Immobilization of molecular catalysts in supported ionic liquid phases.
In a supported ionic liquid phase (SILP) catalyst system, an ionic liquid (IL) film is immobilized on a high-surface area porous solid and a homogeneous catalyst is dissolved in this supported IL layer, thereby combining the attractive features of homogeneous catalysts with the benefits of heterogeneous catalysts. In this review reliable strategies for the immobilization of molecular catalysts in SILPs are surveyed. In the first part, general aspects concerning the application of SILP catalysts are presented, focusing on the type of catalyst, support, ionic liquid and reaction conditions. Secondly, organic reactions in which SILP technology is applied to improve the performance of homogeneous transition-metal catalysts are presented: hydroformylation, metathesis reactions, carbonylation, hydrogenation, hydroamination, coupling reactions and asymmetric reactions.
Van Doorslaer
Charlie
C
Centre for Surface Chemistry and Catalysis, Department of Microbial and Molecular Systems, K.U.Leuven, Kasteelpark Arenberg 23, box 2461, 3001, Leuven, Belgium.
Wahlen
Joos
J
Mertens
Pascal
P
Binnemans
Koen
K
De Vos
Dirk
D