کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147688 | 1497387 | 2016 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen production by ethanol steam reforming over multimetallic RhCeNi/Al2O3 structured catalyst. Pilot-scale study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A new multimetallic RhCeNi/Al2O3 catalyst structured in cylindrical pellet with an atomic ratio Ce/Ni = 0.55 and minimal Rh content was developed and tested in ethanol steam reforming (ESR) at laboratory and semi-industrial pilot plant scales. A beneficial interaction for the major components, Ce-Ni, is noticed. Ce is mostly present as Ce4+ and Ce3+ and the incorporation of small amount of Ni2+ species into the ceria fluorite-type structure is registered since an oxygen coordination disorder was induced by the Ni2+ dissolution that modifies the average size of particles. RhCeNi catalyst is active in the ESR even at different steam/ethanol ratio between 4 and 10 at laboratory scale and is also very active and stable at pilot-plant scale tested at S/EtOH ratio = 7, with a high H2-yield (95% at 700 °C) and minimal presence of secondary products as acetone or ethylene and ethane. CO selectivity is maintained below of 5-7% in the reformer gas-out stream, although it is further reduced to reach acceptable values after WGS and CO-PROX-units to feed the PEM located downstream of the installation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 38, 15 October 2016, Pages 16786-16796
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 38, 15 October 2016, Pages 16786-16796
نویسندگان
R. González-Gil, C. Herrera, M.A. Larrubia, F. Mariño, M. Laborde, L.J. Alemany,