کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
51176 | 46834 | 2009 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of MgO addition on the basicity of Ni/ZrO2 and on its catalytic activity in carbon dioxide reforming of methane Effect of MgO addition on the basicity of Ni/ZrO2 and on its catalytic activity in carbon dioxide reforming of methane](/preview/png/51176.png)
The effect of the MgO content on the basicity and on the catalytic performance of Ni/ZrO2–MgO catalysts for carbon dioxide reforming of methane was studied. MgO addition to the zirconia support by co-precipitation (5% MgO) had several effects: stabilized the zirconia tetragonal phase by increasing its thermal stability, increased the basicity of the support, and decreased the reducibility of Ni2+. The CO2 desorption energy distribution functions calculated from the TPD-CO2 profiles were centred at activation energies around 100–134 kJ mol−1. Besides the effect due to the modification of the zirconia properties by MgO addition, the catalytic activity was also related to the reduction degree of nickel on Ni/ZrO2–MgO catalysts, while the catalyst stability was related to the basic properties of the supports.
Journal: Catalysis Communications - Volume 11, Issue 4, 15 December 2009, Pages 240–246