AMINOBENZENE AS ANTICORROSIVE AGENT FOR ALUMINIUM IN SULPHURIC ACID MEDIUM
2023
Husaini, Musa
Anti corrosion effect of aminobenzene on the degradation of aluminium in sulphuric acid solution was investigated through the method of weight loss. Functional group characterization analysis was done by using FTIR and surface characterization was done by using scanning electron microscopic analysis. The aminobenzene shows good inhibition effect from the result obtained for the corrosion of aluminium in sulphuric acid at different temperatures. The effect of aminobenzene and remaining parameters were studied at various aminobenzene concentration and expected mechanism of the studied aminobenzene consisted with Langmuir isotherm model. From the result it was found that increase in the concentration of aminobenzene lead to increase in inhibition efficiency which degreases with temperature rises. The activation energy value in the absence of aminobenzene was 36.39. kJ/mol which increased to 54.98 kJ/mol by the addition of 0.1 M aminobenzene concentration. The activation enthalpy values were all positive and that make the reaction endothermic. Activation entropy and Gibbs free energy of adsorption values were negative which suggest a disordered system and spontaneous adsorption of the process. FTIR and SEM analysis result revealed the formation of thin layer of aminobenzene molecules on the surface of aluminum
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