Meyyappan, R.M. and Ramachandran, P. and Venkateswaran, K.V. and Srinivasan, R. (1986) Catalytic anodes in electrowinning - inhibition of poisoning by manganese ions: Part II. Galvanic studies. Bulletin of Electrochemistry , 2 (6). pp. 643-645. ISSN 0256-1654

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The deactivation of catalytic anode caused by Mn2+ ion in electrowinning electrolytes has been studied under galvanostatic conditions. Gradual anode potential rise in presence of Mn2+ ion indicates the deterioration in the catalytic activity as a result of Mno2 formation on the electrode surface. The addition of soluble phosporous or arsenic compounds is found to restrict the rise in anode potential. Current efficiency studies made for Mno2 deposition in presence of arsenic or phosporous compound confirm the inhibiting tendency of these surface active substance on Mno2 formation. Surface characterization of polarised electrodes has also been made using scanning electron microscope.

Item Type: Article
Uncontrolled Keywords: Catalytic anodes; electrowinning; galvanostatic studies; inhibition of Mn2+
Subjects: Industrial Metal Finishing
Depositing User: ttbdar CECRI
Date Deposited: 21 Mar 2012 02:36
Last Modified: 21 Mar 2012 02:42

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