کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1295026 | 973654 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of magnesium on preferential oxidation of carbon monoxide on platinum catalyst in hydrogen-rich stream
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of magnesium on preferential oxidation of carbon monoxide on platinum catalyst in hydrogen-rich stream Effect of magnesium on preferential oxidation of carbon monoxide on platinum catalyst in hydrogen-rich stream](/preview/png/1295026.png)
چکیده انگلیسی
The effects of magnesium on platinum catalyst used for the preferential oxidation of carbon monoxide for polymer electrolyte membrane fuel cell applications are investigated. The CO conversion and selectivity on Pt–Mg/Al2O3 for a H2-rich stream are 93.1 and 62.0%, respectively, but only 70.2 and 46.89% on Pt/Al2O3. The superior activity of Pt–Mg/Al2O3 for the preferential oxidation of CO is due to an increase in the hydroxyl groups that results from an increase in basicity with the addition of Mg, as well as to an increase in the electron density on the surface of the Pt catalyst. Moreover, the content of hydroxyl groups on the Pt catalysts is promoted by water vapour.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 156, Issue 2, 1 June 2006, Pages 260–266
Journal: Journal of Power Sources - Volume 156, Issue 2, 1 June 2006, Pages 260–266
نویسندگان
Sung-Ho Cho, Jong-Soo Park, Seung-Hoon Choi, Sung-Hyun Kim,