کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7709015 | 1497327 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ni/Ce0.95M0.05O2âd (Mâ¯=â¯Zr, Pr, La) for methane steam reforming at mild conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ni/Ce0.95M0.05O2âd (Mâ¯=â¯Zr, Pr, La) for methane steam reforming at mild conditions Ni/Ce0.95M0.05O2âd (Mâ¯=â¯Zr, Pr, La) for methane steam reforming at mild conditions](/preview/png/7709015.png)
چکیده انگلیسی
Methane obtained from renewable resources such as biogas or biomass gasification may be reformed to produce hydrogen, an important and environmentally friendly energy vector. In the present work, nickel based catalysts supported on either pure or doped ceria (5â¯at% of Zr, Pr or La doping) were studied for this purpose. Catalysts were obtained by impregnation of 5â¯wt% nickel of ceria based supports prepared by coprecipitation by the urea method. Catalysts were calcined at three temperatures (600, 750 or 900â¯Â°C), characterized by different techniques (XRD, H2-TPR, TPO, OSC-OSCC, H2-Chemisorption) and evaluated at different feed conditions and temperatures for methane steam reforming. Catalysts calcined at 900â¯Â°C were tested at three different reaction temperatures (600, 700 and 800â¯Â°C). Higher temperatures favored methane conversion and CO selectivity. For catalysts tested at 600â¯Â°C, increasing vapor/methane ratio caused an increase in hydrogen yield and lowered carbon formation. However, high vapor pressure was seen to favor nickel sintering. Intermediate calcination temperature (750â¯Â°C) enhanced nickel-support interaction leading to maximum methane conversion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 50, 14 December 2017, Pages 29735-29744
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 50, 14 December 2017, Pages 29735-29744
نویسندگان
Ignacio Iglesias, Graciela Baronetti, Fernando Mariño,