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Adsorption and protective properties of substituted sodium malonates on nickel in neutral aqueous solutions

Year: 2024

Type: article

Abstract: The adsorption and protective action of sodium malonate and its alkyl derivatives (C2 and C9) on the surface of nickel in a neutral buffer solution was studied. Adsorption isotherms of malonate and its alkylderivatives on the oxidized surface of nickel were obtained and the values of free energy of adsorption 0 -DGa were determined, which lie in the range from 51 to 79 kJ/mol. The dependence of the protective effect on the hydrophobicity of alkylmalonates was revealed. The higher the hydrophobicity of the compound, the higher the protective effect. A composition of sodium malonate and laurate in a ratio of 4:1 has been developed, which has a higher protective effect than sodium malonate and laurate alone.

Source: Corrosion material protection and research methods

DOI: 10.61852/2949-3412-2024-2-4-20-33

Authors: М. О. Агафонкина, Н. П. Андреева, Ю. И. Кузнецов, Х. С. Шихалиев

Institutions: Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, Voronezh State University

Language: English

Topic: Corrosion Behavior and Inhibition

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

OpenAlex ID: W4406624391

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