Characterization of MAO‐Modified Silicas for Ethylene Polymerization. Issue 6 (27th July 2013)

• Record Type: Journal Article
• Authors: Mortazavi, Mohamad Mehdi; Ahmadjo, Saeid; Santos, Joao Henrique Zimnoch Dos; Arabi, Hassan; Nekoomanesh, Mehdi; Zohuri, Gholam Hossein; Brambilla, Rodrigo; Galland, Griselda Barrera
• Is Part Of: Journal of applied polymer science. Volume 130:Issue 6(2013:Dec. 15)
• Page Start: 4568
• Page End: 4575
• Publication Date: 2013-07-27
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.39737
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>A series of methylaluminoxane (MAO)‐modified PQ and EP 12 silicas, calcined at 110, 250, and 450°C, were prepared. The resulting MAO‐modified supports were characterized by a set of complementary techniques: Fourier transform infrared spectroscopy (FT‐IR), scanning electron microscopy‐energy dispersive X‐ray spectroscopy (SEM‐EDX), small angle X‐ray scattering (SAXS), and thermal gravimetric analysis (TGA). The Al/Si ratios of the MAO‐modified PQ and EP12 silicas were in the ranges of 0.19–0.27 wt % and 0.17–0.30 wt %, respectively. MAO‐modified silicas were used in the polymerization of ethylene using an Et₂IndZrCl₂ catalyst. The MAO‐modified PQ silica showed higher activity in comparison to the MAO‐modified EP12. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 4568–4575, 2013</p> </abstract>