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Title: Debromination of 1,4-dibromobenzene and 4,4'-dibromobiphenyl: A model for cleansing of PCBs
Authors: Li, S. 
Ngew, H.S.
Chan, S.O.H. 
Ng, S.C. 
Lee, H.K. 
Hor, T.S.A. 
Issue Date: Feb-1997
Citation: Li, S., Ngew, H.S., Chan, S.O.H., Ng, S.C., Lee, H.K., Hor, T.S.A. (1997-02). Debromination of 1,4-dibromobenzene and 4,4'-dibromobiphenyl: A model for cleansing of PCBs. Environmental Monitoring and Assessment 44 (1-3) : 481-485. ScholarBank@NUS Repository.
Abstract: The aim of this study is to develop a. catalytic method which has advantages over current methods to detoxify and degrade environmentally harmful polychlorinated biphenyls (PCBs). A variety of catalysts have been employed in a preliminary study on 1,4-dibromobenzene and 4,4'-dibromobiphenyl which may be considered to represent simple analogues of PCBs. The most satisfactory catalysts are those involving (Pd(dppf)] [dppf = 1,1'-bis(diphenylphosphino)ferrocene], generated in situ from PdCl2(dppf) or Pd(dppf)2. In the presence of the reducing reagent, namely NaBH4, debromination has been achieved at relative mild conditions with high product yields (> 70%). Thus, our results indicate the possibility of dechlorination of PCBs with such catalysts.
Source Title: Environmental Monitoring and Assessment
ISSN: 01676369
DOI: 10.1023/A:1005778000670
Appears in Collections:Staff Publications

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