Synthesis and characterization of a new sulfate K4H2(SO4)3

被引：0
|
作者：
A. H. Hamzaoui
K. Ben-Saâd
M. Férid
A. M’Nif
机构：
[1] Institut National de Recherche Scientifique et Technique,Laboratoire des Matériaux
来源：
Journal of Thermal Analysis and Calorimetry | 2006年 / 86卷
关键词：
ionic conductivity; potassium; sulfate;
D O I：
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中图分类号：
学科分类号：
摘要：
The formation of a new sulfate compound K4H2(SO4)3 is obtained by evaporation at 25°C of an aqueous solution, which was formed by a mixture of K2SO4 and H2SO4. The characterization of this solid is carried out by X-ray diffraction, thermal and infrared analyzes. The heat treatment was carried out in interval 25–700°C; the end product of the thermal evolution is K2SO4. The vibration bands relating to SO4 and OH groups were highlighted by the infrared spectroscopy.Moreover, one study of ionic conductivity on this solid compound was carried out according to the temperature in interval 25–80°C. Its activation energy is 0.47 eV. The X-ray intensities collection obtained on a monocrystal of K4H2(SO4)3 gives the following cell parameters: a=7.035(5), b=19.751(4), c=23.466(2) Å, β=95.25(1)°.
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页码：169 / 172
页数：3
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