Detoxification of aryl-organochlorine compounds by catalytic reduction in supercritical carbon dioxide

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DOIResolve DOI: http://doi.org/10.1039/B208407D
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TypeArticle
Journal titleGreen Chemistry
Volume5
Issue1
Pages2529; # of pages: 5
AbstractPentachlorophenol, octachloronaphthalene and decachlorobiphenyl were smoothly converted to cyclohexanol, decalin and dicyclohexyl, respectively, by reaction, during 0.5–2 h, with excess hydrogen over alumina-supported palladium (5% w/w) in the presence/absence of supercritical carbon dioxide (50–90 °C). With these conditions, dechlorinations and dearomatization to their cyclic analogs were complete but no carbon–carbon bond scission was observed and only traces of partial deoxygenation/dimerization of the pentachlorophenol substrate (to form 1,1′-oxybiscyclohexane) was seen. The scCO₂ medium functioned as an inert support for the reactions; differences in rates of reaction between chlorinated compounds and their aromatic hydrocarbon homologs were not observed. These results suggest that environmentally recalcitrant chlorinated aromatic compounds can be detoxified facilely by catalytic reduction with H₂ under mild conditions.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number51974
NPARC number14547607
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Record identifier03f99cf3-f0cd-4922-8ea0-3e77142f8be4
Record created2010-03-19
Record modified2016-05-09
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