Synthesis and Characterization of Novel Cross-linked Magnetic Ionic Liquid Nanoporous Network and Their Application for immobilization of metal Nanoparticle in the Aerobic Oxidation of Alcohols reactions

In this work, we have concentrated on design and synthesis of a novel catalytic system which is consisted of a Cross-linked Magnetic Ionic Liquid Nanoporous Network. The magnetic Fe3O4@SiO2 with a core-shell structure and a narrow pore size distribution was synthesized by employing the microemulsion method. Magnetic material grafted with polyionic liquids was successfully prepared by oligomerization of ionic liquid units on the surface of mercaptopropyl-modified silica-coated Fe3O4, and well characterized by several model technologies [1]. This magnetic material was applied as support to prepare immobilized perruthenate ions (RuO4-). The catalytic performance of the as-prepared magnetic catalyst has been investigated in the aerobic oxidation of different alcohols such as benzylic, aliphatic, cyclic and heteroatom-containing alcohols with molecular oxygen as the sole oxidant and toluene as the solvent [2]. The investigation has shown that these obtained materials acted as an efficient, stable and recyclable heterogeneous catalyst for the oxidation of alcohols to aldehydes (scheme1).