Preparation of Mono-Dispersed MFI-type Zeolite Nanocrystals via Hydrothermal Synthesis in a Water/Surfactant/Oil Solution

摘要

Mono-dispersed silicalite and ZSM-5 type zeolite nanocrystals with a diameter of 80-120 nm were successfully prepared in a surfactant-oil-water solution. The ionicity of the surfactants used in the preparation affected the crystallinity and structure of the silicalite crystals, and silicalite nanocrystals could be obtained when using a nonionic surfactant. By adding an Al source into the synthetic solution, ZSM-5 type zeolite nanocrystals with strong acid sites could be obtained.