Synthesis of FeAPO-34 molecular sieve under ionothermal condition

Abstract

FeAPO-34 with chabazite (CHA) topology structure was successfully synthesized under ionothermal conditions using 1-ethyl-3-methylimidazoliumchloride (EMIMCl) ionic liquid in the presence of ethylenediamine (EDA). The material was characterised using powder Xray Diffraction (XRD), thermogravimetric analysis (TGA), elemental analyses and solid-state NMR spectroscopy. Incorporation of iron within the covalent framework of the material was confirmed by the presence of broad signals between 1000 and 14000 ppm in the 31P NMR spectrum, corresponding to P(OFe)x(OAl)4–x species.