Hydrocarbon-soluble metal corrosion inhibitors. II. Physicochemical aspects of inhibitor action. Amides and salts of carboxylic acids

• A. I. Altsybeeva, E. A. Tronova and V. V. Burlov

OOO NPO NEPhTEKhIM, ul. Pulkovskaya 10, St. Petersburg, 196158 Russian Federation

Abstract: Some molecular aspects of protective action and specific behavior of hydrocarbon-soluble amides and salts of certain amines and morpholine with carboxylic acids in aqueousorganic environments are considered. The electron densities on those heteroatoms which are presumably responsible for adsorption and inhibition, as well as the Hansch π-constants have been calculated. Hypothetical adsorption models have been suggested for tridecanoic acid amides with hexylamine, cyclohexylamine, piperidine, piperazine, morpholine and the cyclohexylamine quaternary salt. Hypothetical adsorption schemes and the probable inhibitor efficiency of the products have been analyzed with consideration for data on the electronic charges and hydrophobicity of the molecules.

Keywords: hydrocarbon-soluble corrosion inhibitors of metal corrosion; efficiency forecast; amides and salts of carboxylic acids; hexylamine; cyclohexylamine; morpholine; piperidine; piperazine

Int. J. Corros. Scale Inhib., 2014, 3, no. 3, 160–166 PDF (862 K)
doi: 10.17675/2305-6894-2014-3-3-160-166

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