First, Figure 4.4 is the XRD pattern of the catalyst prepared by treating the precursors for different periods of time in a hydrogen-argon atmosphere at 400°C.
First of all, Figure 4.4 is a catalyst XRD diagram prepared by the precursor body at different time periods using the atmosphere of hydrogen argon at 400 degrees C.
Firstly, figure 4.4 shows the XRD patterns of the catalysts prepared by treating the precursors at 400 ℃ in hydrogen argon atmosphere for different periods of time.<br>