The promotion effects of some triflates in the copolymerization of styrene and CO were studied.It was found that PdCl2showed good catalytic activity in the exist of some triflates and among them Cu（OTf）2showed the best promotion effects.Under the reaction conditions: 1×10-4mol PdCl2,5×10-4mol bipy,2×10-4mol Cu（OTf）2,3×10-3mol BQ,4ml methanol,10ml styrene,T=333K,P=3.0MPa,the catalytic activity of PdCl2/ bipy / M（OTf）nis 18,000gPK/molPd.h.The effects of the amount of Cu（OTf）2and trific acid on PdCl2catalytic activity were also studied.Mechanism of copolymerization catalyzed by this catalytic system wasdiscussed.
