Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (8): 1297.
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XIA Shao-Wu, XIA Shu-Wei, ZHAO Ping, ZHANG Ping
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Abstract: This paper covered the phase of molybdenum catalyst system with hydrogenated gasoline as solvent,MoCl3(OC8H17)2 (i-Bu)2AlO-PhCH3 (m) as the catalyst.By means of Tyndall effect and electromicroscope observation, we found molybdenum was a colloid catalyst.The colloid particles were mainly congregated by MoCl3(OC8H17)2,which reacted with (i-Bu)2 AlOPhCH3(m) at the same time.In order to examine where the active centers of catalytic polyrnerization were, an ultrafiltration experiment was done by a pored filter.The result shows that the active centers existed on the surface of the colloid particles.So the whole catalytic polymerization was a heterogeneous catalytic reaction.The state of colloid particles was hardly influenced by ageing.This kind of catalyst system was a comparatively stable colloid system.
Key words: Colloid catalyst, Tyndall effect, Ageing
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XIA Shao-Wu, XIA Shu-Wei, ZHAO Ping, ZHANG Ping. Studies on Phase of Catalyst for Butadiene Polymerization over Molybdenum Catalyst System[J]. Chem. J. Chinese Universities, 1996, 17(8): 1297.
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http://www.cjcu.jlu.edu.cn/EN/Y1996/V17/I8/1297
