We report the hydrothermal synthesis of SAPO-47 crystals by using n-propylamine (NPA) as template. The resulting product sensitively depends on the gel compositions and synthesis procedure. By optimizing the molar ratio of SiO2/Al2O3, content of HF and NPA, large perfect cubic-shaped SAPO-47 crystals are obtained (size 260 mu m x 260 mu m), at a synthesis temperature of 200 degrees C with a crystallization of 50 h. (C) 2015 Elsevier B.V. All rights reserved.