کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9608160 | 46074 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Catalytic steam reforming of ethanol to produce hydrogen and acetone
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
Steam reforming of ethanol over CuO/CeO2 was studied. Acetaldehyde and hydrogen were mainly produced at 260 °C. At 380 °C, acetone was the main product, and 2 mol of hydrogen was produced from 1 mol of ethanol. The formation of hydrogen accompanied by the production of acetone was considered to proceed through the following consecutive reactions: dehydrogenation of ethanol to acetaldehyde, aldol condensation of the acetaldehyde, and the reaction of the aldol with the lattice oxygen [O(S)] on the catalyst to form a surface intermediate, followed by its dehydrogenation and decarboxylation. The overall reaction was expressed by 2C2H5OH + H2O â CH3COCH3 + CO2 + 4H2. Ceria played an important role as an oxygen supplier. The addition of MgO to CuO/CeO2 resulted in the production of hydrogen at lower temperatures by accelerating aldol condensation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 279, Issues 1â2, 28 January 2005, Pages 273-277
Journal: Applied Catalysis A: General - Volume 279, Issues 1â2, 28 January 2005, Pages 273-277
نویسندگان
Toshiya Nishiguchi, Tomoaki Matsumoto, Hiroyoshi Kanai, Kazunori Utani, Yasuyuki Matsumura, Wen-Jie Shen, Seiichiro Imamura,