Enthalpies of formation of some 3d Transition Metal-Antimony compounds by high temperature direct synthesis calorimetry

• Published in: Journal of alloys and compounds 2020-12, Vol.849, p.156621, Article 156621
• Main Authors: Meschel, S.V., Nash, Philip
• Format: Article
• Language: English
• Subjects: 3d transition; Antimony; Antimony compounds; Calorimetry; Enthalpy; Heat measurement; High temperature; Metal alloys; Synthesis; Thermodynamics; Transition metals
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2020.156621

In this work we have performed a calorimetric investigation of some thermoelectric compounds, which are useful for energy savings, but do not contain toxic or extremely rare elements. The standard enthalpies of formation at 298 K of some binary antimony and transition metal (TM) compounds have been measured by high temperature direct synthesis calorimetry. The reported results are: ScSb(−112.0 ± 3.1); Sc5Sb3(-95.4 ± 2.8) TiSb (−63.3 ± 2.4); CrSb (−3.0 ± 2.7); FeSb2(0 ± 2.5); Mn2Sb (−9.2 ± 1.5); CoSb (−19.6 ± 1.3); CoSb3(-20.1 ± 2.0); NiSb (−35.3 ± 1.8). In kJ/mole of atoms. We compare our experimental measurement results with some previously published measurements and with predicted values by ab initio calculations. •Outlined the importance and industrial uses of the studied compounds with particular emphasis on their thermoelectric properties.•Studied binary 3d Transition Metal-Antimony compounds by high temperature direct synthesis calorimetry.•Determined the standard enthalpies of formation of nine compounds.•Compared the experimental measurements with predictions by two theoretical models.•The experimental measurements agree better with the prediction by the more current ab initio model.