| 镧系元素的光化学II.铽(III)在焦磷酸钠溶液中的光助氧化反应 |
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| 引用本文： | 李小静,杨汝栋. 镧系元素的光化学II.铽(III)在焦磷酸钠溶液中的光助氧化反应[J]. 化学学报, 1987, 45(5): 432-438 |
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| 作者姓名： | 李小静 杨汝栋 |
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| 作者单位： | 兰州大学化学系 |
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| 摘 要： | 在紫外光(2537A)作用下,由Tb(ClO4)3-Na4P2O2-(NH4)2S2O8-HClO4体系中制得了焦磷酸铽(IV)的沉淀.研究了光助氧化的反应级数及影响沉淀中Tb(IV)/ΣTb比值的因素.报道了焦磷酸铽(IV的磁矩,热稳定性.红外光谱并分析了沉淀的组成Tb(IV)和Tb(III)混合物与其它镧系元素的分离因数.同时还对在酸性介质中生成焦磷酸铽(IV)配合物的吸收光谱,还原反应动力学进行了研究.
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| 关 键 词： | 铵化合物 钠化合物 氧化 红外分光光度法 反应动力学 热稳定性 镧系元素 光化学 高氯酸 还原反应 |
Photochemistry of lanthanum series II: Photo-assisted-oxidation reaction of terbium(III) in sodium pyrophosphate solution |
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| LI XIAOJING,YANG RUDONG. Photochemistry of lanthanum series II: Photo-assisted-oxidation reaction of terbium(III) in sodium pyrophosphate solution[J]. Acta Chimica Sinica, 1987, 45(5): 432-438 |
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| Authors: | LI XIAOJING YANG RUDONG |
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| Abstract: | A Tb(IV) ppt. was formed in photo-assisted oxidation promoted by low pressure Hg lamp (2537 ? in the system: Tb(ClO4)3-Na4P2O7-(NH4)2S2O8-HClO4. The order of reaction and the effect of various factors upon the ratio of Tb(IV) to total Tb in the ppt. was studied. The composition, moment of magnetism, thermal stability, IR spectrum and the separation factor between Tb and other rare earth elements were determine The absorption spectra and the reduction kinetics of Tb(IV) pyrophosphate in acid solution was also investigated. |
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| Keywords: | AMMONIUM COMPOUND SODIUM COMPOUNDS OXIDATION INFRARED SPECTROPHOTOMETRY REACTION KINETICS THERMAL STABILITY LANTHANON PHOTOCHEMISTRY PERCHLORIC ACID REDUCTION REACTION |
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