Supported dichlorobis(3-hydroxi-2-methyl-4-pyrone)Ti(IV) catalysts: Evaluation on ethylene polymerization

• Published in: Journal of molecular catalysis. A, Chemical Vol. 240; no. 1; pp. 61 - 66
• Main Authors: Greco, Paula P., Brambilla, Rodrigo, Einloft, Sandra, Stedile, Fernanda C., Galland, Griselda. B., Santos, João H.Z. dos, de S. Basso, Nara. R.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 03.10.2005; Elsevier
• Subjects: Applied sciences; Exact sciences and technology; Non-metallocene catalyst; Organic polymers; Physicochemistry of polymers; Polyethylene; Polymerization; Preparation, kinetics, thermodynamics, mechanism and catalysts; Supported catalysts; Titanium alkoxide; Supported catalysts; Polymerization; Polyethylene; Titanium alkoxide; Non-metallocene catalyst; Titanium IV Complexes; Complex catalyst polymerization; Complex catalyst; Experimental study; Supported catalyst; Olefin polymer; Chloro complex; Aluminium Organic compounds; Catalyst activity
• ISSN: 1381-1169; 1873-314X
• DOI: 10.1016/j.molcata.2005.06.031

Titanium complex bearing 3-hydroxi-2-methyl-4-pyrone as ligand was grafted on different inorganic carriers, namely SiO 2, MAO-modified silica, MCM-41, Al 2O 3, ZrO 2 and MgO. The resulting supported catalysts were shown to be active in ethylene polymerization using methylaluminoxane (MAO) as cocatalyst, most of them being even more active that the homogeneous complex. ▪ Dichlorobis(3-hydroxi-2-methyl-4-pyrone)Ti(IV) complex was grafted on different inorganic supports, namely different kinds of SiO 2, MAO-modified silica, MCM-41, Al 2O 3, ZrO 2 and MgO. The resulting supported catalysts were shown to be active in ethylene polymerization using methylaluminoxane (MAO) as cocatalyst, most of them being even more active that the homogeneous complex. The highest catalyst activities were observed for the Ti complex supported on SiO 2 948 activated at 450 °C, MCM-41 and Al 2O 3.