کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6601376 | 459331 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermodynamics of hydride formation and decomposition in electrodeposited Pd-rich Pd-Ru alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Thermodynamics of hydride formation and decomposition in electrodeposited Pd-rich Pd-Ru alloys Thermodynamics of hydride formation and decomposition in electrodeposited Pd-rich Pd-Ru alloys](/preview/png/6601376.png)
چکیده انگلیسی
Thermodynamics of hydride formation and decomposition in electrodeposited Pd-rich (> 90 at.% Pd in the bulk) Pd-Ru alloys was studied in acidic solutions (0.5 M H2SO4) using chronoamperometry. It has been found that for the temperature range 283-328 K the potentials of the α â β and β â α phase transitions are shifted negatively with both increasing temperature and decreasing Pd content in the alloy bulk. Thermodynamic parameters (Gibbs energy, enthalpy and entropy) of the β-phase formation and decomposition were determined. With decreasing Pd bulk content the process of the β-phase formation becomes less exothermic, entropy rises and thermodynamic stability of the β-phase decreases. The heats of hydride formation in Pd-Ru alloys decrease almost linearly with the values of Fermi energies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 48, November 2014, Pages 40-43
Journal: Electrochemistry Communications - Volume 48, November 2014, Pages 40-43
نویسندگان
K. Hubkowska, M. Åukaszewski, A. CzerwiÅski,