کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147458 | 1497382 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photocatalytic H2 production from ethanol(aq) solutions: The effect of intermediate products
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The production of H2 via the photocatalytic transformation of aqueous solutions of ethanol, over Pt/anatase was studied in a semi-batch reactor. High H2/COx ratios were obtained indicating that the photoreforming of ethanol only occurred in a small proportion of the ethanol. The main products detected in the liquid phase after the photocatalytic conversion of ethanol solutions were acetaldehyde, acetic acid and 2,3-butanediol, with acetaldehyde being the most abundant. The photoreaction of acetaldehyde(aq), acetic acid(aq) or 2,3-butanediol(aq) resulted in lower amounts of H2 compared with that of ethanol(aq). The main reaction pathway for the photocatalytic transformation of acetaldehyde(aq) is via the formation of acetic acid and H2. Then, CO2 and CH4 are formed from the decomposition of acetic acid(aq). The decrease in the H2 production rate during the photocatalytic reforming of ethanol solutions is related to the presence of the intermediate products formed in the liquid phase that are not removed from the reaction medium. Carboxylate species and metallic Pt were present on the surface of the post-reaction catalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 43, 16 November 2016, Pages 19629-19636
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 43, 16 November 2016, Pages 19629-19636
نویسندگان
A.C. Sola, N. Homs, P. RamÃrez de la Piscina,