Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/71019
Title: Study of adsorption of sodium isopropyl xanthate on galena
Author: Moreno-Medrano, E.D.
Casillas, N.
Cruz, R.
Lara-Castro, R.H.
Larios-Duran, R.
Barcena-Soto, M.
Issue Date: 2011
Abstract: This paper deals with a study of the oxidation processes of the PbS-sodium isopropyl xanthate system in alkaline conditions (pH 8, similar to flotation circuits Pb-Cu) by using cyclic voltammetry and Electrochemical Impedance Spectroscopy (EIS). Three oxidation peaks are identified in the voltammograms that correspond to reactions previously reported in the literature. A plot of the differential capacitance of the double layer vs. potential gives a potential of zero charge (PZC) of -0.31 V vs. SCE for the system, that coincides with an oxidation peak attributed to the adsorption of xanthate. EIS at PZC for different xanthate concentrations evidence an adsorption processes via a charge transfer mechanism under diffusional control. EIS data at potentials more positive than PZC display an inductive loop that is related to a charge transfer processes involving the reaction of the adsorbed intermediates with the consequent modification of the PbS-sodium isopropyl xanthate interface. ©The Electrochemical Society.
URI: http://hdl.handle.net/20.500.12104/71019
Appears in Collections:Producción científica UdeG (prueba)

Files in This Item:
There are no files associated with this item.


Items in RIUdeG are protected by copyright, with all rights reserved, unless otherwise indicated.