Phase diagrams of binary system HoCl~3-MCl~n(M=Li, Mg, Ca, Pb; n=1, 2)

Abstract

The phase diagrams of the binary systems HoCl3-MCln (M = Li, Mg, Ca, Pb; n = 1, 2) were investigated by means of DTA and x-ray diffraction anal. It was found that HoCl3-LiCl system is of peritectic type characterized by the compound Li3HoCl6 and invariant points e (50.5 mol% HoCl3, 452癈) as well as p (34.0 mol% HoCl3, 506癈). HoCl3-MgCl2, -CaCl2, and -PbCl2 systems are of simple eutectic type with eutectic points 50.0 mol% HoCl3 (580癈), 49.0 mol% HoCl3,(541癈) and 37.0 mol% HoCl3 (422癈) resp. Unstable compound, formed in the solid state, is PbHoCl5 which decomps. at 408癈. Some rules of phase diagram were explored.

Key words: X-RAY DIFFRACTION ANALYSIS, IRON CHLORIDE, DIFFERENTIAL THERMAL ANALYSIS, MAGNESIUM CHLORIDE, CALCIUM CHLORIDE, PHASE DIAGRAM, CHLORINE COMPOUNDS, LITHIUM CHLORIDE

CLC Number:

O642

Cite this article

ZHENG CHAOGUI;HUANG SHOULIN;WANG SIQIANG. Phase diagrams of binary system HoCl~3-MCl~n(M=Li, Mg, Ca, Pb; n=1, 2)[J]. Acta Chimica Sinica, 1994, 52(8): 735-739.

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HoCl~3-MCl~n体系相图的研究(M=Li, Mg, Ca, Pb; n=1, 2)