کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7719742 | 1497501 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen evolution and corrosion products on iron cathodes in hot alkaline solution
ترجمه فارسی عنوان
تکامل هیدروژن و محصولات خوردگی روی کاتد آهن در محلول قلیایی داغ
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کلمات کلیدی
الکترولیز آب، سوزاننده داغ کاتد آهن، ورود هیدروژن،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
To better understand the reactivation of nickel cathodes by iron, the study was performed on iron membranes in 25% KOH at 80 °C. Membranes were cathodically treated and anodically polarised, and simultaneously hydrogen permeation was measured with the electrochemical technique. During cathodic potential sweeps, three peaks of current and of hydrogen permeation occurred. The peaks at about â0.80 V and â1.30 V vs. SHE were ascribed to reduction of Fe3O4 to HFeO2â and H+, and of HFeO2â to Fe, respectively. Electric charge of anodic oxidation of cathodically pretreated membranes was by over two orders of magnitude higher than the charge of desorbing hydrogen, and it increased with the pretreatment time. This was ascribed mainly to the oxidation of iron and its corrosion products. It was proposed that the reactivating effect of iron on Ni cathodes can be associated with the enhanced reactivity of iron freshly deposited by reduction of HFeO2â.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 8, 6 March 2014, Pages 3597-3605
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 8, 6 March 2014, Pages 3597-3605
نویسندگان
I. Flis-Kabulska, J. Flis,