发展现代化工的伟大功臣──纪念齐格勒逝世２０周年（续）这个现象后来被称为著名的＂镍效应＂。这使齐格勒得到了启发，为此，他立即着手系统地研究其他过渡金属对乙烯插入反应的影响，终于发现，由Ｔｉｃｌ４与ＡｌＥｔ３组成的催化体系，可以使乙烯在非常温和的条件下... Great contribution to the development of modern chemical industry ─ ─ 20th anniversary of the death of Ziegler (cont.) This phenomenon was later known as the famous “nickel effect.” This inspired Ziegler. To do so, he immediately began to systematically study the effect of other transition metals on the ethylene insertion reaction. Finally, it was found that a catalytic system composed of Ticl4 and AlEt3 can make ethylene under very mild conditions. ..