Fig. 1
From: Optimizing Al/Zn ratios in K2O/Zn-Aluminate catalysts for enhanced biodiesel production efficiency

XRD patterns of (a): K2O/2Zn-Al2O4, (b): K2O/Zn-Al2O4, (c): K2O/Zn-2Al2O4, and (d): K2O/Zn-4Al2O4.
From: Optimizing Al/Zn ratios in K2O/Zn-Aluminate catalysts for enhanced biodiesel production efficiency

XRD patterns of (a): K2O/2Zn-Al2O4, (b): K2O/Zn-Al2O4, (c): K2O/Zn-2Al2O4, and (d): K2O/Zn-4Al2O4.