关键词: 胶体, 催化剂, 镍络合物, 铝络合物, 多组分体系, 相态, Tyndall效应, 超过滤, 活性中心, 电子显微镜分析

The phase state of the catalytic system of Ni(naph)~2-Al(i-Bu)~3- (BF~3·OEt~2+n-C~8H~1~7OH) was studied. By means of Tyndall effect, electron microscope and ultrafiltration, we found that the catalyst dispersed in butadiene-hydrogasoline solution existed as colloidal particle and the particle sizes was from 1nm to 100nm. The catalyst belonged to highly dispersed polyphase catalytic system. The active center lay on the surface of the colloidal particles. The particles were amorphous. The ratio of components affected the shape of the particles. Under the better ratio we got smaller particles which were dispersed more uniformly and had higher catalytic activity.

Key words: COLLOID, CATALYST, NICKEL COMPLEX, ALUMINIUM COMPLEX, MULTICOMPONENT SYSTEM, PHASE STATE, ACTIVE CENTER, ELECTRON-MICROSCOPIC ANALYSIS