ESR studies of the state of Ti3+ and Ti2+ in Ti?Mg catalysts for olefin polymerization |
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| Authors: | V A Poluboyarov V F Anufrienko V A Zakharov S A Sergeev S I Makhtarulin and G D Bukatov |
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| Institution: | (1) Institute of Catalysis, Novosibirsk, USSR |
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| Abstract: | ESR studies have revealed that in Ti–Mg catalysts after interaction with organoaluminium compounds, the Ti3+ ions formed are present mainly as TiCl3 associates. Isolated Ti3+ ions of various types are also detected. Part of titanium ions is in the divalent state and provides an ESR signal after oxidation by water to the trivalent state in the form of Ti3+ ordered by cooperative Jahn-Teller interaction.
              ,    -         ,    Ti3+   TiCl3.   Ti3+ .   Ti3+ -  - .
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