摘要
研究了聚（苯乙烯－丙烯酰胺）（ＰＳＡＣ）载体－氯化钕配合物催化丁二烯聚合的规律，考察了ＰＳＡＣ载体及ＰＳＡＣ·ＮｄＣｌ３配合物的组成与催化活性间的关系．ＰＳＡＣ载体的收率不影响配合物的活性，而配合物的活性却随ＰＳＡＣ载体中Ｃ（Ｏ）ＮＨ２功能团含量的高低而改变，含量低时活性高．
The NdCl 3 complex supported on poly(styrene acrylamide)(PSAC) has been prepared and the polymerization of butadiene(Bd) in the presence of a new binary catalyst system composed of this complex and Al( i Bu) 3 has been studied. PSAC·NdCl 3 complex is characterized by its high catalytic activity. Under certain polymerization condition, the catalytic activity increases with the increasing of n Nd / m Bd and n Al / n Nd values, values the intrinsic viscosity of the obtained polybutadiene decreases. On the other hand, the catalytic activity of PSAC·NdCl 3 complex is not relative to PSAC yield and is influenced by the composition of PSAC. The activity of PSAC·NdCl 3 complex with higher content of C(O)NH 2 is not as good as that with lower content. The microstructure content of the polybutadiene is not influenced by the composition of PSAC and PSAC·NdCl 3 complex. The cis 1,4 content of polybutadiene is more than 98%.
出处
《催化学报》
CSCD
北大核心
1996年第3期245-248,共4页
基金
国家自然科学基金
关键词
丁二烯
钕
配合物
稀土
催化剂
Butadiene
Stereospecific polymerization
Polymer support
Neodymium complex
Rare earth catalyst
