کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1275182 | 1497556 | 2012 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Modification effect of natural mixed rare earths on Co/γ-Al2O3 catalysts for CH4/CO2 reforming to synthesis gas Modification effect of natural mixed rare earths on Co/γ-Al2O3 catalysts for CH4/CO2 reforming to synthesis gas](/preview/png/1275182.png)
The study first investigated the modification effect of natural mixed rare earths (MRE) on cobalt catalysts for CH4/CO2 reforming to synthesis gas. The Co/γ-Al2O3 catalysts modified with the natural mixed rare earths were synthesized by the impregnation method, and characterized via ICP, BET, XRD, H2-TPR, TEM and TG–DSC techniques. The result showed that the addition of mixed rare earths enhanced the anti-sintering ability of metallic cobalt after reduction and improved anti-coke performance of the catalysts via the synergic effect of mixed rare earths. The 20% Co/γ-Al2O3 catalyst promoted by the appropriate natural mixed rare earths exhibited good activity and stability with low carbon formation at 800 °C for 320 h reaction.
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► Modification effect of natural mixed rare earths on Co/γ-Al2O3 for CH4/CO2 reforming.
► Addition of MRE decreased particle size of Co3O4 and enhanced dispersion of cobalt.
► Modification of MRE increased interaction between cobalt and supports.
► Addition of MRE increased ratio of active carbon and improved anti-coking behavior.
► 0.05MRECo exhibited good activity and stability with low carbon deposition for 320 h.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 13, July 2012, Pages 9994–10001