Kinetic modeling of CuO/CeO2 and CuO/Nb2O5 as oxygen carriers in the production of syngas.

Autor: Saddiq, Hassan A., Muhammed-Dabo, Ibrahim A., Hamza, Abba, Waziri, Saidu M.
Zdroj: Reaction Kinetics, Mechanisms & Catalysis; Dec2021, Vol. 134 Issue 2, p727-742, 16p
Abstrakt: Oxygen carriers such as CuO/CeO2 and CuO/Nb2O5 were found to have very good selectivity to syngas products when used in chemical looping reforming. The oxygen carriers with 10% CuO has been applied in partially oxidizing liquefied petroleum gas in a chemical looping reforming process at 800 °C and the kinetic model of the processes were developed and then validated with the experimental data. The results show that first order kinetic, 3D contraction and third order kinetic models gave best fits for CuO/CeO2 powder, CuO/CeO2 pellets and CuO/Nb2O5. These resulted in rate constants of 0.0836 s−1, 0.0202 s−1, 0.1075 s−1 and 0.0682 s−1 for CuO/CeO2 powder, CuO/CeO2 pellets, CuO/Nb2O5 powder and CuO/Nb2O5 pellets. Using the rate constants, the model results were found to give good correlations when compared to experimental data. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index