Preparation of Methylaluminoxane from CO 2 and Me 3 Al
In this contribution, we investigated the key factors for the successful preparation of methylaluminoxane (MAO) from CO 2 and Me 3 Al by analyzing the reaction intermediates and by‐products. The preparation of MAO, which possesses high cocatalytic ability, requires a precise amount of CO 2 feed. GC–...
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Published in | European journal of inorganic chemistry Vol. 2019; no. 18; pp. 2392 - 2395 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
15.05.2019
|
Online Access | Get full text |
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Summary: | In this contribution, we investigated the key factors for the successful preparation of methylaluminoxane (MAO) from CO
2
and Me
3
Al by analyzing the reaction intermediates and by‐products. The preparation of MAO, which possesses high cocatalytic ability, requires a precise amount of CO
2
feed. GC–MS and NMR analysis of the product suggested that
tert
‐butoxyaluminum species was a key intermediate, which guaranteed the involvement of CO
2
in the formation of MAO. The prepared MAO can be applied as a cocatalyst in propylene polymerization using zirconocene, titanocene, nickel, and iron catalysts; its performance as cocatalyst reached to almost the same level as that of the commercially available MAO. Considering that currently olefin monomers require thorough removal of CO
2
before polymerization, this method can open the way to omitting some purification processes in the polyolefin industry. |
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ISSN: | 1434-1948 1099-0682 |
DOI: | 10.1002/ejic.201900356 |