Alcohol-assisted synthesis of high-silica zeolites in the absence of organic structure-directing agents

In this work, we show for the first time that high-silica zeolites (MFI, TON, MTT, and *MRE) could be synthesized from a combined strategy of both zeolite seeding alcohol filling in absence organic structure-directing agents (OSDAs). High-silica ZSM-5 with Si/Al ratios ranging 38 to 240 (TF-Al-ZSM-5) via route. The key success technique was employment an aluminosilicate precursor fully 4-coordinated aluminum species as initial source, wherein rearrangement condensation silicate species, rather than aluminate occurred during crystallization. addition, heteroatoms, such Fe B, incorporated into frameworks. Catalytic tests methanol-to-propylene (MTP) reaction exhibited good catalytic performance TF-Al-ZSM-5, which comparable OSDAs. Hence, method offers viable opportunities industrial production application future.