N-((4-CHLOROPHENYL)(MORPHOLIN-4-YL)METHYL)BENZAMIDE as corrosion inhibitor for mild steel in Sulphuric acid medium

Authors

  • Anwar Sathiq M
  • Jamal Abdul Nasser A

DOI:

https://doi.org/10.46947/joaasr17201747

Keywords:

Mild steel, Temkin’s adsorption isotherm, corrosion inhibitor, potentiodynamic polarization and scanning electron microscopy

Abstract

The inhibiting effect and adsorption behavior of N-[(4-chlorophenyl)(morpholin-4-yl)methyl]benzamide (CPMB) on mild steel in sulphuric acid solution were studied by weight loss measurements, effect of temperature studies, potentiodynamic polarization and scanning electron microscopic techniques. The inhibitor showed greater than 90 % inhibition efficiency at 0.01 M. Potentiodynamic polarization studies showed that the inhibition action is concentration dependent, at low concentration anodic, higher concentration cathodic, inhibition predominant. The adsorption process of CPMB at the mild steel/sulphuric acid solution interface is described by Temkin’s adsorption isotherm model. The negative value of standard free energy of adsorption in the presence of inhibitor suggests spontaneous adsorption of CPMB molecule on the mild steel surface. The protective film formation against the acid attack is confirmed by SEM.

Metrics

Metrics Loading ...

Downloads

Published

2017-01-06

How to Cite

Anwar Sathiq M, & Jamal Abdul Nasser A. (2017). N-((4-CHLOROPHENYL)(MORPHOLIN-4-YL)METHYL)BENZAMIDE as corrosion inhibitor for mild steel in Sulphuric acid medium. JOURNAL OF ADVANCED APPLIED SCIENTIFIC RESEARCH, 1(7). https://doi.org/10.46947/joaasr17201747