کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1281210 1497636 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of PdNiO/C catalyst for methanol electrooxidation
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Investigation of PdNiO/C catalyst for methanol electrooxidation
چکیده انگلیسی

The methanol electrooxidation reaction was studied on carbon dispersed Pd-nickel oxide nanocatalysts in KOH/CH3OH solutions. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used to characterize PdNiO/C catalysts. The electrochemical behaviors for the methanol electrooxidation reaction were measured in a powder microelectrode by cyclic voltammetry and Tafel plots. The result showed that the adding NiO enhances the anti-poison ability of PdNiO/C catalyst, but the reaction mechanism does not change. The anti-poison ability of PdNiO/C catalyst can be enhanced by three ways: (1) the NiOOH on the surface of catalyst improves the activity of composite catalyst for methanol oxidation; (2) the catalytic role of NiO for methanol dehydration; (3) the promotion of large amount active species-PdO (low oxidation state) for methanol oxidation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 34, Issue 6, March 2009, Pages 2758–2764
نویسندگان
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