iron antimonate

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 过渡金属氧阴离子化合物
• 英文名称: iron antimonate
• 英文别名: Iron(3+);stiborate
• 化学式: Fe*O₄Sb
• 分子量: 241.595
• InChiKey: CJYHBJFWBKCALD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -4.07
• 重原子数：
  6
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  86.2
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  三氯化锑 、 ferric nitrate 在 precipitant: NH₂CONH₂ 作用下， 以 水 为溶剂， 生成 iron antimonate
  参考文献：
  名称：

  Structure of catalytic active site for oxidation of methane to methanol by H2O2 gas mixture over iron-containing catalysts

  摘要：

  Three model catalysts were designed to study the structure of the active iron site responsible for the conversion of methane to methanol by oxygen in the presence of hydrogen at atmospheric pressure. The catalytic activities were correlated with the characterizations of the coordination environments of the iron sites in the three model catalysts. The results suggest that the tetrahedrally coordinated iron site isolated from each other by phosphate groups is the active site for the selective oxidation of methane to methanol by H-2-O-2 gas mixture, The same iron site was effective for the conversion of methane to methanol by H2O2 or N2O. The comparison studies among FePO4, FeAsO4 and FeSbO4 indicate that the acidity of the surrounding groups of iron site plays important roles in the oxidation of methane with H-2-O-2 gas mixture. It is proposed that H-2 and O-2 are activated on the active iron site through the redox between Fe(III) and Fe(II), producing an adsorbed peroxide species responsible for the selective oxidation of methane to methanol, The isolated structure of iron sites muse increase the steady-state concentration of the peroxide species generated from the reaction of H-2 and O-2 on the catalyst surface. The acidic groups surrounding the iron site serve as the acceptor and donor of protons and thus enhance the formation of the peroxide. Furthermore, the acidity of the surrounding groups of iron is suggested to contribute to the selective formation of CH3OH through the protonation of the intermediate methoxide.

  DOI：

  10.1016/1381-1169(96)00177-x
• 作为试剂：
  描述：

  三聚丙烯 、 二氧化硫 、 氢气 、 氧气 在 iron antimonate 一氧化碳 作用下， 以 gas 为溶剂， 生成 二氧化碳 、 水
  参考文献：
  名称：

  一氧化碳和丙烯被氧化铁氧化以自动控制排放

  摘要：

  在汽车操作的典型条件下，测量了铁基材料同时氧化CO和C 3 H 6的总活性：空速为35,000 h -1；空速为35,000 h -1。温度在373至873 K之间；气压; 2.5％CO的进料组合物，1.7％氧气2，0.5％H 2，0.05％C 3 H ^ 6，和任选地，0.004％的SO 2在他。在没有SO 2的情况下，活性依次降低。CO和C 3 H 6的去除遵循明显的一阶动力学，数据显示出补偿定律效应。当SO时氧化被抑制2个在场；Fe 2 O 3上的CO转化温度提高了约160 K，而C 3 H 6氧化的可比升高约80K。Fe 2 O 3在35 m 2 / g TiO 2上的抑制作用小于Fe 2 O 3在350 m 2 / g Al 2 O 3上或在无载体的5 m 2 / g Fe 2 O 3上。FeSbO 4和FePO 4均表现出良好的C 3 H 6转化活性。，但没有SO 2时，不是CO

  DOI：

  10.1016/0021-9517(88)90321-1

文献信息

• Iron chromium antimonates and iron gallium antimonates: preparation, structural and magnetic properties
  作者：Frank J. Berry、Megan I. Sarson、Javier Tejada

  DOI：10.1016/s0277-5387(00)87065-5

  日期：1993.7

  dependence of the inverse magnetic susceptibility of Fe1−xCrxSbO4 at temperatures exceeding ca 200 K follows a Curie-Weiss law. The Curie temperatures and effective magnetic moments decrease with decreasing iron content and are consistent with the substitution of Fe3+ by Cr3+ and a reduction in magnetic interaction between cations in the solid. Deviations from the Curie-Weiss law occur at lower temperatures

