GUO Jintang, ZHU Chengcai, TIAN Jing, et al. Application of novel ionic liquid in copolymerization of carbon monoxide and styrene[J]. CIESC Journal, 2008, (2): 497-502.
GUO Jintang, ZHU Chengcai, TIAN Jing, et al. Application of novel ionic liquid in copolymerization of carbon monoxide and styrene[J]. CIESC Journal, 2008, (2): 497-502.DOI:
Room temperature ionic liquid 1-butyl-3-methylpyridinium hexafluorophosphate as solvent for palladium-catalyzed copolymerization of carbon monoxide and styrene was prepared by the reaction of 4-methyl pyridine
bromobutane and potassium hexafluorophosphate under microwave irradiation.Ionic liquid and copolymer were characterized by elemental analysis
thermogravimetry (TG)
GPC
1H NMR spectroscopy and Fourier transform infrared spectroscopy (IR).The different palladium catalysts
amount of ionic liquid
reaction time and the reusability of the catalyst-ionic liquid system were discussed.It was found that the yield of polyketone and the catalytic activity of catalyst-ionic liquid system were enhanced over conventional solvent under similar conditions and it was also found that the composite catalyst-ionic liquid system still kept 51% of the initial catalytic activity after 4 successive cycles.