Journal :   Asian Journal of Research in Chemistry

Volume No. :   9

Issue No. :  7

Year :  2016

Pages :   329-334

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Synergistic Effect of Cl-, Br-and I- on the Corrosion Inhibition of Mild Steel in H2SO4 by a Resorcinol: Kinetics and Thermodynamic Studies



Address:   Rupesh Kushwah1, R.K. Pathak2
1Department of Chemistry, Govt. Polytechnic College, Dhar, M.P. India
2Department of Chemistry, Govt. M.L.B. College, Indore, M.P. India
*Corresponding Author
DOI No: 10.5958/0974-4150.2016.00049.3

ABSTRACT:
The synergistic effect between resorcinol and halides on the corrosion of mild steel in 0.5 M H2SO4 solution at 298K is done by mass loss method. Experimental results revealed the pointing synergistic activity of halides on the protective effect of resorcinol. The effect of halides on the inhibition efficiency obey the trend: Cl- < Br - < I - .This trend shows that the radii and electronegativity of the halide play a predominant role in the adsorption process. In contrary the synergism obey the opposite order due to the effective inhibition efficiency of iodide. The adsorption of the resorcinol follows the Langmuir adsorption isotherm. Some kinetic and thermodynamic parameters also calculated and discussed.
KEYWORDS:
Acidic solution, corrosion inhibitor, resorcinol, synergism.
Cite:
Rupesh Kushwah, R.K. Pathak. Synergistic Effect of Cl-, Br-and I- on the Corrosion Inhibition of Mild Steel in H2SO4 by a Resorcinol: Kinetics and Thermodynamic Studies. Asian J. Research Chem. 2016; 9(7): 329-334.
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