| 三元体系RECl_3（RE＝La，Pr，Sm）－HOAc－H_2O（30℃）的 |
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| 引用本文： | 李亚红,冉新权,陈佩珩.三元体系RECl_3（RE＝La，Pr，Sm）－HOAc－H_2O（30℃）的[J].盐湖研究,1995(2). |
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| 作者姓名： | 李亚红 冉新权 陈佩珩 |
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| 作者单位： | 西北大学 |
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| 摘 要： | 本文测定了三元系ＲＥＣｌ３（ＲＥ＝Ｌａ，Ｐｒ，Ｓｍ）－ＨＯＡｃ－Ｈ２Ｏ（３０℃）的平衡态的溶度数据并绘制了相应的溶度图．在三个体系中分别形成ＬａＣｌ３·７Ｈ２Ｏ，ＰｒＣｌ３·６Ｈ２Ｏ，ＳｍＣｌ３·６Ｈ２Ｏ三种物质．ＨＯＡｃ对ＬｓＣｌ３·７Ｈ２Ｏ，ＰｒＣｌ３·６Ｈ２Ｏ，ＳｍＣｌ３·６Ｈ２Ｏ盐析作用程度的不同，表明了轻稀土元素的“一分组效应”，同时依据ＨＯＡｃ对ＬａＣｌ３·７Ｈ２Ｏ，ＰｒＣｌ３·６Ｈ２Ｏ，ＳｍＣｌ３·６Ｈ２Ｏ有盐折作用这一结论，提出了一种制备ＬａＣｌ３·７Ｈ２Ｏ，ＰｒＣｌ３·６Ｈ２Ｏ，ＳｍＣｌ３·６Ｈ２Ｏ的新方法．
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| 关 键 词： | 三元体系，氯化镧，氯化镨，氯化钐，醋酸，二分组效应 |
A Study on Ternary Systems RECl_3 (RE=La,Pr, Sm)-HOAc-H_2O (30℃) |
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| Li Yahong,Ran Xinquan,Chen Peiheng.A Study on Ternary Systems RECl_3 (RE=La,Pr, Sm)-HOAc-H_2O (30℃)[J].Journal of Salt Lake Research,1995(2). |
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| Authors: | Li Yahong Ran Xinquan Chen Peiheng |
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| Institution: | Deparment of Chemistry. Northwest University. Xian 710069 |
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| Abstract: | In this paper, the solubilities of saturated solution of ternary systems: RECl3 (RE=La,Pr, Sin)-HOAc-H2O (30℃) have been determinded and the corresponding equilibrium diagrams were constructed. Three compounds LaCl3·7H2O, PrCl3·6H2O. SmCl3· 6H2Owere observed also. The informations of the phase diagrams indicated that HOAc has saltout effects on LaCl3·7H2O, PrCl3·6H2O and SmCl3·6H2O, which showed the bitrad effectof light rare earth elements. According to the salt-out effects of HOAc on LaCl3·7H2O.PrCl3· 6H2O and SmCl3·6H2O a new method to prepare LaCl3·7H2O, PrCl3·6H2O andSmCl3·6H2O was given. |
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| Keywords: | Tenary system light rare earth chloride HOAC Phase diagram |
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