Title : ( Characterization of MAO‐Modified Silicas for Ethylene Polymerization )
Authors: Mohamad Mehdi Mortazavi, Saeid Ahmadjo, Joao Henrique Zimnoch Dos Santos, Hassan Arabi, Mehdi Nekoomanesh, Gholam Hossein Zohuri, Rodrigo Brambilla, Griselda Barrera Galland , M. M. Mortazavi, S. Ahmadjo, J. H. Z. D. Santos, H. Arabi, M. Nekomanesh, G. H. Zohuri. R. Brambilla, G. B. Galland , Mohamad Mehdi Mortazavi , Saeid Ahmadjo , Joao Henrique Zimnoch Dos Santos , Hassan Arabi , Mehdi Nekoomanesh , Gholamhossein Zohuri , Rodrigo Brambilla , Griselda Barrera Galland ,
Full TextAbstract
ABSTRACT: 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.
Keywords
KEYWORDS: polyolefins; grafting; catalysts
@article{paperid:1037184,
author = {Mohamad Mehdi Mortazavi, Saeid Ahmadjo, Joao Henrique Zimnoch Dos Santos, Hassan Arabi, Mehdi Nekoomanesh, Gholam Hossein Zohuri, Rodrigo Brambilla, Griselda Barrera Galland and M. M. Mortazavi, S. Ahmadjo, J. H. Z. D. Santos, H. Arabi, M. Nekomanesh, G. H. Zohuri. R. Brambilla, G. B. Galland and Mohamad Mehdi Mortazavi and Saeid Ahmadjo and Joao Henrique Zimnoch Dos Santos and Hassan Arabi and Mehdi Nekoomanesh and Zohuri, Gholamhossein and Rodrigo Brambilla and Griselda Barrera Galland},
title = {Characterization of MAO‐Modified Silicas for Ethylene Polymerization},
journal = {Journal of Applied Polymer Science},
year = {2013},
volume = {130},
number = {6},
month = {July},
issn = {0021-8995},
pages = {4568--4575},
numpages = {7},
keywords = {KEYWORDS: polyolefins; grafting; catalysts},
}
%0 Journal Article
%T Characterization of MAO‐Modified Silicas for Ethylene Polymerization
%A Mohamad Mehdi Mortazavi, Saeid Ahmadjo, Joao Henrique Zimnoch Dos Santos, Hassan Arabi, Mehdi Nekoomanesh, Gholam Hossein Zohuri, Rodrigo Brambilla, Griselda Barrera Galland
%A M. M. Mortazavi, S. Ahmadjo, J. H. Z. D. Santos, H. Arabi, M. Nekomanesh, G. H. Zohuri. R. Brambilla, G. B. Galland
%A Mohamad Mehdi Mortazavi
%A Saeid Ahmadjo
%A Joao Henrique Zimnoch Dos Santos
%A Hassan Arabi
%A Mehdi Nekoomanesh
%A Zohuri, Gholamhossein
%A Rodrigo Brambilla
%A Griselda Barrera Galland
%J Journal of Applied Polymer Science
%@ 0021-8995
%D 2013
