Thermodynamic and transport properties of the HoBr3-KBr pseudo-binary system

被引：4

作者：

Pilarek, Bozena ^{[1
]}

Rycerz, Leszek ^{[2
]}

Szczygiel, Irena ^{[1
]}

机构：

[1] Wroclaw Univ Econ, Fac Engn & Econ, Dept Inorgan Chem, Komandorska 118-120, PL-53345 Wroclaw, Poland

[2] Wroclaw Univ Technol, Fac Chem, Div Analyt Chem & Chem Met, Wybrzeze Wyspianskiego 27, PL-50370 Wroclaw, Poland

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2016年 / 125卷 / 03期

关键词：

DSC; Molar heat capacity; Electrical conductivity; Phase diagram; CHEMISTRY; BROMIDES; BR;

D O I：

10.1007/s10973-016-5496-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Phase diagram of HoBr3-KBr pseudo-binary system was established by differential scanning calorimetry (DSC) method. This system includes two intermediate compounds: K3HoBr6 and K2HoBr5. K3HoBr6 undergoes a solid-solid phase transition at 689 K and melts congruently at 992 K, while K2HoBr5 melts incongruently at 736 K. In the HoBr3-KBr, system two eutectics occur. The eutectic mixture e(1) melts at 875 K; its composition is x(HoBr3) = 0.162. The other eutectic e(2) with composition of x(HoBr3) = 0.455 melts at 699 K. The heat capacity (solid and liquid phase) of congruently melting compound formed in this system was measured by DSC in the 300-1273 K range. The specific conductivity of HoBr3-KBr liquid mixtures was measured down to temperatures below solidification over the entire composition range. The obtained results are discussed in term of possible complexes formation.

引用

页码：1125 / 1133

页数：9

共 34 条

[1]

[Anonymous], US Patent, Patent No. [4686419 A, 4686419]

[2]

[Anonymous], US Patent, Patent No. [3761758 A, 3761758]

[3]

[Anonymous], US Patent, Patent No. [7319294 B2, 7319294]

[4] PREPARATION AND CRYSTALLOGRAPHIC PROPERTIES OF CERTAIN LANTHANIDE AND ACTINIDE TRIBROMIDES AND TRIBROMIDE HEXAHYDRATES [J].