کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1269902 | 1497404 | 2016 | 8 صفحه PDF | دانلود رایگان |
• Preparation of mesoporous nanocrystalline La, Ce, Sr and Zr doped γ-Al2O3 powders.
• The novel and simple solid state method was employed for preparation of powders.
• The promoted Ni catalysts has high potential in autothermal reforming.
• The catalysts exhibited high resistance against carbon formation.
• Ce-promoted catalyst exhibited the highest activity among the prepared catalysts.
The promotion effect of La, Ce, Sr and Zr on the catalytic and structural properties of nanocrystalline mesoporous γ-Al2O3 supported Ni catalysts was investigated in autothermal reforming of methane. Mesoporous nanocrystalline γ-Al2O3 powder and promoted ones with high specific surface area (>220 m2/g) were prepared by solid state reaction method and employed as the support for nickel catalysts. The prepared catalysts were subjected to autothermal reforming reaction and characterized by XRD, BET, DR-UV-Vis, TPR, TPO and SEM techniques before and/or after the reaction. The effect of experimental conditions, such as temperature was investigated on the catalysts. Ce promoted catalyst, containing small amounts of CeO2 as a separate phase, was found the most effective catalyst between both promoted and unpromoted ones.
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 21, 8 June 2016, Pages 8855–8862