BENZOIC ACID DERIVATIVES AS EFFECTIVE CORROSION INHIBITORS FOR CARBON STEEL IN 3.5 % SODIUM CHLORIDE SOLUTION.

Kabel, Khalid; Kamel, L.; Abou-shahaba, R.; El-Shenawy, Azza; Shahen, Seham; Abdel-satar, Nour E.; Fouda, A. S.; Khalil, E.M. M.; Mohamed, Ahmed S.

doi:10.21608/absb.2017.8109

BENZOIC ACID DERIVATIVES AS EFFECTIVE CORROSION INHIBITORS FOR CARBON STEEL IN 3.5 % SODIUM CHLORIDE SOLUTION.

Document Type : Original Article

Authors

¹ Petroleum Applications Department, Egyptian Petroleum Research Institute, Naser City, P.O. 11727, Cairo, Egypt.

² Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.

³ Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt

⁴ Chemistry Department, Faculty of Science, Mansoura University, Mansoura-35516, Egypt

⁵ Chemistry Department, Faculty of Science, Helwan University, Helwan, Cairo, Egypt

⁶ Refining and Processing Department, Egyptian general petroleum corporation, Cairo, Egypt

10.21608/absb.2017.8109

Abstract

New corrosion compounds were prepared based on acryloyl chloride and the efficiency of the prepared compounds to inhibit carbon steel (CS) corrosion in 3.5% sodium chloride solution were studied through different electrochemical techniques [potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS) and electron frequency modulation (EFM)] and Quantum chemical calculations. The results showed that the investigated compounds are working as good corrosion inhibitor compounds, the inhibition efficiency (%IE) increases as the compound concentration increase. The polarization data revealed that these compounds act as cathodic and mixed type compounds and are adsorbed on CS surface following Langmuir adsorption isotherm.

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