The study of the crystalline phosphates of kosnarite type structure containing different alkali metals

被引：8
|
作者：
Asabina, E. A. [1 ]
Pet'kov, V. I. [1 ]
Rusakov, D. A. [2 ]
Lazoryak, B. I. [2 ]
Kurazhkovskaya, V. S. [2 ]
机构：
[1] Lobachevsky State Univ Nizhniy Novgorod, Dept Chem, Nizhnii Novgorod 603950, Russia
[2] Moscow MV Lomonosov State Univ, Moscow 119899, Russia
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2010年 / 183卷 / 09期
基金：
俄罗斯基础研究基金会;
关键词：
NZP phosphates; Alkali metals; Hafnium; Solid solutions; Crystal structure; Synthesis; NEUTRON POWDER-DIFFRACTION; CONDUCTIVITY; TITANIUM; ELEMENTS; SN; HF;
D O I：
10.1016/j.jssc.2010.06.018
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The incorporation possibilities of different alkali elements into crystalline phosphates A(1-x)A'Hf-x(2)(PO4)(3) (A = Li, Na, K, Rb, Cs) were studied, the formation regions of kosnarite solid solutions were determined. Na0.5K0.5Hf2(PO4)(3) crystal structure was studied by powder X-ray diffraction, and the distribution of alkali metals in kosnarite structure was found out. The phosphate crystallizes in the space group R (3) over barc, with a=8.7295(1) angstrom, c=23.2023(4) angstrom, V=1531.24(4) angstrom(3), Z=6; R-wp= 6.15, R-p=4.43. The concentration region knowledge of the kosnarite phase existence and peculiarities of their phase formation in the A(1-x)A'M-x(2)(PO4)(3) (M=Ti, Zr, Hf) systems allow us to choose phosphate matrice compositions suitable for solidification of reprocessing wastes of spent U-Pu nuclear fuels. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码：1980 / 1984
页数：5
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