Performance of an amide-based inhibitor derived from coffee bagasse oil as corrosion inhibitor for X70 steel in CO 2 -saturated brine

N. B. Gomez-Guzman, D. M. Martinez de la Escalera, J. Porcayo-Calderon*, J. G. Gonzalez-Rodriguez, L. Martinez-Gomez

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

8 Scopus citations

Abstract

The performance of a fatty acid amide inhibitor synthesized from the coffee bagasse oil has been evaluated by electrochemical techniques such as potentiodynamic polarization curves, open circuit potential measurements, linear polarization resistance, and electrochemical impedance spectroscopy. Inhibitor concentrations included 0, 5, 10, 25, 50, and 100 ppm. Inhibitor efficiency was evaluated on an X70 steel in a CO 2 -saturated brine at 60°C. All the different techniques have indicated a decrease in the cathodic current density and inhibitor efficiency values as high as 96%. The inhibitor was chemically adsorbed on to the steel according to the analysis of the inhibitor adsorption process.

Original languageEnglish
Pages (from-to)49-60
Number of pages12
JournalGreen Chemistry Letters and Reviews
Volume12
Issue number1
DOIs
StatePublished - 2 Jan 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

Keywords

  • CO corrosion
  • X70 steel
  • coffee oil
  • green inhibitor

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