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Catalytic behaviors of SiO2-supported various aluminoxanes as coactivator in MgCl2/DEP/TiCl4–TEA catalysts for propylene polymerization

Paper ID Volume ID Publish Year Pages File Format Full-Text
52774 46886 2009 5 PDF Available
Title
Catalytic behaviors of SiO2-supported various aluminoxanes as coactivator in MgCl2/DEP/TiCl4–TEA catalysts for propylene polymerization
Abstract

The study showed that the use of silica-supported aluminoxanes as coactivator can alter the catalytic behaviors of MgCl2/diethylphthalate (DEP)/TiCl4 catalyst with triethylaluminum (TEA) as an activator for propylene polymerization. It was found that the catalytic activities were ranged between 380 and 760 kg PP/mol.Ti.h within the order of dMMAO/SiO2 > MAO/SiO2 > MMAO/SiO2 > dMMAO > no coactivator > SiO2. The TGA analysis revealed that the strong interaction between aluminoxane compounds and support apparently resulted in a decreased catalytic activity. Based on the polymer microstructure, it indicated that an enhanced activity can be attributed to the increase in active site concentration.

Keywords
Ziegler-Natta catalyst; Methylaluminoxane; Propylene polymerization; Silica support; Interaction
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Catalytic behaviors of SiO2-supported various aluminoxanes as coactivator in MgCl2/DEP/TiCl4–TEA catalysts for propylene polymerization
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 9, 25 April 2009, Pages 1319–1323
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
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