کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7714560 | 1497439 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen production by high temperature water gas shift reaction over highly active and stable chromium free Fe-Al-Ni catalysts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hydrogen production by high temperature water gas shift reaction over highly active and stable chromium free Fe-Al-Ni catalysts Hydrogen production by high temperature water gas shift reaction over highly active and stable chromium free Fe-Al-Ni catalysts](/preview/png/7714560.png)
چکیده انگلیسی
High temperature water gas shift reaction is carried out over nanocrystalline chromium free Fe2O3-Al2O3-NiO catalysts with and without alkaline earth promoters. Mesoporous catalysts are prepared by coprecipitation method. The prepared catalysts are characterized using N2 adsorption (BET), temperature-programmed reduction (TPR) and desorption (TPD), X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. The results indicate that alkaline earth promoters improve the catalytic activity and suppress the progress of methanation reaction, which is related to the increment of amount in weakly basic sites through promoter addition. Furthermore, it is found that the Fe2O3-Al2O3-NiO catalyst promoted by Ba exhibits the highest catalytic activity and the lowest methanation among the prepared catalysts and the commercial chromium containing one. In addition, the effect of Ba content on the CO conversion is investigated and the results indicate that the catalyst with 3Â wt.% Ba possesses high activity and stability without any decrease in CO conversion during 50Â h time on stream.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 34, 14 September 2015, Pages 10867-10875
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 34, 14 September 2015, Pages 10867-10875
نویسندگان
Fereshteh Meshkani, Mehran Rezaei,