کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9610125 | 47167 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Selective oxidation of carbon monoxide in a hydrogen-rich fuel cell feed using a catalyst coated microstructured reactor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Selective oxidation of carbon monoxide in a hydrogen-rich fuel cell feed using a catalyst coated microstructured reactor Selective oxidation of carbon monoxide in a hydrogen-rich fuel cell feed using a catalyst coated microstructured reactor](/preview/png/9610125.png)
چکیده انگلیسی
Carbon monoxide is known to be poisonous to the proton exchange membrane fuel cell catalyst. Selective oxidation of carbon monoxide in a hydrogen-rich reformate stream is considered to be a practical method with the most potential for reducing concentrations down to tolerant levels. In the present work, nine different noble metal catalysts were investigated using a microstructured reactor in the presence of excess hydrogen and carbon dioxide at a GHSV of 15 500 hâ1 and at temperatures up to 160 °C. The most active were Pt-Ru/γ-Al2O3, Rh/γ-Al2O3 and Pt-Rh/γ-Al2O3 yet the most stable was Pt-Rh/γ-Al2O3. Its activity was also investigated using a wet feed and also at a GHSV of 31 000 hâ1. Water was found to promote the catalyst activity while at higher GHSV higher temperatures were required to achieve full carbon monoxide conversion. The catalyst exhibited steady performance in the microstructured reactor for 50 h while reducing 1.12% carbon monoxide to 10 ppm with inlet oxygen to carbon monoxide ratio of 4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 110, Issues 1â2, 15 December 2005, Pages 140-153
Journal: Catalysis Today - Volume 110, Issues 1â2, 15 December 2005, Pages 140-153
نویسندگان
V. Cominos, V. Hessel, C. Hofmann, G. Kolb, R. Zapf, A. Ziogas, E.R. Delsman, J.C. Schouten,