کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
50967 | 46824 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Ni–Al2O3 catalysts prepared by solution combustion method for syngas methanation Ni–Al2O3 catalysts prepared by solution combustion method for syngas methanation](/preview/png/50967.png)
Ni–Al2O3 catalysts with varied Ni contents from 10 to 50 wt.% were prepared by solution combustion method for syngas methanation, and characterized by N2 adsorption–desorption, XRD, H2-TPR, SEM and TEM. The results show that the catalytic activity for syngas methanation over the Ni-Al2O3 catalysts is sensitive to Ni particle size and a maximum production rate of methane per unit mass of nickel can be achieved on Ni crystals around 41.8 nm. Moreover, Ni–Al2O3 catalysts with Ni loading above 20 wt.% show good high temperature stability, which is due to Ni particles scattered and spatially isolated by Al2O3.
Figure optionsDownload as PowerPoint slideHighlights
► Ni-Al2O3 catalysts are synthesized by solution combustion method.
► Syngas methanation over Ni-Al2O3 catalysts is a structure sensitivity reaction.
► The highest CO conversion is achieved on around 41.8 nm Ni particle size.
► Ni nanoparticles are scattered and spatially isolated by Al2O3.
Journal: Catalysis Communications - Volume 17, 5 January 2012, Pages 34–38