Zinc-iron silicate for heterogeneous catalytic ozonation of acrylic acid: efficiency and mechanism.

This research aimed at researching the degradation of acrylic acid (AA) in aqueous solution, by catalytic and non-catalytic ozonation processes performed in a semi-continuous reactor. Zinc-iron silicate was synthesized and characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) analysis, Fourier transformation infrared (FT-IR) and energy dispersive spectrometry (EDS). The characterization studies showed that Fe-Si binary oxide, Zn-Si binary oxide, ZnO and FeO deposits were formed on the surface of poor crystallinity zinc-iron silicate which contained abundant functional groups.