JOURNAL OF CHILEAN CHEMICAL SOCIETY

Vol 61 No 3 (2016): Journal of the Chilean Chemical Society
Original Research Papers

THERMODYNAMIC AND ADSORPTION ISOTHERM OF N,N′-BIS(2,4,6-TRIHYDROXYACETOPHENONE)- 2,2-DIMETHYLPROPANDIIMINE AS A CORROSION INHIBITOR ON SA-210 STEEL IN ALKALINE NACL SOLUTION

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  • J. Dahdele,
  • I. Danaee,
  • G. R. Rashed
J. Dahdele
Abadan Faculty of Petroleum Engineering, Petroleum University of Technology
I. Danaee
Abadan Faculty of Petroleum Engineering, Petroleum University of Technology
Published May 23, 2017
Keywords
  • Corrosion,
  • Inhibitor,
  • Adsorption isotherm,
  • Langmuir,
  • Salen ligand
How to Cite
Dahdele, J., Danaee, I., & Rashed, G. R. (2017). THERMODYNAMIC AND ADSORPTION ISOTHERM OF N,N′-BIS(2,4,6-TRIHYDROXYACETOPHENONE)- 2,2-DIMETHYLPROPANDIIMINE AS A CORROSION INHIBITOR ON SA-210 STEEL IN ALKALINE NACL SOLUTION. Journal of the Chilean Chemical Society, 61(3). Retrieved from https://jcchems.com/index.php/JCCHEMS/article/view/66

Copyright (c) 2017 J. Dahdele, I. Danaee, G. R. Rashed

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Abstract

Adsorption  isotherm  of  N,N′-bis(2,4,6-trihydroxyacetophenone)-2,2-dimethylpropandiimine  (THAPDP)  as  an  environmentally  friendly  Salen  Ligand corrosion inhibitor on mild steel was studied in alkaline solution (pH=10) containing 3% NaCl. Measurements were carried out using electrochemical and surface techniques. Potentiodynamic polarization curves suggested that this compound was an effective corrosion inhibitor for mild steel and the protection efficiency was increased with the increase in inhibitor concentration. The experimental results indicated that this organic compound was a mixed-type inhibitor. Adsorption on the mild steel surface followed the Langmuir isotherm model. Activation parameters and thermodynamic adsorption parameters of the corrosion process such as Ea , ΔH, ΔS, Kads, and ΔGads were calculated at different temperatures.

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