Cobalt-β-diimine complexes for ethylene oligomerization

This work describes the synthesis of cobalt-β-diimine complexes as well as their application as ethylene oligomerization catalyst precursors. The ligands differ from each other by substituents on the aromatic rings. The catalytic precursors were tested in ethylene oligomerization, using EASC (Ethyla...

Full description

Saved in:
Bibliographic Details
Published in:Catalysis communications 2017-11, Vol.101, p.85-88
Main Authors: Caovilla, Marcela, Thiele, Daniel, de Souza, Roberto F., Gregório, José R., Bernardo-Gusmão, Katia
Format: Article
Language:English
Subjects:
Cobalt
Ethylene
Oligomerization
Schiff bases
β-Diimine
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work describes the synthesis of cobalt-β-diimine complexes as well as their application as ethylene oligomerization catalyst precursors. The ligands differ from each other by substituents on the aromatic rings. The catalytic precursors were tested in ethylene oligomerization, using EASC (Ethylaluminium sesquichloride, Et2Al2Cl3) as co-catalyst, and toluene as solvent and displayed TOF in the range of 0.8 to 34s−1. The catalytic systems were selective in the C4-C6 fraction, attaining 100% selectivity in C4. It was observed that the ligands nature strongly influence the catalytic activity. [Display omitted] •A new family of Co-β-diimine complexes was synthetized.•Co-β-diimine complexes displayed very high activities in ethylene oligomerization.•Complexes produced mainly the C4-C6 fraction.•Ligands strongly influence the activity of each catalytic precursor.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2017.08.002