کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
220696 463346 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemistry of rare earth oxy ions REO+ (RE = Ce, La, Nd) in molten MgCl2–NaCl–KCl eutectic
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrochemistry of rare earth oxy ions REO+ (RE = Ce, La, Nd) in molten MgCl2–NaCl–KCl eutectic
چکیده انگلیسی

The electrochemical behaviour of the Ce, La and Nd oxy ions in MgCl2–NaCl–KCl eutectic was studied using cyclic voltammetry, chronopotentiometry, square wave voltammetry and electrochemical impedance spectroscopy. It has been deduced that the lanthanides are present as REOCl (RE = Ce, La, Nd) in the electrolyte and the reduction of oxychloride ion takes place in a single step according to the reactionREO++1e-→REO(RE=Ce, La, Nd)The reduction of REO+ was found to be reversible at lower scan rates but quasi-reversible at higher scan rates beyond 75 mV s−1. The diffusion coefficients of the rare earth oxy ions evaluated using Berzins Delahay equation were comparable and found to be ∼10−5 cm2 s−1. A single cathodic peak was observed in the square wave voltammograms at lower concentrations of the oxy ion but at higher concentrations, an additional peak was observed at a lower cathodic peak potential which is attributable to the adsorption of the product.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 611, Issues 1–2, 15 December 2007, Pages 181–191
نویسندگان
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