Abstract
The inhibiting effect of our four compounds of tetradecyl-1,2-diol propenoxylates on the dissolution of aluminium in 1 M HCl has been studied using weight loss and polarization measurements. The inhibition efficiency was found to increase with increasing concentration and number of propen oxides per molecule and with decreasing temperature. The results showed that these compounds are adsorbed on the aluminium surface according to the Freundlich isotherm, The values of the standard free energy of adsorption suggest that the adsorptive properties of the compounds under consideration approach those of the physical type. In addition, the effect of temperature on aluminium dissolution in 1 M HCl was studied and the values of the activation energy in the absence and in presence of inhibitor compounds are calculated.