Lee, EK Jung, KD Joo, OS Shul, YG 2024-01-21T05:33:00Z 2024-01-21T05:33:00Z 2021-09-03 2005-02-20 0253-2964 https://pubs.kist.re.kr/handle/201004/136728 The Fe/MgO catalysts with different Fe loadings (1, 4, 6, 15 and 30 wt% Fe) were prepared by a wet impregnation with iron nitrate as precursor. All of the catalysts were characterized by BET surface analyzer, X-ray diffraction (XRD), temperature-programmed reduction (TPR), and X-ray photoelectron spectroscopy (XPS). The maximum removal capacity of H2S was obtained with 15 wt% Fe/MgO catalyst which had the highest BET surface area among the measured catalysts. XRD of Fe/MgO catalysts showed that well dispersed Fe particles could be present on Fe/MgO with Fe loadings below 15 wt%. The crystallites of bulk alpha-Fe2O3 became evident on 30 wt% Fe/MgO, which were confirmed by XRD. TPR profiles showed that the reducibility of Fe/MgO was strongly related to the loaded amounts of Fe on MgO support. Therefore, the highest removal efficiency of H,S in wet oxidation could be ascribed to a good dispersion and high reducibility of Fe/MgO catalyst. XPS studies indicated that the H,S oxidation with Fe/MgO could proceed via the redox mechanism (Fe3+ <-> Fe2+). English WILEY-V C H VERLAG GMBH H2S DEHYDROGENATION PROPANE XPS Selective oxidation of hydrogen sulfide to elemental sulfur with Fe/MgO catalysts in a slurry reactor Article 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.26, no.2, pp.281 - 284 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 26 2 281 284 scie scopus kci ART001191696 000227625800021 2-s2.0-14844318515 Chemistry, Multidisciplinary Chemistry Article H2S DEHYDROGENATION PROPANE XPS Fe/MgO catalyst wet oxidation H2S redox mechanism