Synthesis, characterization and mitigation action of innovative Schiff base on steel disintegration in sulfuric acid solution

A novel Schiff base compound namely: (6E, 7E)-N1, N6-bis(1-methylpyrrolidin-2-ylidene) hexane-1,6-diamine, is synthesized, confirmed, and tested as a disintegration controller for steel in 0.5 mol L−1 sulfuric acid solution. The mitigation efficacy is estimated utilizing electrochemical and chemical methods. The manufactured compound reduces significantly the speed of disintegration. The mitigation efficacy ameliorates with the amount of the synthesized compound and decays with the solution's temperature. Thermodynamics and physical quantities are argued. The compound's adsorption satisfied Langmuir's model. The adsorption of the prepared compound belongs to physical-type. The received results with different techniques were very closely related, which reflects the validity and accuracy. The mitigation efficiency greatly rises by adding metallic chlorides to the Schiff base compound. The formed complexes play a vital role in the ameliorating the resistance of steel to disintegration. Density functional theory was applied to explain the nature of interaction between the Schiff base molecules and the steel metal. •Novel azomethine compound was synthesized and characterized.•Novel Schiff base compound showed good inhibition for steel in 0.5 mol L−1 H2SO4.•The adsorption of inhibitor on steel belongs to physical type.•Addition of metal halides to the inhibitor increases the inhibition efficiency.•The interaction between the synthetic compound and the steel metal was investigated.