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Direct observation of MgCl 2 ‐supported Ziegler catalysts by high resolution transmission electron microscopy
Author(s) -
Mori Hideharu,
Sawada Masato,
Higuchi Tomohiro,
Hasebe Koichi,
Otsuka Nobuo,
Terano Minoru
Publication year - 1999
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(19990501)20:5<245::aid-marc245>3.0.co;2-r
Subject(s) - transmission electron microscopy , catalysis , amorphous solid , materials science , electron microscope , crystal structure , high resolution transmission electron microscopy , surface structure , chemical engineering , crystallography , resolution (logic) , nanotechnology , chemistry , optics , organic chemistry , physics , engineering , artificial intelligence , computer science
The surface atomic structure of MgCl 2 crystalline particles and MgCl 2 ‐supported Ziegler catalysts was observed by means of high resolution transmission electron microscopy. Step‐terrace surface structures, characteristic of the structure of the MgCl 2 crystal, are found in the observed images of MgCl 2 particles. The observation of the structure of MgCl 2 ‐supported Ziegler catalysts shows that the MgCl 2 crystals are severely deformed by the processes of catalyst preparation. Due to the preparation procedure used the structure of the catalyst changes from crystalline to amorphous.