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Experimental and theoretical studies on protecting steel against 0.5 M H 2 SO 4 corrosion by new schiff base

Journal of the Indian Chemical Society, ISSN: 0019-4522, Vol: 99, Issue: 9, Page: 100665
2022
  • 20
    Citations
  • 0
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  • 15
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  • 51
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Metrics Details

  • Citations
    20
  • Captures
    15
  • Social Media
    51
    • Shares, Likes & Comments
      51
      • Facebook
        51

Article Description

In this study, a novel green corrosion inhibitor called 2,2'-((1Z,1′Z)-((piperazine-1,4-diylbis(2,1-phenylene))bis(methanylylidene))bis(azanylylidene)) (PMA) has been tested against corrosion of carbon steel in 0.5 M H 2 SO 4. Quantum and electrochemical methods were used to evaluate PMA's ability to inhibit the deterioration of carbon steel in an acidic environment. The results revealed that PMA acted as a mixed inhibitor, primarily anodic, whose inhibition action was enhanced by increasing its concentration. At 298.15 K, the maximum efficiency was around 91% with 1 × 10 −3  M PMA in 0.5 M H 2 SO 4. The results showed that the inhibition occurred due to adsorption of the PMA molecules on the surface. The adsorbed layer of PMA satisfied the Langmuir adsorption isotherm. The morphology of the surface was examined using scanning electron microscopy.

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