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以柠檬酸为螯合剂,采用一种简单的溶胶-凝胶法,成功的合成了蓝色透明的Nd-Ce-Cu-O体系的凝胶,保证了各元素在分子级别的均匀混合.采用红外光谱仪、热分析和XRD对实验过程和产物进行了分析.结果表明,对于凝胶及粉体的分析结果显示金属离子与柠檬酸螯合形成金属-柠檬酸螯合物,这些螯合物又通过酯化反应相互聚合成胶体粒子.干凝胶在30 ~600℃的温度区间内有五个失重过程.在600℃下已经合成了Nd1.85Ce0.15CuO.4-δ粉体,该合成温度远低于固相法,此外通过谢勒公式计算得在600℃、700℃和1000℃下煅烧获得的粉体的平均粒径分别是18.2nm,31.1 nm和60.5 nm.

参考文献

[1] Khandale, A.P.;Bhoga, S.S. .Study of Nd _(2-x)Ce _xCuO _(4±δ) (x=0.1-0.25) as cathode material for intermediate-temperature solid oxide fuel cells[J].Journal of solid state electrochemistry,2012(1):341-352.
[2] Uthayakumar S;Fittipaldi R;Guarino A;Vecchione A;Romano A;Nigro A;Habermeier HU;Pace S .Thermal treatments and evolution of bulk Nd1.85Ce0.15CuO4 morphology[J].Physica, C. Superconductivity and its applications,2008(22):2271-2274.
[3] Shinsuke Yamanaka;Hirokazu Kobayashi;Ken Kurosaki .Thermophysical properties of layered rare earth copper oxides[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2003(1/2):269-272.
[4] Klimczuk TW.;Klamut PW.;Dabrowski B.;Sadowski W. .Study of superconductivity in a wide range of Ce doping in Nd-214 system[J].Physica, C. Superconductivity and its applications,2000(Pt.1):395-398.
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