Effective activation of metallocene catalysts with supported-type Ph3CClO4 in ethylene polymerization
2000; Wiley; Volume: 21; Issue: 11 Linguagem: Inglês
10.1002/1521-3927(20000701)21
ISSN1521-3927
AutoresN. Kishi, Cheol‐Hee Ahn, Jizhu Jin, Toshiya Uozumi, Tsuneji Sano, Kazuo Soga,
Tópico(s)Inorganic and Organometallic Chemistry
ResumoMacromolecular Rapid CommunicationsVolume 21, Issue 11 p. 775-778 Communication Effective activation of metallocene catalysts with supported-type Ph3CClO4 in ethylene polymerization Naoya Kishi, Naoya Kishi School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this authorCheol-Hee Ahn, Cheol-Hee Ahn School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this authorJizhu Jin, Jizhu Jin School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this authorToshiya Uozumi, Toshiya UozumiSearch for more papers by this authorTsuneji Sano, Tsuneji Sano School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this authorKazuo Soga, Kazuo Soga School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this author Naoya Kishi, Naoya Kishi School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this authorCheol-Hee Ahn, Cheol-Hee Ahn School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this authorJizhu Jin, Jizhu Jin School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this authorToshiya Uozumi, Toshiya UozumiSearch for more papers by this authorTsuneji Sano, Tsuneji Sano School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this authorKazuo Soga, Kazuo Soga School of Materials Science Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Tatsunokuchi-machi, Nomi-gun, Ishikawa, 923-1292, JapanSearch for more papers by this author First published: 19 July 2000 https://doi.org/10.1002/1521-3927(20000701)21:11 3.0.CO;2-CCitations: 3AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Supported type cocatalysts using triphenylcarbenium perchlorate (Ph3CClO4) were prepared by impregnation on inorganic carrier, magnesium chloride (MgCl2) and applied to ethylene polymerizations with rac-Et[Ind]2ZrCl2. Homogeneous polymerizations with Ph3CClO4 were also carried out for comparison. The activity of homogeneous polymerization was much lower than that obtained with methylaluminoxane (MAO). On the other hand, rac-Et[Ind]2ZrCl2 activated by the supported type Ph3CClO4/MgCl2 system displayed high activity comparable to that obtained with MAO. From the results of fractionation and polymerization of the rac-Et[Ind]2ZrCl2-Ph3CClO4/MgCl2 catalyst system, it was found that the increased activity mainly came from the active species in the supernatant part. UV-vis spectroscopic measurements combined with ICP analysis indicate that the active species in the supernatant fraction are composed of a stoichiometric amount of perchlorate and metallocene catalyst. Citing Literature Volume21, Issue11July 2000Pages 775-778 RelatedInformation
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