A series of AlPO4–B2O3(APB) and Al2O3–B2O3(AlB) systems with various boria loadings (5–30 wt%) were prepared by impregnation of AlPO4with boria from a boric acid solution (methanol or water) and characterized by XRD, SEM-EDX, TG/DTA, XPS, DRIFT and nitrogen adsorption.11B,27Al...