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MICROSCOPY STUDY OF ZIEGLER-NATTA CATALYST: A TEST OF TEM (TRANSMISSION ELECTRON MICROSCOPY)

Journal: International journal of ecosystems and ecology science (IJEES) (Vol.4, No. 3)

Publication Date:

Authors : ; ; ; ;

Page : 329-332

Keywords : Ziegler-Natta catalyst; planar model; microscopy techniques;

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Abstract

Planar Ziegler-Natta model catalysts are used to establish a preparation which resembles the industrial counterpart and to be active towards ethylene and propylene polymerization and most prominently to contribute in elucidation of MgCl2 crystal structure. We set a high value on the planar model catalyst as the latter offers the unique possibility of applying the spincoat-impregnation followed by highly favorable opportunities for surface characterization and imaging. In this context, construction of a special TEM grid has enabled TEM analysis on flat silicon/silica wafers. The silica TEM substrate is composed of a silica window suspended in a silicon framework. The silica window permits the transmission of the electron beam. In other words TEM grids not only facilitate imaging on a flat model catalyst but they can serve as a catalytic support as well. The aim is to image by TEM, MgCl2 crystals produced by Ostwald method on a TEM grid and compared them with the other planar model i.e. silica surface (no grids included on the flat surface).

Last modified: 2014-07-07 12:57:41