EFFECT OF ALCOHOL ADDITION ON DECOMPOSITION OF CHLOROFLUOROCARBONS (CFCS) UNDER ALCOHOLIC ALKALINE HYDROTHERMAL CONDITIONS

Citation
M. Fujita et al., EFFECT OF ALCOHOL ADDITION ON DECOMPOSITION OF CHLOROFLUOROCARBONS (CFCS) UNDER ALCOHOLIC ALKALINE HYDROTHERMAL CONDITIONS, Nippon kagaku kaishi, (8), 1998, pp. 566-568
Citations number
3
Language
GIAPPONESE
art.tipo
Letter
Categorie Soggetti
Chemistry
Journal title
ISSN journal
0369-4577
Issue
8
Year of publication
1998
Pages
566 - 568
Database
ISI
SICI code
0369-4577(1998):8<566:EOAAOD>2.0.ZU;2-O
Abstract
Effect of some kinds of alcohol addition to alkali solvent on hydrothe rmal decompositions of various kind of halogenated carbons such as chl orofluorocarbons (CFCs) with 1-4 carbons was investigated. We have alr eady reported the perfect decomposition of the CFCs under methanolic a lkaline hydrothermal treatment at lower temperature compared to superc ritical water oxidation (SCWO) process. Here, in order to clarify the effect of alcohol addition to solvent, the relation of concentration o f halogenide ion and organic ions were investigated. Furthermore the o rganic carbons mere analyzed by C-13-NMR to confirm the origin of the carbon whether from the oxidation of added alcohol or from the transfo rmation of starting CFCs, It was revealed that the carbon-halogen bond ings can be completely dehalogenated and the halogenide ions were rele ased into the aqueous solution and can neutralize with alkali therefor e, the perfect process for the elimination of the toxicity should be p ossible in the hydrothermal treatment.