کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7709861 | 1497393 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural features and catalytic performance in CO preferential oxidation of MWCNT-supported Pt-Fe catalysts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structural features and catalytic performance in CO preferential oxidation of MWCNT-supported Pt-Fe catalysts Structural features and catalytic performance in CO preferential oxidation of MWCNT-supported Pt-Fe catalysts](/preview/png/7709861.png)
چکیده انگلیسی
Pt-Fe catalysts supported on multi-walled carbon nanotubes (MWCNT) were prepared by an impregnation method assisted with an ultrasonication treatment. The Pt-Fe/CNT catalysts were extensively examined for the preferential oxidation of CO in a H2-rich stream with respect to the influences of Pt/Fe ratios, different support materials and the presence of CO2 and water vapor in the feed stream. The optimized catalyst with a Pt/Fe ratio of 4/0.8 can attain complete CO conversion in a wider temperature range as well as favorable performance under the simulated reformatted gas mixture. It was noticed that the catalytic performance was greatly enhanced for the MWCNT-supported Pt-Fe catalysts in comparison with those supported on Al2O3, SiO2 and other carbon materials. Based on the structural features of the catalysts characterized by XRD, TGA, H2-TPR, TEM and Raman spectroscopy, the enhanced catalytic performance of Pt-Fe/CNT catalysts was discussed in terms of the interactions between Pt-Fe species and MWCNT, as well as the possible bifunctional surface with the presence of both Fe sites of Pt-Fe species and Pt sites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 32, 24 August 2016, Pages 14079-14087
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 32, 24 August 2016, Pages 14079-14087
نویسندگان
Xianfeng Hu, Yuxian Gao, Wendong Wang, Chusheng Chen,