Article ID Journal Published Year Pages File Type
52774 Catalysis Communications 2009 5 Pages PDF
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.

Related Topics
Physical Sciences and Engineering Chemical Engineering Catalysis
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