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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Thermodynamic properties of 2,5-bis(4-methoxyphenyl)-1,3,4-oxadiazole as a corrosion inhibitor for mild steel in normal sulfuric acid medium
Corrosion Science, Volume 48, No. 9, Year 2006
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Description
The corrosion rates in the presence of 2,5-bis(4-methoxyphenyl)-1,3,4-oxadiazole (4-MOX) as a steel corrosion inhibitor in 0.5 M sulfuric acid, were measured by the weight loss method, in the range of temperatures from 303 to 343 K. Results obtained revealed that 4-MOX performed excellently as a corrosion inhibitor for mild steel in sulfuric acid media and its efficiency attains more than 96.19% at 8 × 10-4 M at 333 K. The inhibition was assumed to occur via adsorption of the oxadiazole molecules on the metal surface. The Langmuir adsorption isotherm was tested for their fit to the experimental data. The apparent activation energies, enthalpies and entropies of the dissolution process and the free energies and enthalpies for the adsorption process were determined and discussed. The fundamental thermodynamic functions were used to glean important information about 4-MOX inhibitory behaviour. © 2005 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Bouklah, Mohammed
Morocco, Oujda
Faculté Des Sciences D’oujda
Hammouti, Belkheir
Morocco, Oujda
Faculté Des Sciences D’oujda
Lagrenee, Michel
France, Villeneuve-d'ascq
Unité de Catalyse et Chimie du Solide Uccs
Bentiss, F.
France, Villeneuve-d'ascq
Unité de Catalyse et Chimie du Solide Uccs
Morocco, El Jadida
Faculté Des Sciences D'el Jadida
Statistics
Citations: 462
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1016/j.corsci.2005.08.019
ISSN:
0010938X