کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
598717 1454098 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical kinetic study of surface layer growth on natural pyrite in acid medium
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Electrochemical kinetic study of surface layer growth on natural pyrite in acid medium
چکیده انگلیسی

This paper presents electrochemical experiments on natural pyrite that combine potentiostatic and voltammetric techniques. X-ray microanalysis is used as an auxiliary technique. The layer growth on pyrite surface is conducted in a wide range of pH and potential range: 3.4 ≤ pH ≤ 5.9 with E = 0.80 V (versus SHE), and 0.80 V ≤ E ≤ 1.00 V with pH 4.5 (versus SHE) in acetic acid–acetate buffer. This work is unique for two reasons: (1) phenomenological model about layer growth is applied and mathematical-physic consistence is verified and (2) Meyer's hypotheses of chemical mechanism are used to explain kinetic parameters of the phenomenological model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 272, Issues 1–2, 5 January 2006, Pages 130–138
نویسندگان
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