کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
221331 463386 2006 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transfer function analysis of hydrogen permeation through a metallic membrane in a Devanathan cell: Part II: Experimental investigation on iron membrane
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Transfer function analysis of hydrogen permeation through a metallic membrane in a Devanathan cell: Part II: Experimental investigation on iron membrane
چکیده انگلیسی

The input impedance Z1(ω) = ΔV1/ΔI1 and the permeation transfer function (PTF) H(ω) = ΔI2/ΔI1 were simultaneously measured during hydrogen permeation through an iron membrane in a conventional electrochemical Devanathan double cell. Various experimental parameters, such as the thickness of the membrane or the polarization potential applied at the input side, were investigated, and their influence were discussed in the light of the model derived in the first part of this paper. In most cases an alkaline electrolyte was used in the input cell. The effect of a thin palladium layer deposited on the output side was also investigated. In acidic medium it was shown that the spontaneous corrosion at rest potential is sufficient to feed hydrogen permeation. At last, thiourea which is known to be a promoter of hydrogen penetration into iron materials, was added to the input solution. The effect of this additive on the evolution/permeation process was investigated by impedance/PTF analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 590, Issue 1, 1 May 2006, Pages 15–25
نویسندگان
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