研究了Ni(naph)_2—Al(i-Bu)_3—(BF_3·OEt_2+n-C_8H_(17)OH)催化体系的相态.通过Tyndall效应、电镜观察和超过滤实验,证明镍催化体系在溶有丁二烯的加氢汽油中以小颗粒分散,粒径在1～100nm之间,为胶体催化剂,属高度分散的多相催化体系.催化剂的活性中心位于胶粒表面,催化剂颗粒是无定形的.催化剂各组分配比影响胶粒形态,其中以较佳配比所得到的催化剂颗粒较小、分布均匀,催化丁二烯聚合反应活性高. The phase state of Ni (naph) _2-Al (i-Bu) _3- (BF_3 · OEt_2 + n-C_8H_ (17) OH) was studied by Tyndall effect, electron microscope observation and ultrafiltration experiments. In the dissolved hydrogenated gasoline butadiene small particles dispersed, particle size between 1 ~ 100nm, a colloidal catalyst, is a highly dispersed heterogeneous catalytic system. The active site of the catalyst is located on the surface of the particles, the catalyst particles are Amorphous, the ratio of each component of the catalyst affects the morphology of the colloidal particles, and the catalyst particles obtained by the better proportioning are smaller and evenly distributed, and the polymerization activity of the butadiene is high.