کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5146703 | 1497375 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen absorption properties of carbon supported Pd-Ni nanoalloys
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Carbon supported Pd-Ni nanoalloys with well controlled composition and particle size distribution were synthesized by incipient wetness impregnation method. The Pd-rich nanoalloys (10 and 20 Ni at.%) form a hydride phase at atmospheric pressure and ambient temperature whereas, no hydride formation is observed for higher Ni content (30Â at%), as determined by Pressure-Composition-Isotherms and in situ X-ray diffraction. Significant thermodynamic changes for hydride forming Pd-Ni nanoalloys are noticed as compared to pure Pd, in agreement with the bulk counterparts: the enthalpy of the hydride formation of Pd-Ni nanoalloys decreases by increasing the Ni content. These thermodynamic changes are not related to downsizing of particles but rather to an alloying effect. The solely effects of particle downsizing are the sloping and the shortening of the plateau observed in the PCI curves.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 2, 12 January 2017, Pages 1004-1011
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 2, 12 January 2017, Pages 1004-1011
نویسندگان
Yassine Oumellal, Camelia Matei Ghimbeu, Alicia MartÃnez de Yuso, Claudia Zlotea,