Kinetics and free energy change during the reductive dehalogenation of carbon tetrachloride by elemental iron
Conference
·
OSTI ID:126348
- Univ. of Arizona, Tucson, AZ (United States)
An elemental iron cathode was used to promote the electrolytic dehalogenation of carbon tetrachloride at set potentials ranging from -0.6 to -1.0V (vs. SHE). Part-per-thousand levels of CCl{sub 4} were reduced to chloroform in a matter of hours. Reaction kinetics were sensitive to the applied potential and solution pH. The latter observation suggests that hydrogen is formed by the reduction of H{sup +} in the cathodic cell and serves as an intermediate for CCl{sub 4} hydrogenolysis. In the range of 5 x 10{sup -4} to 5 x 10{sup -3} min{sup -1}, the effective first order rate constant for carbon tetrachloride reduction was correlated to the overall free energy change in the reaction.
- OSTI ID:
- 126348
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
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