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| CORROSION INHIBITION OF 6-NITROBENZIMIDAZOLE IN KOH SOLUTION FOR ZINC |
| HU Lianyue, ZHANG Shengtao,HUANG Xiaohong, WU Yongying |
| College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044 |
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Abstract The effect of 6-nitrobenzimidazole on the zinc corrosion in 0.1 mol/L KOH solution has been studied by electrochemical, weight loss measurements and quantum chemical calculations. It has been shown that 6-nitrobenzimidazole act as an anodic inhibitor, can effectively restrain the process of the anodic oxidation of zinc. The highest value of inhibition efficiency is 96.8% at 5 mmol/L concentration. Thermodynamic calculation suggests that the adsorption of 6-nitrobenzimidazole follows Langmuir adsorption isotherm.
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Received: 22 May 2011
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Corresponding Authors:
ZHANG Shengtao
E-mail: stzhang@cqu.edu.cn
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