The activation of MgCl2-supported ziegler-natta catalysts—II: Correlation between activity and structural disorder |
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| Authors: | R. Gerbasi A. Marigo A. Martorana R. Zannetti G.P. Guidetti G. Baruzzi |
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| Affiliation: | 1. Istituto di Chimica Generale ed Inorganica, dell''Università, Via Loredan 4, 35100 Padova Italy;2. Himont Italia, Centro Ricerche, 44100 Ferrara, Italy |
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| Abstract: | The properties have been examined for Ziegler-Natta catalysts comprising TiCl4 (Ti contents 2.0, 3.4 and 4.2%) supported on MgCl2 activated by dry ball-milling up to 250 hr. The samples have been investigated by measurements of catalytic activity in polymerization, of surface area and of some structural parameters related to the crystal disorder introduced by ball-milling. It is shown that the TiCl4 content affects the activation; a relationship has been found between the crystal disorder of the MgCl2 support and the catalytic activity. |
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