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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Thiophene derivatives as effective inhibitors for the corrosion of steel in 0.5 M H
2
SO
4
Journal of Applied Electrochemistry, Volume 35, No. 11, Year 2005
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Description
The influence of thiophene and five of its substituted derivatives on the corrosion inhibition of steel in 0.5 M H2SO4 solution was studied using weight-loss, electrochemical polarisation, and impedance measurements. 5-tert-butoxythiophene-2-carbaldehyde phenylhydrazone (TBCP) is the best inhibitor and its inhibition efficiency increases with increase in concentration to attain 87% at 5×10-3 M. Potentiodynamic polarisation studies clearly reveal that it acts essentially as a cathodic inhibitor. The partial π-charge on atoms has been calculated. A correlation between the highest occupied molecular orbital E HOMO and inhibition efficiencies was sought. The inhibition efficiency of TBCP is not affected by rise in temperature in the range 298-353 K. E% values obtained from weight-loss and electrochemical methods were in good agreement. Adsorption of TBCP on steel has an S-shaped adsorption isotherm. © Springer 2005.
Authors & Co-Authors
Bouklah, Mohammed
Morocco, Oujda
Université Mohammed Premier Oujda
Hammouti, Belkheir
Morocco, Oujda
Université Mohammed Premier Oujda
Benkaddour, Mohammed
Morocco, Oujda
Université Mohammed Premier Oujda
Ben Hadda, Taibi
Morocco, Oujda
Université Mohammed Premier Oujda
Statistics
Citations: 86
Authors: 4
Affiliations: 1
Identifiers
Doi:
10.1007/s10800-005-9004-z
ISSN:
0021891X