A series of immobilized metal ion-containing ionic liquids on silica surfaces (ImmM_IL) were prepared and characterized by EXAFS, UV-vis, TGA, and elemental analysis. The prepared ImmCu(2+_)IL was found to be more active than unsupported [BMiM](2)CUCl4 ionic liquid and reusable for Kharasch addition reaction between CCl4 and styrene. The prepared IrmmPd(2+_)IL was active and reusable for Suzuki cross-coupling between phenylboronic acid and arylhalide. Throughout this study the present catalyst preparation method was confirmed to give efficient and reusable catalysts. (c) 2007 Elsevier B.V. All rights reserved.