Corrosion inhibition of carbon steel by imidazolium and pyridinium cations ionic liquids in acidic environment

Magdy A.M. Ibrahim, Mouslim Messali, Ziad Moussa, Abdullah Y. Alzahrani, Saleh N. Alamry, Belkheir Hammouti

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

New imidazolium-based ionic liquids and some pyridinium-based ionic liquids, were tested as corrosion inhibitors of steel in 1.0 M HCl using potentiodynamic polarization, linear polarization and weight loss methods. The obtained results showed that all of the four ILs are good inhibitors for steel in 1.0 M HCl and the inhibition efficiency increased with increasing the inhibitor concentration. All of the ILs act as mixed-type inhibitors. Obtained results from Tafel polarization, linear polarization and weight loss are in good agreement with each other. The adsorption of the four ILs inhibitors, obey the Langmuir adsorption isotherm. From the adsorption isotherm, values of ΔG ads for the adsorption process were calculated. The effect of temperature on the corrosion behavior of steel in presence of 1 × 10 -3 M of compound II was studied in the temperature range 298-338 K.

Original languageEnglish
Pages (from-to)375-389
Number of pages15
JournalPortugaliae Electrochimica Acta
Volume29
Issue number6
DOIs
Publication statusPublished - 2011
Externally publishedYes

Keywords

  • Adsorption
  • Corrosion inhibitor
  • Electrochemical techniques
  • Ionic inhibitor

ASJC Scopus subject areas

  • Electrochemistry

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