Production of hydrogen by ethanol steam reforming over nickel–metal oxide catalysts prepared via urea–nitrate combustion method |
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| Authors: | Wenju Wang Yaquan Wang Yuan Liu |
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| Affiliation: | 1. Key Laboratory of Green Chemical & Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People's Republic of China;2. Tianjin Key Laboratory of Applied Catalysis Science and Engineering, Department of Catalysis Science and Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | A series of Ni/MgO catalysts have been prepared by a urea–nitrate combustion method, studied for the ethanol steam reforming, and compared with Ni/ZnO and Ni/Al2O3. The results show that Ni/MgO is superior to the latter two types of catalysts, especially in terms of H2 yield. Influential factors, including Ni loading, temperature, water‐to‐ethanol molar ratio, and liquid hourly space velocity, are investigated with the Ni/MgO catalyst. The conversions are always complete at temperatures above 773 K, regardless of the changes of the other reaction conditions. The hydrogen yield increases with increasing temperature and H2O/C2H5OH molar ratios, with up to 75% being obtained at 873 K, liquid hourly space velocity (LHSV) of 5.0 ml g–1 h–1 and H2O/C2H5OH molar ratio of 10. Copyright © 2010 John Wiley & Sons, Ltd. |
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| Keywords: | ethanol hydrogen steam reforming nickel urea– nitrate combustion method |
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