SYNTHESIS AND THERMAL-DECOMPOSITION OF CH3NH3LN(SO4)2.4H2O (LN = TM, YB OR LU)

被引:5
|
作者
JORDANOVSKA, V [1 ]
SIFTAR, J [1 ]
机构
[1] EDVARD KARDELJ UNIV, DEPT CHEM, YU-61000 LJUBLJANA, YUGOSLAVIA
关键词
D O I
10.1007/BF01913082
中图分类号
O414.1 [热力学];
学科分类号
摘要
The double sulfates of Tm, Yb and Lu with monomethylammonium were obtained by evaporation of an aqueous mixture of rare earths(III) sulfate and monomethylammonium sulfate at room temperature and treatment of the concentrated mixture with ethanol. After identification of the double sulfates, they were examined by means of TG, DTG and DTA analysis, from 20 to 700-degrees. Two clearly separated stages of thermal decomposition were evident. It was possible to determine the stoichiometry of the obtained compounds from the TG curves.
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页码:73 / 77
页数:5
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