Evaluation of Solubility and Thermodynamic Properties of Synthetic Nickel Hydroxide Carbonate
Gogol D.B. Makasheva A.M. Sadyrbekov D.T. Dyussembayeva L.F. Rozhkovoy I.E. Ishmiev I.I. Zemskiy O.I. Aldabergenova S.K.
December 2024Springer
Journal of Solution Chemistry
2024#53Issue 121674 - 1684 pp.
Knowledge of the values of the thermodynamic functions of natural minerals of transition elements has important applications in the study of the processes of their formation and geochemical migration with groundwater; when developing methods to prevent corrosion of non-ferrous alloys in fresh and sea water; when immobilizing heavy metals in mine drainage and industrial waters, etc. Also, these values are in demand when calculating reactions and developing methods for producing synthetic analogs of minerals, many of which exhibit magnetic, catalytic, photochemical, and other properties. However, in scientific literature, there is a lack of detailed data on the thermodynamic properties of nickel hydroxysalts. A sample of basic nickel carbonate with the theoretical formula Ni3[CO3](OH)4·3H2O was obtained using the hydrothermal synthesis method. The structure of the compound was verified by X-ray diffraction and infrared spectroscopy. Experiments were carried out on sample dissolution in order to measure the solubility constant (solubility product): log10KSP = − 45.8 ± 1.8. Based on the data obtained, the thermodynamic parameters of the reaction of dissolution of the compound were determined and the main thermodynamic functions were determined: Gibbs free energy of formation ΔfG° = − 1554 ± 6 kJ·mol−1; enthalpy of formation ΔfH° = − 1798 ± 9 kJ·mol−1; standard entropy S° = 260.6 ± 7.8 J·mol−1·K−1.
Enthalpy of formation , Gibbs free energy of formation , Nickel hydroxycarbonate , Solubility product , Thermodynamic functions
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Institute of Problems of Complex Development of Mineral Resources, Karaganda, Kazakhstan
Zh. Abishev Chemical-Metallurgical Institute, Karaganda, Kazakhstan
Abylkas Saginov Karaganda Technical University, Karaganda, Kazakhstan
Karaganda Buketov University, Karaganda, Kazakhstan
Institute of Problems of Complex Development of Mineral Resources
Zh. Abishev Chemical-Metallurgical Institute
Abylkas Saginov Karaganda Technical University
Karaganda Buketov University
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