Palladium catalysts have been used in the hydrodechlorination of perchlorob
enzene under mild conditions. PdCl2 is not very active for this reaction. H
owever, when PdCl2 is supported on PVP (polyvinyl pyrrolidone), it exhibits
a high activity. Pd-Co supported on PVP displays a bimetallic synergic eff
ect and gives higher catalytic activity. The catalytic activity can be incr
eased further by using NaBH4 to reduce the catalyst instead of H-2 prior to
use. (C) 2000 Elsevier Science B.V. All rights reserved.