|
|
Journal of Petroleum Science and Technology، جلد ۴، شماره ۱، صفحات ۲۱-۲۹
|
|
|
| عنوان فارسی |
|
|
| چکیده فارسی مقاله |
|
|
| کلیدواژه‌های فارسی مقاله |
|
|
| عنوان انگلیسی |
IN SITU SILICA SUPPORTED METALLOCENE CATALYSTS FOR ETHYLENE POLYMERIZATION |
|
| چکیده انگلیسی مقاله |
Bis(2-R-ind)ZrCl2 (R: H or phenyl) was supported on different types of silica by in situ impregnation method and used for ethylene polymerization. In this method, the step of catalyst loading on support was eliminated and common alkyl aluminum (triisobutylaluminum, TiBA) cocatalyst was used instead of expensive methyl aluminiumoxane (MAO) cocatalyst in the polymerization. The effect of surface area of silica on the performance of the supported catalysts using three different types of silica including EP12 (390 m2/gr.), PQ3060 (570 m2/gr.) and MCM-41 (1100 m2/gr.) was investigated. The surface area had a more critical role relative to other characteristics of the support in the performance of catalysts. By using MCM-41 as support, the kinetic stability was enhanced. The activity of the supported catalysts was increased by increasing the surface area of silica in the order of MCM-41 > PQ3060 > EP12. The morphology of polymer particles was improved and reactor fouling was eliminated by supporting the catalyst. |
|
| کلیدواژه‌های انگلیسی مقاله |
|
|
| نویسندگان مقاله |
سعید احمدجو |
iran polymer and petrochemical institute
حسن عربی |
iran polymer and petrochemical institute
غلامحسین ظهوری | gholam hossein
ferdowsi university of mashhad
سازمان اصلی تایید شده: دانشگاه فردوسی (Ferdowsi university)
غلامرضا نجابت | gholam reza
iran polymer and petrochemical institute
مجتبی امیدوار |
iran polymer and petrochemical institute
مصطفی احمدی |
iran polymer and petrochemical institute
محمد مهدی مرتضوی | mohamad mehdi
iran polymer and petrochemical institute
|
|
| نشانی اینترنتی |
http://jpst.ripi.ir/article_331_59.html |
| فایل مقاله |
فایلی برای مقاله ذخیره نشده است |
| کد مقاله (doi) |
|
| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
|
| نوع مقاله منتشر شده |
|
|
|
|
برگشت به:
صفحه اول پایگاه |
نسخه مرتبط |
نشریه مرتبط |
فهرست نشریات
|