کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9759241 | 1497701 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preferential oxidation of carbon monoxide on mounted and unmounted noble-metal catalysts in hydrogen-rich streams
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
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![عکس صفحه اول مقاله: Preferential oxidation of carbon monoxide on mounted and unmounted noble-metal catalysts in hydrogen-rich streams Preferential oxidation of carbon monoxide on mounted and unmounted noble-metal catalysts in hydrogen-rich streams](/preview/png/9759241.png)
چکیده انگلیسی
A number of different noble metal catalysts were studied for activity in the preferential oxidation of carbon monoxide in hydrogen-rich streams. The prepared catalysts had an active phase of platinum, palladium, iridium, ruthenium or rhodium impregnated either directly on an aluminia matrix or mounted on nickel or cobalt oxide. The catalysts were studied for activity, but also for the reversed water gas shift side reaction. The most active catalyst was platinum mounted on cobalt oxide and it was studied closely. The platinum on the cobalt oxide was studied using STEM with XEDS and the effects of the platinum cluster size were investigated. Via microscopy it was possible to show that platinum had no preference for either alumina or cobalt. The activity increased with increasing platinum cluster size but the selectivity passed through a maximum, a probable deactivation mechanism to the catalyst on stream, showed on a 1,000Â h deactivated sample.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 30, Issue 11, September 2005, Pages 1235-1242
Journal: International Journal of Hydrogen Energy - Volume 30, Issue 11, September 2005, Pages 1235-1242
نویسندگان
P.C. Hulteberg, J.G.M. Brandin, F.A. Silversand, M. Lundberg,