AVS 49th International Symposium
    Electrochemistry and Fluid-Solid Interfaces Tuesday Sessions
       Session EC-TuP

Paper EC-TuP2
Electrochemical Characterization and Preparation of Nanoporous Model Catalysts Produced from the Alloy Cu@sub 77@Zn@sub 12@Mn@sub 7@Ni@sub 4@

Tuesday, November 5, 2002, 5:30 pm, Room Exhibit Hall B2

Session: Poster Session
Presenter: M. Kesmez, Lamar University
Authors: M. Kesmez, Lamar University
M.A. Hossain, Lamar University
D.E. Mencer, Wilkes University
H. McWhinney, Prairie View A&M University
D.L. Cocke, Lamar University
Correspondent: Click to Email
In a research program to explore the preparation of model catalysts by the electrochemical oxidation of alloys, we have examined the oxidation of the Cu@sub 77@Zn@sub 12@Mn@sub 7@Ni@sub 4@ alloy to produce a nanoporous copper manganese oxide catalyst with supported nickel. This has been accomplished by the selective dezinfication of the alloy under oxidative potential control. The electrochemical properties of the alloy have been examined by cyclic voltammetry and linear sweep voltammetry to establish the mechanisms of corrosion and the characteristics of the oxidized films. The electrochemical characteristics needed for catalyst design will be delineated. The structural and chemical properties of the product films have been examined by SEM and XPS before and after thermal treatments to produce the active catalysts. The electrochemical preparation of the model hopcalite catalyst will be discussed in terms of the previous preparation of the catalyst by thermal and plasma chemical means. The potential of electrochemically controlled dezinfication of this type alloy will be discussed for the production of new nanoporous model catalysts.