A Hyper Cross-Linked Imidazolium-Based Magnetic Ionic Nanomaterial: As an EfficientSupport for Acid-Catalyzed Esterification

A new magnetic ionic nanomaterial (MIN) comprising core-shell magnetic nanoparticles as a supportand immobilized imidazolium ionic liquid linkers was prepared via a two-step micro emulsion and radicalpolymerization method. The material demonstrated a combination of interesting features such as threedimensionalnetwork structure, high thermal decomposition temperature, good surface area, high ionicdensity, high organic content and flexibility, excellent dispersibility and easy separation from the reactionmedium using external magnet. Subsequently, by the anion exchange method, the sulfonic acid anionstabilized on the support to prepare a solid acid catalyst. Solid acid catalyst was used in the direct esterificationreaction alcohols and acetic acid. The catalyst demonstrated excellent catalytic activity, stability, dispersibility,reusability and easily separation of reaction medium in esterification reaction.

کلیدواژه ها:

Ionic liquids ، Magnetic nanoparticles ، Acid catalyst ، Esterification reaction