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  • Chem Sci Trans., 2015, 4(3),  pp 758-767  

    DOI:10.7598/cst2015.1059

    Research Article

    Novel Pyrazole Based Ionic Liquid as a Corrosion Inhibitor for Mild Steel in Acidic Media

  • M. R. EZHILARASI, B. PRABHA and T. SANTHI*
  • Department of Chemistry, Karpagam University, Coimbatore-21, Tamilnadu, India
  • Abstract

    The corrosive inhibitive effect of compound on mild steel in molar solution of H2SO4 and HCl was investigated by weight loss, potentiodynamic polarization and electro chemical impedance studies. 1-Acetyl-4, 5-dihydro-5-phenyl-3-(thiophen-2yl) pyrazoles was synthesized, characterized and structure elucidated by FTIR, 1H NMR, 13C NMR. The corrosion inhibition rate was increased by increasing the concentration of inhibitor (1-acetyl-4, 5-dihydro-5-phenyl-3-(thiophen-2yl) pyrazoles) and decreases with increase in temperature. The interaction between inhibitor and surface of steel obey Langmuir isotherm.

    Keywords

    Pyrazole, Mild steel, Inhibition efficiency, Synergetic effect, Adsorption isotherm, Kinetics

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