کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9614780 | 48544 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of alkoxysilanes formed in situ on the properties of Ziegler-Natta catalysts for olefin polymerisation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of alkoxysilanes formed in situ on the properties of Ziegler-Natta catalysts for olefin polymerisation Effect of alkoxysilanes formed in situ on the properties of Ziegler-Natta catalysts for olefin polymerisation](/preview/png/9614780.png)
چکیده انگلیسی
TiCl4/MgCl2-alkoxysilane-based catalysts for olefin polymerisation were prepared by supporting TiCl4 on recrystallised MgCl2 containing grafted alkoxysilane. The alkoxysilanes were generated in situ during the recrystallisation of MgCl2 with SiCl4 from alcoholic solutions. The effect of the nature of the alkoxysilane on the catalytic performance and polymer properties was studied by using different alcohols as solvent. The results of the polymerisation of ethylene and propylene showed that the activities, molecular weights and isotacticities depended strongly on the structure of the alkoxysilane (see figure), which possibly acts as an internal electron donor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 231, Issues 1â2, 20 April 2005, Pages 123-127
Journal: Journal of Molecular Catalysis A: Chemical - Volume 231, Issues 1â2, 20 April 2005, Pages 123-127
نویسندگان
J. Chirinos, J. Fernández, D. Pérez, T. Rajmankina, A. Parada,