کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1280673 | 1645392 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Production of hydrogen by steam reforming of ethanol over a Ni/ZnO catalyst Production of hydrogen by steam reforming of ethanol over a Ni/ZnO catalyst](/preview/png/1280673.png)
In the present work a zinc oxide-supported nickel catalyst was investigated for the steam reforming of ethanol. Comparison was made to the nickel catalysts supported on La2O3La2O3, MgO and γγ-Al2O3Al2O3. Experimental results showed that Ni/ZnO is superior among the catalysts, especially in terms of selectivity and distribution of byproducts. Influential factors, such as reaction temperature, water to ethanol molar ratio, liquid hourly space velocity (LHSV) and Ni loading, were investigated using a Ni/ZnO catalyst. The conversion was always complete at temperatures above 330∘C, regardless of the changes in other reaction conditions. However, the selectivity to hydrogen was increased with the increase in temperature, H2O/EtOHH2O/EtOH molar ratio and Ni loading. A selectivity of up to 95% was reached under conditions of T=650∘C, LHSV=5.0h-1, H2O/EtOHratio=8, and Ni loading=20wt%. The effect of the influential factors on the side reactions and the distribution of byproducts was also discussed.
Journal: International Journal of Hydrogen Energy - Volume 31, Issue 7, June 2006, Pages 877–882