catalytic activity during copolymerization of ethylene and 1-hexene via mixed tio2/sio2-supported mao with rac-et[ind]2zrcl2 metallocene catalyst
;P. Praserthdam;S. Ngamposri;B. Jongsomjit
Journal of ethnopharmacology2005Vol. 10pp. 672-678
151
praserthdam2005moleculescatalytic
Abstract
Activities during ethylene/1-hexene copolymerization were found to increaseusing the mixed titania/silica-supported MAO with rac-Et[Ind]2ZrCl2 metallocenecatalyst. Energy Dispersive X-ray spectorcopy (EDX) indicated that the titania wasapparently located on the outer surface of silica and acted as a spacer to anchor MAO tothe silica surface. IR spectra revealed the Si-O-Ti stretching at 980 cm-1 with low contentof titania. The presence of anchored titania resulted in less steric hindrance and lessinteraction due to supporting effect.