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  • Chem Sci Trans., 2013, 2(2),  pp 670-676  

    DOI:10.7598/cst2013.423

    Research Article

    Aniline as Corrosion Inhibitor for Zinc in Hydrochloric Acid

  • R. T. VASHI and KRUNAL DESAI
  • Department of Chemistry, Navyug Science College, Rander Road, Surat- 395 009, Gujarat, India
  • Abstract

    The corrosion of zinc in hydrochloric acid containing aniline has been studied at different acid concentrations, inhibitor concentration and temperatures. Corrosion increases with the concentration of acid and the temperature. As the concentration of inhibitor increases Inhibition efficiency (I.E.) also increases. At constant inhibitor concentration, the I.E. decreases with the increase in concentration of acid. As temperature increases, percentage of inhibition decreases. The plot of log (θ/1-θ) versus log C results in a straight line suggest that the inhibitors cover both the anodic and cathodic regions through general adsorption following Longmuir isotherm. Galvenostatic polarization curves show polarization of both anodes as well as cathodes.

    Keywords

    Corrosion, Inhibition, Inhibition efficiency

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