Study of Complexation Patterns in the System Ni²⁺, MoO₄2_–, P₂O₇4_–, Cit^3– for the Development of Poly-Ligand Electrolytes (Study of complexation patterns)

Nenastina T. Sakhnenko M. Oksak S. Yar-Mukhamedova G. Zellele D. Mussabek G. Imanbayeva A.
22 October 2024 Institute of Combustion Problems, al-Farabi Kazakh State National University

Eurasian Chemico-Technological Journal
2024 #26 Issue 3 155 - 160 pp.

The complexation behavior in systems containing Ni²⁺, MoO₄ 2₋, P₂O₇ 4₋, Cit³⁻-ions have been thoroughly investigated. The study determined the composition and instability constants of both mono-and biligand complex compounds at a constant ionic strength of the solution (Ic=1). By analyzing the concentration ratios of the complexing agent and ligands, the composition of mono-and polyligand complexes was elucidated. The complexation study utilized the potentiometric method, which is based on the functional dependence of the potential of the indicator electrode on the concentration of the complexing agent ions. The results enabled the calculation of the ionic composition of aqueous solutions of nickel complexes with citrate and diphosphate ions, depending on their concentrations. A proposed scheme for the formation of heteronuclear nickel-molybdenum complexes takes into account the sequence of component introduction into the electrolyte to form complexes of a specific composition. These findings were applied to develop electrolyte compositions for coating with alloys based on iron subgroup metals with molybdenum. These alloys exhibit several valuable properties, including corrosion resistance, electrocatalytic activity in hydrogen production, and enhanced operational characteristics.

Citrate ion , Complexation , Heteronuclear complex , Molybdenum , Nickel , Polyligand electrolyte , Potentiometric method , Unsteadiness constant

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Kharkiv National Automobile and Highway University, 25 Yaroslava Mudrogo str, Kharkov, Ukraine
National Technical University Kharkiv Polytechnic Institute, 2 Kyrpychova str, Kharkiv, Ukraine
Al-Farabi Kazakh National University, Al-Farabi ave, 71, Almaty, 050040, Kazakhstan

Kharkiv National Automobile and Highway University
National Technical University Kharkiv Polytechnic Institute
Al-Farabi Kazakh National University

10 лет помогаем публиковать статьи Международный издатель

Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026

Study of Complexation Patterns in the System Ni2+, MoO42–, P2O74–, Cit3– for the Development of Poly-Ligand Electrolytes (Study of complexation patterns)

Study of Complexation Patterns in the System Ni²⁺, MoO₄2_–, P₂O₇4_–, Cit^3– for the Development of Poly-Ligand Electrolytes (Study of complexation patterns)