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Catalytic behaviors of SiO2-supported various aluminoxanes as coactivator in MgCl2/DEP/TiCl4–TEA catalysts for propylene polymerization
- Source :
-
Catalysis Communications . Apr2009, Vol. 10 Issue 9, p1319-1323. 5p. - Publication Year :
- 2009
-
Abstract
- 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 760kg 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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 15667367
- Volume :
- 10
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Catalysis Communications
- Publication Type :
- Academic Journal
- Accession number :
- 37575367
- Full Text :
- https://doi.org/10.1016/j.catcom.2009.02.012