  摘要制备了新的Fe1-xCrxSbO4和Fe1-xGaxSbO4混合氧化物。给出了化合物GaSbO4的新的X射线粉末衍射数据，并讨论了当Fe3 +被较小的Cr3 +或Ga3 +离子取代时，FeSbO4的晶格参数降低。Fe1-xCrxSbO4在超过约200 K的温度下的反磁化率的温度依赖性遵循居里-魏斯定律。居里温度和有效磁矩随着铁含量的降低而降低，并且与Cr3 +替代Fe3 +以及固体中阳离子之间的磁性相互作用降低有关。居里-魏斯定律的偏离发生在较低的温度下，铬含量增加，反映了铬对Fe3 +物种中具有短程磁序的团簇形成的影响。从Fe0.85Cr0.15SbO4和Fe0.63Cr0.37SbO4在30至10 K之间记录的更低温度和最高磁化率数据中的第二居里-魏斯定律表明了这些材料中的自旋玻璃型跃迁。Fe1-xGaxSbO4类型的材料的磁性能趋势相似，但是由于顺磁性的Fe3 +被反磁性的Ga3
• On the Oxidation of EuFe₄Sb₁₂ and EuRu₄Sb₁₂
  作者：Jessica M. Peddle、Michael W. Gaultois、Andrew P. Grosvenor

  DOI：10.1021/ic200619c

  日期：2011.7.4

  Rare-earth-filled transition-metal pnictides having the skutterudite-type structure have been proposed for use as high-temperature thermoelectric materials to recover waste heat from vehicle exhaust, among other applications. A previous investigation by this research group of one of the most studied skutterudites, CeFe4Sb12, found that, when exposed to air, this material oxidized at temperatures that are considerably below the proposed maximum operating temperature. Here, by the combined use of TGA, powder XRD, and XANES, it has been found that the substitution of Ce3+ and Fe2+ for larger rare-earth and transition-metal elements (Eu2+ and Ru2+) results in a significantly higher oxidation temperature compared to that of CeFe4Sb12. This increase can be related to the increased orbital overlap provided by these larger atoms (Eu2+ and Ru2+ vs Ce3+ and Fe2+), enabling the development of stronger bonds. These results show how selective substitution of the constituent elements can significantly improve the thermal stability of materials.
• Amador, J.; Rasines, I., Journal of Applied Crystallography, <hi>1981</hi>, vol. 14, p. 348 - 349
  作者：Amador, J.、Rasines, I.

  DOI：——

  日期：——
• Structure of catalytic active site for oxidation of methane to methanol by H2O2 gas mixture over iron-containing catalysts
  作者：Ye Wang、Kiyoshi Otsuka

  DOI：10.1016/1381-1169(96)00177-x

  日期：1996.9

  Three model catalysts were designed to study the structure of the active iron site responsible for the conversion of methane to methanol by oxygen in the presence of hydrogen at atmospheric pressure. The catalytic activities were correlated with the characterizations of the coordination environments of the iron sites in the three model catalysts. The results suggest that the tetrahedrally coordinated iron site isolated from each other by phosphate groups is the active site for the selective oxidation of methane to methanol by H-2-O-2 gas mixture, The same iron site was effective for the conversion of methane to methanol by H2O2 or N2O. The comparison studies among FePO4, FeAsO4 and FeSbO4 indicate that the acidity of the surrounding groups of iron site plays important roles in the oxidation of methane with H-2-O-2 gas mixture. It is proposed that H-2 and O-2 are activated on the active iron site through the redox between Fe(III) and Fe(II), producing an adsorbed peroxide species responsible for the selective oxidation of methane to methanol, The isolated structure of iron sites muse increase the steady-state concentration of the peroxide species generated from the reaction of H-2 and O-2 on the catalyst surface. The acidic groups surrounding the iron site serve as the acceptor and donor of protons and thus enhance the formation of the peroxide. Furthermore, the acidity of the surrounding groups of iron is suggested to contribute to the selective formation of CH3OH through the protonation of the intermediate methoxide.