Kinetics study of the corrosive behavior of copper in 1M HCl acid and its inhibition with 2-benzothiazolethiol
Abstract
Techniques lost weight and revolution of H2 gas were used in several inhibitor concentrations from 100-400 ppm in different temperatures from 30-50 °C for kinetics study corrosion of copper in 1M HCl acid and inhibition by 2-benzothiazolethiol. Results showed that when increasing inhibitor concentrations and temperature, increases the inhibition efficiency, due to adsorption of a layer of film on a surface of metal and the inhibitor efficacy by presence of oxygen and nitrogen atoms that have a strong portion in the adsorption process. In this research activation, enthalpy, entropy and free energy of adsorption energies were exhibited excellent results with by increasing the values of activation and enthalpy energy and decrease entropy energy and this indicates to occurrence of excellent adsorption to the inhibitor and adsorption of mixed type chemical physical adsorption.
