Synthesis of small-sized SAPO-34 assisted by pluronic F127 nonionic surfactant and its catalytic performance for methanol to olefins (MTO)

Abstract

Small-sized SAPO-34 was successfully synthesized by using Pluronic F127 nonionic surfactant as growth inhibitor and triethylamine (TEA)/morpholine (Mor) as structure-directing agents (SDA). It was proved that Si distribution and the crystal size changed with the addition of Pluronic F127 in the gel. It was found that the lifetime of the smallest size sample is about four times longer than that of conventional counterparts in the reaction of methanol to olefins (MTO).