*2.4.5 Ni supported on magnetic nanoparticles (MNPs)*

Ni2+ ion containing 1-methyl-3 (trimethyoxsilylpropyl)imidazolium chloride IL was impregnated on magnetic F3O4 NP. Heck reaction was conducted at 100°C (**Figure 7**). IL catalyst separated by magnet can be reused several times after washing without loss of activity. IL immobilized on magnetic particles is an excellent technology for catalytic reactions and separation technologies with substantive progress. The combination of MNPs and ILS gives a magnetic supported IL, which exhibits the dual properties of IL as well as facile separation by magnetic external field [20].
