Synthesis and Catalytic Properties of Iron Oxides in the Reaction of Low-Temperature Ozone Decomposition

T.L. Rakitskayaa, A.S. Trubaa,b, A.A. Ennan b, V.N. Baumer c and V.Y. Volkova a aFaculty of Chemistry, Odessa I.I. Mechnikov National University, 2, Dvoryanskaya Str., 65082, Odessa, Ukraine bPhysico-Chemical Institute of Environment and Human' Protection, 3, Preobrazhenskaya Str., 65086, Odessa, Ukraine cSTC `Institute for Single Crystals' NAS of Ukraine, 60 Nauky ave., 61001, Kharkiv, Ukraine

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Two sets of iron oxide samples were synthesized applying different iron(III) precursors (FeCl3 and Fe2(SO4)3) and calcination temperature (200, 300, and 500°C). The samples were characterized by powder X-ray analysis and the Fourier transform: infrared spectroscopy. Depending on the synthesis conditions, samples of iron oxides with different phase composition were obtained: polyphase (α -Fe2O3, γ -Fe2O3, Fe3O4, and α -FeO(OH)) and monophase (γ -Fe2O3 or α -Fe2O3) ones. For the samples of homogeneous composition, it has been found that the activity of γ -Fe2O3 in the reaction of ozone decomposition at ozone concentration in gaseous phase of 1 mg/m3 is much higher than the activity of α -Fe2O3.

DOI: 10.12693/APhysPolA.133.1065 topics: iron oxides, synthesis, thermal treatment, ozone decomposition, catalytic activity