Co/CeO2, Ni/CeO2 and Co-Ni/CeO2 catalysts were prepared by surfactant assisted co-precipitation method. Samples were characterized by X-Ray diffraction, BET surface areas measurements, temperature programmed reduction and tested for the dry reforming of methane CH4 + CO2 --> 2CO + 2H2. The bimetallic Co-Ni/CeO2 catalyst showed higher CH4 conversion in comparison with monometallic systems in the whole temperature range, being 50% at 600 °C and 97% at 800 °C. Ni/CeO2 After 20 hours under stream at 750 °C, cobalt-containing catalysts, Co/CeO2 and Co-Ni/CeO2, showed a stable operation in presence of a deposited amorphous carbon of 6 wt.%, whereas Ni/CeO2 showed an 8% decrease of catalytic activity due to a massive presence of amorphous and graphitic carbon (25 wt.%).
Luisetto, I., Tuti, S., Di Bartolomeo, E. (2012). Co and Ni supported on CeO2 as selective bimetallic catalyst for dry reforming of methane. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 37, 15992-15999 [10.1016/j.ijhydene.2012.08.006].
Co and Ni supported on CeO2 as selective bimetallic catalyst for dry reforming of methane
LUISETTO, IGOR;TUTI, SIMONETTA
;
2012-01-01
Abstract
Co/CeO2, Ni/CeO2 and Co-Ni/CeO2 catalysts were prepared by surfactant assisted co-precipitation method. Samples were characterized by X-Ray diffraction, BET surface areas measurements, temperature programmed reduction and tested for the dry reforming of methane CH4 + CO2 --> 2CO + 2H2. The bimetallic Co-Ni/CeO2 catalyst showed higher CH4 conversion in comparison with monometallic systems in the whole temperature range, being 50% at 600 °C and 97% at 800 °C. Ni/CeO2 After 20 hours under stream at 750 °C, cobalt-containing catalysts, Co/CeO2 and Co-Ni/CeO2, showed a stable operation in presence of a deposited amorphous carbon of 6 wt.%, whereas Ni/CeO2 showed an 8% decrease of catalytic activity due to a massive presence of amorphous and graphitic carbon (25 wt.%).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
