Synthesis and Surface Acidity of Alpo4–5 and Sapo–5 Molecular Sieves

Abstract

AbstractAluminophosphate molecular sieves, AlPO4 − 5 and SAPO−5, were synthesized and characterized by XRD, SEM, 29Si and 13C NMR, and TGA. Ammonia TPD indicates the moderately acidic nature of SAPO−5 and the non‐acidic nature of AlPO4−5. The activity of the cumene cracking reaction at 350°C for SAPO−5 is similar to that of LaY, while AlPO4−5 and amorphous AlPO4 show no activity.