.013.