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A series of AlPO 4 –ZrO 2 (APZr) systems with various zirconia loadings (5–50 wt%) were prepared by sol–gel deposition of zirconia onto AlPO 4 and characterized by TGA/DTA, XRD, DRIFT, laser-Raman spectroscopy, SEM–EDX, XPS, 27 Al and 31 P MAS NMR, and nitrogen adsorption. Surface acid characterization was carried out through pyridine chemisorption and cyclohexene...
A series of AlPO 4 –B 2 O 3 (APB) and Al 2 O 3 –B 2 O 3 (AlB) systems with various boria loadings (5–30 wt%) were prepared by impregnation of AlPO 4 with boria from a boric acid solution (methanol or water) and characterized by XRD, SEM-EDX, TG/DTA, XPS, DRIFT and nitrogen adsorption. 11 B, 27 Al, and 31 P MAS...
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