Silicon nitride supported nickel catalyst prepared by impregnation using nickel nitrate solution was employed for the carbon dioxide reforming of methane. The catalyst was tested at 800 C under atmospheric pressure. The influences of Ni loading and calcination temperature on the catalytic performanc
Carbon dioxide reforming of methane on modified Ni/α-A12O3 catalysts
✍ Scribed by D. Halliche; R. Bouarab; O. Cherifi; M.M. Bettahar
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 302 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0920-5861
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✦ Synopsis
We have studied the CO2-reforming of methane at atmospheric pressure in the range temperature 550-730°C on Ni/ot-A1203 catalysts modified by Fe, Co, Cu and Ce, respectively. The obtained results show that the activities depend on the CO2/CH 4 ratio, the nature of the metal additives and the reaction temperature. The order of activity is Ni, Ni-Co, Ni-Ce > Ni-Cu >> Ni-Fe. The effect of the additives is attributed to their interaction with the nickel supported active phase. When CH 4 is replaced by H 2 in the presented reaction, no effect of the metal additives on the activities is observed and the CO 2 conversions are sensibly lower. These results let us think that the contribution of the reverse gas shift reaction is less important than expected in the overall process of the methane CO2-reforming.
📜 SIMILAR VOLUMES
Carbon dioxide reforming of methane to synthesis gas has been investigated over supported Ni catalysts in the temperature range of 5004350°C. Addition of CaO ( 10 mol%) promoter to the Nil y-A1203 resulted in an increase of reaction rate and an improvement of catalyst stability, which may be related