Synthesis of mesoporous molecular sieve SBA-15-PO3H2

SBA-15-PO 3H 2 is prepared using a post-synthetic method. The optimal synthesis conditions are found as follows: calcination temperature 500 °C, calcination time 5 h, stirring time 4 h, and mole ratio of phosphorus and silicon 7: 100. The product is characterized by XRD and SEM/TEM. The results show that the structure of SBA-1 5-PO 3H 2 retains the mesoporous hexagonal structure of SBA-15. It can be reused with high activity for esterification reactions.