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Ethylene polymerization over a nano-sized silica supported Cp2ZrCl2/MAO catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
53088 46907 2007 5 PDF Available
Title
Ethylene polymerization over a nano-sized silica supported Cp2ZrCl2/MAO catalyst
Abstract

Nano-sized and micro-sized silica particles were used to support Cp2ZrCl2/MAO catalyst for ethylene polymerization. Nano-sized catalyst exhibited much better ethylene polymerization activity than micro-sized catalyst. At the optimum temperature of 60 °C, nano-sized catalyst’s activity was 4.35 times the micro-sized catalyst’s activity, which was attributed to the large specific external surface area, the absence of internal diffusion resistance, and the better active site dispersion for the nano-sized catalyst. Polymers produced were characterized with SEM, XRD, DSC, and densimeter. SEM indicated that the resulting polymer morphology contained discrete tiny particles and thin long fiberous interlamellar links.

Keywords
Supported metallocene/MAO catalyst; Ethylene polymerization; Nano silica particles; Polyethylene
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Ethylene polymerization over a nano-sized silica supported Cp2ZrCl2/MAO catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 8, August 2007, Pages 1209–1213
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us