Files in this item



application/pdf1957_cooper.pdf (9MB)Restricted to U of Illinois
(no description provided)PDF


Title:Anodic behavior of copper in hydrochloric acid
Author(s):Cooper, Ralph Sherman
Doctoral Committee Chair(s):Bartlett, J.H.
Department / Program:Physics
Anodic behavior
Abstract:The behavior of a CulHCl anode has been studied with attention to the formation of anode films, current and. potential transients, steady state conditions, ionic concentrations in the anolyte, and the role of natural convection. When a fixed potential is applied~ the current passes through one or more periods where it is constant for a time while a solid film spreads over the surface. The anode reaction products (CuCl and Cu++), have been identified, and the current found to obey Muller's laws for anodic film formation.. Overshoot and periodic current fluctuations. have been observed to occur only where the anode layer may undergo solution. A simple theory of overshoot has 'been developed which predicts the form of the current rise after the minimum. The steady state shows two regions where the current is independent of voltage. In the first region only monovalent copper is formed and the current is determined by the rate of solution of the CuCl layer (as the CUCL2 - complex), which is in turn controlled by the convective removal of the complex ion. The second region is associated with Cu++ as an additional reaction product and consequently the current is higher than in the first region. The schlieren microscope has been developed to yield quantitative results and has been applied to the investigation of the concentration gradients in the convection layer. It has also been used to study natural convection in the Cu/CuSO4, system, furnishing direct experimental proof of the parabolic concentration distribution in the convection layer.
Issue Date:1957
Genre:Dissertation / Thesis
Other Identifier(s):2935234
Publication Status:published or submitted for publication
Rights Information:© 1957 Ralph Sherman Cooper
Date Available in IDEALS:2010-07-22

This item appears in the following Collection(s)

Item Statistics