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首页> 外文期刊>Journal of Chemical and Engineering Data: the ACS Journal for Data >Volumetric Properties of the D2EHPA-o-Xylene-Neodymium (Samarium, Europium, Gadolinium, Terbium, Dysprosium) Di(2-ethylhexyl)phosphate Systems at 298.15 K
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Volumetric Properties of the D2EHPA-o-Xylene-Neodymium (Samarium, Europium, Gadolinium, Terbium, Dysprosium) Di(2-ethylhexyl)phosphate Systems at 298.15 K

机译：D2ehpa-O-二甲苯 - 钕（钐，铕，钆，铽，镝）二（2-乙基己基）磷酸盐体系的体积性质在298.15k

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摘要

Densities of ternary solutions in the lanthanide di(2-ethylhexyl)phosphate (LnA(3), Ln = Nd, Sm, Eu, Gd, Tb, Dy)-D2EHPA-o-xylene systems were measured by the vibrating tube densimeter at 298.15 K and atmospheric pressure. For the preparation of liquid mixtures under investigation, LnA3 (Ln = Nd, Sm, Eu, Gd, Tb, Dy) were synthesized and characterized by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and chemical elemental analysis. Excess volumes of solutions were correlated by the Redlich-Kister equation. The maximum absolute deviation between experimental and calculated values of densities was found for the D2EHPA-o-xylene-TbA3 system, and it was 6.3 x 10(-4) g. cm(-3). Densities of virtual liquid lanthanide di(2-ethylhexyl)phosphates were estimated as adjustable parameters. The impact of the impurities on the densities and excess volumes of solutions was investigated. The results obtained in this work may be of interest for extraction experiments where D2EHPA of different purity is usually used.
机译：在298.15的振动管致密度计测量镧系镧系（2-乙基己基）磷酸二（2-乙基己基）磷酸盐（LNA（3），LN = Nd，Sm，Eu，Gd，Tb，Dy）-d2ehpa-o-二甲苯系统的密度。 K和大气压。为了制备正在研究的液体混合物，通过粉末X射线衍射（PXRD），扫描电子显微镜（SEM），傅里叶变换红外光谱，LNA3（LN = Nd，SM，SM，Eu，Gd，Tb，Dy）合成和表征，傅立叶变换红外光谱（FTIR），热重量分析（TGA）和化学元素分析。 Redlich-Kister方程相关的过量的溶液。发现D2ehPA-O-二甲苯-TBA3系统的实验和计算值之间的最大绝对偏差，为6.3×10（ - 4 )g。 cm（-3）。估计虚拟液体镧系二（2-乙基己基）磷酸酯的密度作为可调节参数。研究了杂质对密度和过量体积的溶液的影响。在该工作中获得的结果可能对通常使用不同纯度的D2ehPA的提取实验感兴趣。

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