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- Title
Experimental study of inhibition of corrosion of mild steel in 1 M HCl solution by two newly synthesized calixarene derivatives.
- Authors
Kaddouri, M.; Rekkab, S.; Bouklah, M.; Hammouti, B.; Aouniti, A.; Kabouche, Z.
- Abstract
Inhibition of the corrosion of mild steel in molar hydrochloric acid by two calixarenes, including the effect of inhibitor concentration and temperature, has been investigated by use of weight loss and electrochemical measurements (polarisation and impedance). The results obtained showed that the rate of corrosion decreased substantially in the presence of the compounds, with maximum inhibition of 98.2 % by one of the compounds at a concentration of 10 M. The effect of temperature on corrosion behaviour in the presence of different concentrations of the two new calixarenes was studied in the range 45-75 °C. The efficiency of inhibition by the compounds increased with increasing inhibitor concentration and was independent of temperature. Polarisation curves revealed that the calixarenes are mixed-type inhibitors. Adsorption of the inhibitors by the carbon steel surface obeyed the Langmuir adsorption isotherm. Some thermodynamic data for the dissolution and adsorption processes were also determined.
- Subjects
MILD steel; CORROSION &; anti-corrosives; HYDROCHLORIC acid; SOLUTION (Chemistry); CALIXARENES synthesis; CALIXARENE derivatives; THERMODYNAMICS
- Publication
Research on Chemical Intermediates, 2013, Vol 39, Issue 8, p3649
- ISSN
0922-6168
- Publication type
Article
- DOI
10.1007/s11164-012-0869-2