Evaluation of Anticorrosive Effect of Synthesised Carveol Derivatives on Steel in Hydrochloric Acid
Résumé
Three carveol derivatives (2-phenylcarveol, 2-tolylcarveol and 2-anisylcarveol) were synthesised from carvone to investigate their corrosion inhibition behaviour of steel in 1M HCl using weight loss measurements. The results showed that the addition of these compounds decreases weakly the corrosion rate and increases the inhibition efficiency to reaches 76.6%, 63.14% and 79.6% for 5, 6 and 7 at 1.2 g/L, respectively. The inhibitor adsorption process in mild steel/5-7/hydrochloric acid system was studied at different temperatures (313-323 K) by means of weight loss measurements. The adsorption of compounds 5-7 on steel surface obeyed Langmuir's adsorption isotherm. The corresponding kinetic parameters were determined and discussed.