Catalysis Letters

, Volume 138, Issue 1–2, pp 50–55 | Cite as

Oligomerization of Ethylene Catalyzed by Iron and Cobalt in Organoaluminate Dialkylimidazolium Ionic Liquids



Cationic iron and cobalt acetonitrile cationic complexes were prepared and used as catalyst precursors in catalytic ethylene oligomerization. The effects of temperature and the nature and effects of the co-catalysts were evaluated. The iron and cobalt catalysts are less active, giving turnover frequencies of 20,000 to 30,000 h−1 while the corresponding nickel analogs exhibit turnover frequencies of 215,000 h−1. The iron and cobalt catalysts were more selective for the synthesis of 1-butene, especially at lower temperatures, compared to the nickel catalyst.

Graphical Abstract


Ethylene Oligomerization Iron Cobalt Organoaluminate Ionic liquid 



The authors thank to CNPq for financial support of this work.

Supplementary material

10562_2010_371_MOESM1_ESM.doc (47 kb)
(DOC 47 kb)


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.Institute of ChemistryUFRGSPorto AlegreBrazil

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