2016/06/06 by A. Bouanis, A. Nyassi, Bouanis, A. +9 · 1 citation
Chemistry · Engineering · Materials Science · #1 #3 #4-Oxdiazole derivative #Activation energy #Adsorption #Atmospheric temperature range #Carbon steel #Chemistry #Corrosion #Corrosion Behavior and Inhibition #Corrosion inhibition #Enthalpy #Entropy of activation #Epoxy Resin Curing Processes #Gibbs free energy #Hydrochloric Acid #Hydrochloric acid #Inorganic and Organometallic Chemistry #Inorganic chemistry #Kinetics #Langmuir adsorption model #Organic chemistry #Physical chemistry #Pickling #Reaction rate constant #Thermodynamic #Thermodynamics
paper · open access · doi:10.48317/imist.prsm/morjchem-v4i3.5415
published in Moroccan Journal of chemistry 4(3)
openalex publication_date 2016/06/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/01
The corrosion inhibition of carbon steel in 1 M HCl by 2,5-bis(4-dimethylaminophenyl)-1,3,4-oxadiazole (DAPO) was investigated using weight loss method in the temperature range of 303–333 K. It was found that the inhibition efficiency increases with an increase in DAPO concentration but decreases with an increase in temperature. It has been determined that the adsorption for the studied inhibitor on carbon steel complies with the Langmuir adsorption isotherm at all studied temperatures. Both kinetic parameters (activation energy, pre-exponential factor, enthalpy of activation and entropy of activation) and thermodynamics of adsorption (enthalpy of adsorption, entropy of adsorption and Gibbs free energy) were calculated and discussed.