This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.
Permalink
https://hdl.handle.net/2142/16589
Description
Title
Anodic behavior of copper in hydrochloric acid
Author(s)
Cooper, Ralph Sherman
Issue Date
1957
Doctoral Committee Chair(s)
Bartlett, J.H.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
copper
Anodic behavior
Language
en
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.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
