Quaternary onium modified SalenCoXY catalysts for alternating copolymerization of CO2 and propylene oxide: A kinetic study
作者:Xiying Fu、Huanwang Jing
DOI:10.1016/j.jcat.2015.05.030
日期:2015.9
Quaternary onium modulated SalenCoXY (X = Cl, Br, NO3; Y = phenoxy, benzene-1,4-bisoxy, benzene-1,3,5-trisoxy) catalysts incorporating the N,N′-bis(salicylidene)ethylene diaminato(Salen) ligand and quaternary onium units were designed, synthesized and applied to the copolymerization of CO2 and propylene oxide. The impact factors of the axial anion X, the counter anion Y and the property of quaternary
季铵盐调制的SalenCoXY(X = Cl,Br,NO 3 ; Y =苯氧基,苯-1,4-双氧基,苯-1,3,5-三氧基)催化剂,结合了N,N'-双(水杨基)乙二胺设计,合成(Salen)配体和季鎓单元,并将其应用于CO 2和环氧丙烷的共聚。轴向阴离子X,抗衡阴离子Y和季鎓基团的性质的影响因素明显影响PPC的选择性和聚合度。详细的动力学研究以及环加成和共聚的机理已得到记录和讨论。限制性地提出了用于聚合的第二级催化剂。