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荧光纯氧化镧制备的研究——N263萃取分离镧中的钙、铅、铁

Study on the preparation of fluorescently pure La₂O₃——the removal of Ca, Pb, Fe impurities by extraction with N 263

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【Author】 Chen Chaozong, Yuan Youxue, and Wei Yanling (Department of Chemistry, Beijing University)

【摘要】 <正> 高纯氧化镧,除用于高折射、低色散的特种光学玻璃的制造外,还可用作硫氧化镧和溴氧化镧等荧光基质材料。有人预言,钕激活的硫氧化镧用作激光材料将比YAG∶Nd效力更高。目前,有些厂家生产的氧化镧,由于对其中的非稀土杂质的分离注意得不够,非稀土杂质的含量较高,其中CaO常在5000～20000 ppm,PbO>300 ppm,Fe₂O₃>30 ppm。这不符合上述应用的要求。更多还原

【Abstract】 The extraction of lanthanum, calcium, lead, and iron from their nitrate solutions by N263 was studied. The distribution ratios and separation factors of La, Ca, Pb, Fe were determined under various conditions. The product La₂O₃ containing impurities CaO<8 ppm, PbO<10 ppm and Fe₂O₃<8 ppm was obtained by using box type mixer-settler with multiple stages.更多还原

【关键词】氧化镧； N263；萃取分离；激光材料；有机相；磺化煤；金属离子；盐析剂；串级；分析纯；

【文献出处】化学试剂 ,Chemical Reagents , 编辑部邮箱 ,1984年01期

【被引频次】6
【下载频次】111

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荧光纯氧化镧制备的研究——N263萃取分离镧中的钙、铅、铁

Study on the preparation of fluorescently pure La2O3——the removal of Ca, Pb, Fe impurities by extraction with N 263

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Study on the preparation of fluorescently pure La₂O₃——the removal of Ca, Pb, Fe impurities by extraction with N 263