Support effects in catalytic wet oxidation of H2S to sulfur on supported iron oxide catalysts

Eun Ku Lee; Kwang Deog Jung; Oh Shim Joo; Yong Gun Shul

doi:10.1016/j.apcata.2004.12.034

Support effects in catalytic wet oxidation of H₂S to sulfur on supported iron oxide catalysts

Eun Ku Lee, Kwang Deog Jung, Oh Shim Joo, Yong Gun Shul

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

Iron oxide catalysts supported on MgO, Al₂O₃, SiO₂ and ZrO₂ were prepared by an impregnation method. They were characterized by BET surface analysis, X-ray diffraction (XRD), temperature-programmed reduction (TPR) and Mössbauer spectroscopy. Fe/MgO catalyst shows the highest H₂S removal capacity in wet oxidation at room temperature. Both the XRD and the TPR analyses of the catalysts indicate that H₂S removal capacity correlates with the dispersion of iron oxide on supports. Mössbauer spectroscopy shows that four kinds of Fe³⁺ species are present in the supported iron oxide catalysts: Two highly dispersed species, Fe³⁺ oxide clusters, and α-Fe₂O₃ particles. Two highly dispersed species, Fe³⁺ cation and MgFe₂O₄, are present in Fe/MgO. Fe³⁺ oxide clusters and α-Fe₂O₃ crystals are evident in both Fe/SiO₂ and Fe/ZrO₂. α-Fe₂O₃ crystals are only observed in Fe/Al₂O₃.

Original language	English
Pages (from-to)	1-4
Number of pages	4
Journal	Applied Catalysis A: General
Volume	284
Issue number	1-2
DOIs	https://doi.org/10.1016/j.apcata.2004.12.034
Publication status	Published - 2005 Apr 28

All Science Journal Classification (ASJC) codes

Catalysis
Process Chemistry and Technology

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10.1016/j.apcata.2004.12.034

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title = "Support effects in catalytic wet oxidation of H2S to sulfur on supported iron oxide catalysts",

abstract = "Iron oxide catalysts supported on MgO, Al2O3, SiO2 and ZrO2 were prepared by an impregnation method. They were characterized by BET surface analysis, X-ray diffraction (XRD), temperature-programmed reduction (TPR) and M{\"o}ssbauer spectroscopy. Fe/MgO catalyst shows the highest H2S removal capacity in wet oxidation at room temperature. Both the XRD and the TPR analyses of the catalysts indicate that H2S removal capacity correlates with the dispersion of iron oxide on supports. M{\"o}ssbauer spectroscopy shows that four kinds of Fe3+ species are present in the supported iron oxide catalysts: Two highly dispersed species, Fe3+ oxide clusters, and α-Fe2O3 particles. Two highly dispersed species, Fe3+ cation and MgFe2O4, are present in Fe/MgO. Fe3+ oxide clusters and α-Fe2O3 crystals are evident in both Fe/SiO2 and Fe/ZrO2. α-Fe2O3 crystals are only observed in Fe/Al2O3.",

author = "Lee, {Eun Ku} and Jung, {Kwang Deog} and Joo, {Oh Shim} and Shul, {Yong Gun}",

year = "2005",

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doi = "10.1016/j.apcata.2004.12.034",

language = "English",

volume = "284",

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journal = "Applied Catalysis A: General",

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T1 - Support effects in catalytic wet oxidation of H2S to sulfur on supported iron oxide catalysts

AU - Lee, Eun Ku

AU - Jung, Kwang Deog

AU - Joo, Oh Shim

AU - Shul, Yong Gun

PY - 2005/4/28

Y1 - 2005/4/28

N2 - Iron oxide catalysts supported on MgO, Al2O3, SiO2 and ZrO2 were prepared by an impregnation method. They were characterized by BET surface analysis, X-ray diffraction (XRD), temperature-programmed reduction (TPR) and Mössbauer spectroscopy. Fe/MgO catalyst shows the highest H2S removal capacity in wet oxidation at room temperature. Both the XRD and the TPR analyses of the catalysts indicate that H2S removal capacity correlates with the dispersion of iron oxide on supports. Mössbauer spectroscopy shows that four kinds of Fe3+ species are present in the supported iron oxide catalysts: Two highly dispersed species, Fe3+ oxide clusters, and α-Fe2O3 particles. Two highly dispersed species, Fe3+ cation and MgFe2O4, are present in Fe/MgO. Fe3+ oxide clusters and α-Fe2O3 crystals are evident in both Fe/SiO2 and Fe/ZrO2. α-Fe2O3 crystals are only observed in Fe/Al2O3.

AB - Iron oxide catalysts supported on MgO, Al2O3, SiO2 and ZrO2 were prepared by an impregnation method. They were characterized by BET surface analysis, X-ray diffraction (XRD), temperature-programmed reduction (TPR) and Mössbauer spectroscopy. Fe/MgO catalyst shows the highest H2S removal capacity in wet oxidation at room temperature. Both the XRD and the TPR analyses of the catalysts indicate that H2S removal capacity correlates with the dispersion of iron oxide on supports. Mössbauer spectroscopy shows that four kinds of Fe3+ species are present in the supported iron oxide catalysts: Two highly dispersed species, Fe3+ oxide clusters, and α-Fe2O3 particles. Two highly dispersed species, Fe3+ cation and MgFe2O4, are present in Fe/MgO. Fe3+ oxide clusters and α-Fe2O3 crystals are evident in both Fe/SiO2 and Fe/ZrO2. α-Fe2O3 crystals are only observed in Fe/Al2O3.

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Support effects in catalytic wet oxidation of H₂S to sulfur on supported iron oxide catalysts

Abstract

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