Adsorption mechanism of benzotriazole for corrosion inhibition of copper-nickel alloy in hydrochloric acid

Anees A. Khadom, Aprael S. Yaro, Abdul Amir H. Kadhum

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The inhibition of copper corrosion by Benzotriazole (BTA) in 5% HCl has been investigated by weight loss technique at different temperatures. Langmuir adsorption isotherm, Freundlich Adsorption Isotherm and Kinetic-Thermodynamic Model were used to describe the adsorption process depending on values of surface converge. Maximum value of surface converge was 0.998 for BTA at 35 °C and 15 g/l inhibitor concentration, while the lower value was 0.868 at 55 °C and 1 g/l inhibitor concentration. The films formed on the copper-nickel alloy surface of BTA appeared to obey the Langmuir Adsorption Isotherm more than Freundlich adsorption isotherm. In the other hand, results showed that the Kinetic-Thermodynamic Model was unsuitable to fit the experimental data of the BTA of the present study.

Original languageEnglish
Pages (from-to)150-152
Number of pages3
JournalJournal of the Chilean Chemical Society
Volume55
Issue number1
Publication statusPublished - 2010

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Hydrochloric Acid
Adsorption isotherms
Corrosion
Adsorption
Thermodynamics
Copper corrosion
Kinetics
benzotriazole
nickel copper alloy
Temperature

Keywords

  • Adsorption isotherms
  • Benzotriazole
  • Copper-nickel alloy
  • Corrosion inhibition
  • Inhibitor efficiency

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Adsorption mechanism of benzotriazole for corrosion inhibition of copper-nickel alloy in hydrochloric acid. / Khadom, Anees A.; Yaro, Aprael S.; Kadhum, Abdul Amir H.

In: Journal of the Chilean Chemical Society, Vol. 55, No. 1, 2010, p. 150-152.

Research output: Contribution to journalArticle

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