A heteropolyacid-based ionic liquid immobilized onto Fe3O4/SiO2/Salen/Mn as an environmentally friendly catalyst for synthesis of cyclic carbonate

Abstract

Magnetite-polyoxometalate hybrid nanomaterials, Fe 3 O 4 /SiO 2 /Salen/ Mn/IL/HPW (MNPs-HPW), was prepared by grafting of H 3 PW 12 O 40 on the ionic liquid-functionalized Fe 3 O 4 magnetite nanoparticles. This catalyst is a recoverable catalyst for the one-pot synthesis of cyclic carbonate derivatives in high to excellent yield under solvent-free conditions. The MNPs-HPW catalyst was characterized via Fourier transform infrared spectroscopy, X-ray diffraction, thermal gravimetric analysis, transmission electron microscopy, and a vibrating sample magnetometer. Moreover, the catalyst could be easily recovered by magnetic separation and recycled for ten times without significant loss of its catalytic activity.

Synthesis of cyclic carbonates from CO2 cycloaddition to bio-based epoxides and glycerol: an overview of recent development

“…Numerous heterogeneous systems used to synthesise GC from Gly are derived from ILs. [114][115][116][117][118][119] The reaction occurs in two steps: rstly, the nucleophilic anion opens the oxirane ring, and secondly, an IL forms hydrogen bonds between the acidic C2 proton of the imidazolium ring and the oxirane ring.…”

Recent progress in the catalytic transformation of carbon dioxide into biosourced organic carbonates

“…For example, the use of heterogeneous catalysts (Scheme 6) allows for easy catalyst recovery after some postsynthetic treatment such as filtration or product extraction. Most of these heterogeneous systems for GC synthesis from Gly are derived from ionic liquids (ILs), [76][77][78][79][80][81][82] which accelerate the reaction in two ways.…”

Catalizadores magnéticos basados en Óxidos de Hierro: Síntesis, Propiedades y Aplicaciones

“…Hasta ahora se han diseñado un gran número de catalizadores magnéticos que involucran recubrimientos con polímeros [19], sustancias organometálicas [20] y surfactantes [21] y variadas especies activas como metales [22], enzimas [23] y ácidos orgánicos/inorgánicos [24]. Así mismo, se han estudiado diferentes métodos para inmovilizar el catalizador considerando las características químicas de cada especie.…”