Studies on Phase Equilibrium of Ln(ClO4)3-DAPTU-H2O Ternary System at 30℃

Abstract

Abstract: The solubilities and the refractive indexes of saturated solutions of the title systems at 30℃ have been studied and the corresponding equilibrium solubility diagrams and refractive index diagrams were drawn.All the solubility curves and refractive index curves of these systems consist of three branches,corresponding to DAPTU,Ln( DAPTU)₂( ClO₄)₃·8H₂O(Ln=La,Sm,Yb) and Ln( ClO₄)₃·mH₂O(Ln=La,n=8;Sm,n=9;Yb,n=8),respectively.All the three ternary compounds formed in the title systems are new compounds reported for the first time in this paper.They are of incongruity in water.They were characterized by chemical analysis,elemental analysis,TG-DTG and IRspectra.

Key words: Ternary system, Solubility, N,N'-diantipyryl-thiourea, Perchlorate rare earth

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WANG Zhi-Yin, TANG Zong-Xun, CHEN Kai-Xun, GUO Zhi-Zhen. Studies on Phase Equilibrium of Ln(ClO₄)₃-DAPTU-H₂O Ternary System at 30℃[J]. Chem. J. Chinese Universities, 1994, 15(1): 14.

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Studies on Phase Equilibrium of Ln(ClO₄)₃-DAPTU-H₂O Ternary System at 30℃

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