Ionic liquids—weakly-coordinating solvents for the biphasic ethylene oligomerization to α-olefins using cationic Ni-complexes

Ionic Liquids as Solvents and/or Catalysts in Polymerization

“…The first report on ILs in the homogeneous oligomerization [80] and polymerization reactions [81,82] Ethylene to higher a-olefins [86,87] [91] (continued) Copolymerization of styrene and CO [98] Wasserscheid et al in biphasic oligomerization of ethylene to higher olefins with cationic nickel complexes in ILs of the type [RMIM] [PF 6 ]. The reactivity and selectivity in ILs were noticed to be better compared to conventional organic solvents [86][87][88]. It was observed that propene and 1-butene dimerizations with Ni(II) heterocyclic complexes were inactive or sparingly active in toluene.…”

Adsorption performances of the reusable ionic liquid–iron coordination complex (ILICC) adsorbent to remove reactive dyes

“…It is *Corresponding authors. proved that ionic liquid-metal coordination complexes can be prepared through coordination interaction between cation of ionic liquid coordinates and metal ions [28][29][30][31][32], and have been successfully employed to catalyze the synthesis reaction [33,34]. Up to now, ionic liquid-metal coordination complexes have not been applied to the field of solid-phase adsorption.…”

Ionic Liquids in Biphasic Ethylene Polymerisation

“…In particular, the polar but weakly coordinating character of ionic liquids enables them to be applied as mediums in catalysis, to immobilize various kinds of catalyst precursors which contain transition metals. Recently, ionic liquids have also been viewed as a "green" replacement to conventional organic solvents (Olivier-Bourbigou, 2002;Wasserscheid et al, 2004;Wilkes, 2004;Welton, 2004;Kubisa, 2004;Jain, 2005 ;Parvulescu et al, 2007;Chowdhury et al, 2007;Ochędzan-Siodłak, 2009). Amongst many reactions carried out in an ionic liquids environment, dimerisation and oligomerisation reactions catalyzed by nickel complexes should be noted.…”