Copolymerization of Carbon Dioxide and Propylene Oxide by DMC: Effect of Central Metal on Catalytic Performance
A series of double metal cyanide (DMC) complexes based on ZnaM(CN)bc(M = Fe2+, Cr3+, Ni2+ , Co3+ , Mn3+ , Mo4+ , Cd2+ and Fe3+) were prepared and employed as catalysts for copolymerization of propylene oxide and CO2 to investigate the effect of central metal on catalytic performance. The results showed that the efficiency of catalysts and the composition of products varied significantly with change of central metal. The DMC based on Co3+ , Ni2+ exhibited highest efficiency among these catalysts, which was 2000 and 482 g/g, whereas the DMC based on Cd2+, Mn3+ nearly exhibited no catalytic activity towards copolymerization. The copolymer with molar fraction of CO2(x(CO2))greater than 0.3 could be obtained when DMC based on Co3+ , Ni2+ , Fe3+ were employed, in contrast copolymers with low x(CO2) (≤0.1) produced in most cases for other catalysts.
double metal cyanide complex propylene oxide carbon dioxide
CHEN Shang WU Xian-ming ZHANG Xing-hong QI Guo-rong
College of Chemical and Chemical Engineering, Jishou University, Jishou 416000,China Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
国际会议
北京
英文
187-188
2006-08-03（万方平台首次上网日期，不代表论文的发表时间）