| A study on the reduction behayior of Fe_2(MoO_4)_3 with a combined in-situ temperature-programmed reduction- Mossbauer spectroscopic technique |
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| 引用本文： | 葛欣,沈俭一,张惠良. A study on the reduction behayior of Fe_2(MoO_4)_3 with a combined in-situ temperature-programmed reduction- Mossbauer spectroscopic technique[J]. 中国科学B辑(英文版), 1996, 0(1) |
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| 作者姓名： | 葛欣 沈俭一 张惠良 |
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| 作者单位： | Department of Chemistry，Nanjing University，Nanjing 210093，China，Department of Chemistry，Nanjing University，Nanjing 210093，China，Department of Chemistry，Nanjing University，Nanjing 210093，China |
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| 基金项目： | Project supported by the Science Fund of the Chinese Academy of Sciences，the Trans-century Training Program Foundation for the Talents by the State Education Commission of China，the Measurement Fund from the Modern Analysis Center of the Nanjing Univer |
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| 摘 要： | In H2/N2 atmosphere, the reduction behavior of the stoichiometric compound, Fe2(MoO4)3, was studied by in-situ Mossbauer spectroscopy (in-situ MBS), temperature-programmed reduction (TPR) and X-ray diffraction (XRD). The results showed that the reduction products, β-FeMoO4, Mo4O11, MoO2, Fe3O4, Fe2Mo3O8, Fe and Mo, as well as iron-molybdenum alloys, were formed subsequently when the reduction temperature was raised. It was found that when Mo6+ were reduced to Mo4+, Fe2+ were oxidized to Fe3+. Due to the interactions among the metal ions and the electron transfers, the reduction processes of the metal ions in Fe2(MoO4)3 are very complex. According to the results of XRD and MBS obtained at various TPR stages, the reaction equations for the reduction stages were proposed. The Mossbauer spectrum of an intermediate species, Fe2Mo3O8, was found to exhibit two doublets, with I.S.=0.90mm/s and Q.S. =0.58 mm/s, and I.S. = 1.02mm/s and Q.S. = 1.04mm/s, respectively.
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A study on the reduction behayior of Fe_2(MoO_4)_3 with a combined in-situ temperature-programmed reduction- Mossbauer spectroscopic technique |
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| GE Xin SHEN Jianyi and ZHANG Huiliang. A study on the reduction behayior of Fe_2(MoO_4)_3 with a combined in-situ temperature-programmed reduction- Mossbauer spectroscopic technique[J]. Science in China(Chemistry), 1996, 0(1) |
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| Authors: | GE Xin SHEN Jianyi and ZHANG Huiliang |
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| Abstract: | |
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| Keywords: | Fe2(MoO4)3 temperature-programmed reduction XRD in-situ Mossbauer spectroscopy. |
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