Phase Formation in the ZrO(NO3)2-H3PO4-CsF(HF)-H2O System

被引：7
|
作者：
Godneva, M. M. [1 ]
Motov, D. L. [1 ]
Rys'kina, M. P. [1 ]
Pakhomovskii, Ya. A. [1 ]
机构：
[1] Russian Acad Sci, Kola Res Ctr, Tananaev Inst Chem & Technol Rare Elements & Mine, Apatity 184200, Murmansk Oblast, Russia
来源：
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY | 2012年 / 57卷 / 07期
关键词：
Cesium; Differential Thermal Analysis Curve; Fluorine Content; Fluorozirconate; Thermal Analysis Condition;
D O I：
10.1134/S0036023612060113
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The phase formation in the system ZrO(NO3)(2)-H3PO4-CsF(HF)-H2O was studied at the molar ratio CsF/Zr = 1 along the sections PO43-/Zr = 0.5 and 1.5 at a ZrO2 concentration in the initial solution of 2-14 wt %. The following compounds were isolated: Cs5Zr4F21 center dot 3H(2)O, CsZr2(PO4)(3) center dot 2HF center dot 2H(2)O, CsZrF2PO4 center dot H2O, CsZr2F6PO4 center dot 4H(2)O (for the first time), CsHZrF3PO4 (for the first time), Cs0.70ZrF(PO4)(1.23) center dot nH(2)O, and CsHZr2F2(PO4)(2.66) center dot nH(2)O. The compositions of CsZrF2PO4 center dot H2O, Cs0.70ZrF(PO4)(1.23) center dot nH(2)O, and CsHZr2F2(PO4)(2.66) center dot nH(2)O are conditional. All the compounds were characterized by crystal-optical, X-ray powder diffraction, thermal analyses, and IR spectroscopy. The formula CsHZrF3PO4 was established by energy-dispersive analysis with a LEO-1450 scanning electron microscope and an MS-46 CAMECA X-ray microanalyzer.
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页码：1033 / 1040
页数：8
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