کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
68782 48523 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Binuclear titanocenes linked by the bridge combination of rigid and flexible segment: Synthesis and their use as catalysts for ethylene polymerization
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Binuclear titanocenes linked by the bridge combination of rigid and flexible segment: Synthesis and their use as catalysts for ethylene polymerization
چکیده انگلیسی

Five novel binuclear titanocenes (CpTiCl2)2[(C5H4)CH2(p-C6H4)O(CH2)nO(C6H4-p)CH2(C5H4)] (n = 2–6) (16–20) with the bridge combination of rigid and flexible segment were synthesized and characterized. In the presence of methylaluminoxane (MAO), the behaviors of these complexes toward ethylene polymerization were investigated. The results show that their catalytic behaviors are highly dependent on the length of flexible segment and polymerization conditions. With the length of flexible segment becoming longer, the catalytic activity increases, whereas the molecular weight (MW) of the produced polyethylene (PE) decreases. In addition, the longer flexible segment is favorable to produce PE with broader molecular weight distribution (MWD).

Five novel binuclear titanocenes (CpTiCl2)2[(C5H4)CH2(p-C6H4)O(CH2)nO(C6H4-p)–CH2(C5H4)] (n = 2–6) (16–20) with the bridge combination of rigid and flexible segment were synthesized. In the presence of methylaluminoxane, the behaviors of these complexes toward ethylene polymerization were investigated. The results show that their catalytic behaviors are highly dependent on the length of flexible segment and polymerization conditions.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 267, Issues 1–2, 18 April 2007, Pages 86–91
نویسندگان
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