Thermoanalytical investigation of nanocrystalline iron (II) phosphate obtained by spontaneous precipitation from aqueous solutions

被引：27
|
作者：
Scaccia, S [1 ]
Carewska, M [1 ]
Di Bartolomeo, A [1 ]
Prosini, PP [1 ]
机构：
[1] ENEA, CR Casaccia, IDROCOMB, Hydrogen Project & Fuel Cells, I-00060 Rome, Italy
来源：
THERMOCHIMICA ACTA | 2003年 / 397卷 / 1-2期
关键词：
Fe-3(PO4)(2)center dot 8H(2)O; thermal analysis; nano-sized particles; X-ray powder diffraction;
D O I：
10.1016/S0040-6031(02)00292-7
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Fe-3(PO4)(2)(.)8H(2)O has been precipitated under supersaturation conditions from deaerated Fe(NH4)(2)(SO4)(2)(.)6H(2)O and K-2-HPO4 aqueous, ethanol-water and iso-propanol-water solutions at pH = 6.5 and ambient temperature. The precipitates have been characterised by TG/DTG/DTA and DSC techniques, chemical analysis, BET, and X-ray powder diffraction. The presence of ethanol and iso-propanol in the spontaneous precipitation process of ferrous phosphate leads to highly crystalline powder. Thermal treatment at 500degreesC yields a poorly crystalline dehydrated iron phosphate. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：135 / 141
页数：7
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