کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
221066 463369 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the use of electrochemical techniques to monitor free oxide content in molten fluoride media
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
On the use of electrochemical techniques to monitor free oxide content in molten fluoride media
چکیده انگلیسی

The electrochemical behaviour of oxide ions has been studied in fluoride melts (LiF/NaF eutectic) by cyclic voltammetry, square wave voltammetry and chronopotentiometry. The purpose is to determine whether these techniques can be used for titration of free oxide ions (O2−) in molten fluorides released by lithium oxide additions. Cyclic voltammetry is shown to be unsuitable for this purpose due to oxygen bubbling disturbing the oxidation peak, while square wave voltammetry is far more appropriate because the observed signal is a well defined oxidation peak with a height proportional to the oxide content. Thus, the present work is focused on a strategy of oxide ions titration by square wave voltammetry. In addition, this work allows assessing that the electrochemical reduction of oxide ions is diffusion controlled, and the O2− diffusion coefficient is estimated by chronopotentiometry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 606, Issue 1, 1 August 2007, Pages 17–23
نویسندگان
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