Morphology control of AlPO₄-5 molecular sieve in mixed-solvents system under microwave irradiation

The morphology control of AlPO₄-5 crystals was achieved by microwave irradiation in mixed-sol vents system. The results show that the aspect ratio of the AlPO₄-5 (c/a) crystals decreases significantly with the increase of the volume ratio of EG to H₂O. Interestingly, the dumbbell shaped AlPO₄-5 crystals can be obtained when the volume ratio of n-butanol to H₂O reaches to 5:1 in the mixed-solvents of n-butanol and H₂O. With the addition of the crystal seeds, the size of the AlPO₄-5 crystals decreases with the increase of the amount of crystal seeds and the stirring time.