| 초록 |
The dry reforming of propane with CO2 was carried out in a thermo-catalytic reactor. The catalytic performance of AAO supported catalysts with various nickel and Ceria loadings at different reaction temperatures. The obtained results show that both C3H8 and CO2 conversions increased with increasing ceria loading up to 80% and 20% NiO/CeO2-AAO catalysts showed the highest activity for dry reforming reaction. The prepared catalysts were characterized by XRD, FESEM, TEM, EDX dot-mapping, and BET analysis. The results of catalyst testing revealed that the catalysts with higher ceria loading catalyst NiO (0.2M) +CeO2 (0.8M) have superior catalytic performance for activity and stability than other loading. Although Ni-based catalysts have been intensively employed in reforming reactions, they commonly suffer severe deactivation due to sintering of metal particles and carbon deposition. After 12 h under stream at 540oC, CeO2/AAO catalysts, showed a stable operation in presence of a deposited amorphous carbon. The main advantage of a plated catalyst is effective heat exchange and the formation of the NiO and CeO2–bimetallic oxides on AAO support, which brings about the improvement in catalytic activity |
