Anodic dissolution of copper in perchlorate solutions of different ionic strength

By means of the potentiodynamic method, the anodic behavior of copper is st udied in perchlorate solutions in a wide range of pH and ClO4- ion concentr ations. The activating action of CLO4- ions in the anodic process is associ ated with their weak ability to form hydrates, which facilitates their inco rporation into the electrical layer and displacement of OH- ions from the s urface complexes. The schemes of mechanisms proposed for the copper anodic dissolution imply the possibility of the formation of intermediate adsorpti on complexes with participation of CLO4- ions. By the technique of nonlinea r regression analysis, the constants in the kinetic equations are calculate d for the proposed schemes.