Excess properties of the (Ln2-2xCaxThx)(PO4)2 (Ln = La, Ce) solid solutions

被引：19
作者：
Konings, R. J. M. [1 ]
Walter, M. [1 ]
Popa, K. [1 ,2 ]
机构：
[1] Commiss European Communities, Joint Res Ctr, Inst Transuranium Elements, D-76125 Karlsruhe, Germany
[2] Alexandru Ioan Cuza Univ, Dept Chem, Iasi 700506, Romania
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2008年 / 40卷 / 08期
关键词：
Monazite; Lanthanide phosphates; Solid solutions; Mixing properties; Calorimetry;
D O I：
10.1016/j.jct.2008.03.009
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
X-ray powder diffraction at room temperature and drop calorimetry at T = 1005 K were performed on LnPO(4)-CaTh(PO4)(2) (Ln = La, Ce) solid solutions. The results show excess molar volume and excess enthalpy indicating deviations from ideal behaviour that have been interpreted in terms of lattice strains resulting from the ion size effects of substitution of the Ln(3+) with (Ca2+ + Th4+). (C) 2008 Elsevier Ltd. All rights reserved.
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收藏
页码：1305 / 1308
页数：4
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