Low-temperature synthesis of MgxCo1-xCo2O4 spinel catalysts for N2O decomposition

摘要: Low-temperature synthesis of spinels Mg x Co1-x Co2O4 (x= 0.0− 0.9) has been investigated with two important synthetic parameters and XRD/FTIR/DSC/BET/ICP/CHN methods. It is found that with an increase in hydrothermal treatment temperature, precursor compounds change from the hydrotalcite-like to brucite-like and then to cubic spinel phase when the initial metal concentration ratio [Mg2+]:[Co2+]≥ 1, while from the turbostratic to hydrotalcite-like and then to cubic spinel phase when the [Mg2+]:[Co2+]< 1. The Mg x Co1-x …