Abstract
ANTI-CORROSION ACTIVITY OF EUGENIA SINGAMPATTIANA BEDDOME LEAVES ON API – 5L – GRADE – X60 STEEL IN CRUDE OIL WITH 10%, FREE WATER ENVIRONMENT

C. Chinnakani*, I. Malarvizhi, V. Rama, S. Selvaraj and G. Alagu Muthu

ABSTRACT

Extract of Eugenia Singampattiana Beddome has shown an excellent inhibition performance on API – 5L – Grade – X60 Steel in Crude oil with 10%, Free water environment. The inhibition efficiency increased with the increase of inhibitor concentration and attain of maximum 99.17% inhibition efficiency. The multilayer adsorption on the metal surface may follows physisorption mechanism. Value of activation energy (Ea), enthalpy of adsorption (ΔHads) and free energy changes (ΔGads) clearly suggests that the adsorption of inhibitor on metal surface follows Physisorption, endothermic and spontaneous process respectively. The inhibitor is found to obey Langmuir adsorption isotherms.

Keywords: API – 5L – Grade – X60 Steel, Green inhibitor, Acid, Mass Loss, Adsorption.


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