| NixCu1-xFe2O4的H2/CO2氧化还原反应性能 |
| H2-CO2 Redox Activity over NixCu1-xFe2O4 |
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| 摘要: 完全还原的NixCu1-xFe2O4(x=0.25，0.5，0.75)可用来分解CO2。采用共沉淀法制备了NixCu1-xFe2O4(x=0.25，0.5，0.75)系列铁酸盐的纳米微粒，利用H2-TG数据分析NixCu1-xFe2O4(x=0.25，0.5，0.75)中Cu2+的还原反应动力学数据，得出表观活化能Ea并不是单纯随着Ni2+或Cu2+含量的变化而变化，当x=0.25时反应活化能具有最大值。通过CO2-TG 比较不同样品经H2完全还原后分解CO2的活性，得出Ni0.5Cu0.5Fe2O4具有最低的起始反应温度和最大的分解活性，并采用XRD Rietveld 拟合方法对Ni0.5Cu0.5Fe2O4的完全还原产物和分解CO2产物进行物相分析。 |
| 关键词: 氧化还原化学 尖晶石相 纳米结构 动力学 |
| 基金项目: |
| Abstract: Completely reduced NixCu1-xFe2O4(x=0.25, 0.5, 0.75)can be used to decompose CO2. Ultra-fine NixCu1-xFe2O4 nano-particles were prepared by coprecipitation method. The kinetic parameters of Cu2+ reduction were calculated by H2-TG data. It is found that Ea has the maximum value at x=0.25. The results of CO2-TG display that Ni0.5Cu0.5Fe2O4 has the lowest initial CO2 decomposition temperature and the highest decomposition activity. Furthermore, the phase composition of the product was examined by XRD Reitveld Analysis. |
| Keywords: redox chemistry spinel phase nanostructure kinetics |
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| 马令娟,刘华东,武 瑞,徐文菊,陈林深.NixCu1-xFe2O4的H2/CO2氧化还原反应性能[J].无机化学学报,2010,26(10):1825-1829. |
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