کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7720704 | 1497504 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced catalytic performance of Au/CuO-ZnO catalysts containing low CuO content for preferential oxidation of carbon monoxide in hydrogen-rich streams for PEMFC
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced catalytic performance of Au/CuO-ZnO catalysts containing low CuO content for preferential oxidation of carbon monoxide in hydrogen-rich streams for PEMFC Enhanced catalytic performance of Au/CuO-ZnO catalysts containing low CuO content for preferential oxidation of carbon monoxide in hydrogen-rich streams for PEMFC](/preview/png/7720704.png)
چکیده انگلیسی
In this study, effects of Au and CuO loadings in Au/CuO-ZnO nanocatalysts for preferential oxidation of carbon monoxide in H2-rich streams (PROX) are investigated. CuO-ZnO supports were synthesized by a co-precipitation method. Au was also incorporated into the catalysts by a deposition-precipitation procedure. The catalysts were characterized by XRD, BET surface area, FESEM, HRTEM, H2-TPR, FTIR, and CO-TPD. 2-10 nm Au nanoparticles are dispersed on CuO-ZnO support and significantly enhance the reducibility of CuO. The Au/CuO-ZnO catalysts containing low amount of CuO were found to be more active for PROX compared to the Au/ZnO catalyst. Moreover, as more CuO is added to Au/ZnO, the CO2 selectivity increases in the whole PROX temperature range. The catalyst containing 2 wt% Au and 1 wt% CuO on ZnO exhibited the highest activity and selectivity in the operating temperature range of PEM fuel cells. The activity of this catalyst also remained almost intact during 900 min of PROX time on stream at 80 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 5, 4 February 2014, Pages 2056-2066
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 5, 4 February 2014, Pages 2056-2066
نویسندگان
Amir Alihoseinzadeh, Abbas Ali Khodadadi, Yadollah Mortazavi,