Article ID Journal Published Year Pages File Type
215061 The Journal of Chemical Thermodynamics 2016 7 Pages PDF
Abstract

•The heat capacity of crystalline phosphate CsCoPO4 was performed between T = (6 and 650) K.•Phase transitions were found at T = (313.40, 486.9 and 514.4) K.•Thermodynamic functions were calculated over the range of T = (0 and 650) K.

The heat capacity measurements of the crystalline phosphate CsCoPO4 with a β-tridymite structure were performed between T = (6 and 650) K. Phase transitions were found at T = (313.40, 486.9 and 514.4) K. They correspond to the polymorphic transformations between two monoclinic and two orthorhombic modifications of CsCoPO4, respectively. Thermodynamic functions Cp,mo/R  , Δ0THmo/RT  , Δ0TSmo/R   and Φmo/R were calculated over the range of T = (0 and 650) K from experimental values and the fractal dimension Dfr evaluated. Standard entropy of formation at T = 298.15 K was estimated to be (−386.40 ± 1.38) J · K−1 · mol−1 for crystalline phosphate CsCoPO4.

Graphical abstractThe temperature dependence of the heat capacity of crystalline phosphate CsCoPO4.Figure optionsDownload full-size imageDownload as PowerPoint slide

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Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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