KINETIC STUDIES OF THECORROSION INHIBITION OF MILD STEEL IN 2M SULPHURIC ACID SOLUTION USING RED PEANUT SKIN EXTRACT AS INHIBITOR

摘要

It has been established from weight loss measurement that the different concentration of acetone extract of red peanut skin (RPSE) inhibits the corrosion of mild steel in sulphuric acid solution to a remarkable extent. Generally, inhibition was found to increase with an increase in inhibitor concentration and half life. A first order type mechanism has been deduced from the kinetic treatment of the result. The mechanism of physical adsorption has been proposed for the inhibitors on the basis of the temperature effect and the values of activation energy obtained. The corrosion is probably due to the adsorption of catechin in red peanut skin extract on the surface of the mild steel.