EMT-type zeolite nanocrystals synthesized from rice husk

• EMT nanozeolites are prepared in organotemplate-free system at 28 °C.
• Rice husk ash biomass is used as cheap and renewable silica source.
• The nucleation and crystallization of nanozeolites are monitored and studied.
• The nanocrystals have equilateral hexagonal shape and sized of ca. 15 nm.
• The resulting nanocrystals have high pore volume and high external surface area.

Nanosized EMT-type zeolite crystals with a diameter of 15 nm are synthesized from a precursor suspension free of organic template using rice husk ashes (RHA) as a silica source. The crystallization process of the EMT-type zeolite is accomplished within 28 h at 28 °C. The fully crystalline EMT-type zeolite nanoparticles have equilateral hexagonal shape, Si/Al ratio of 1.28 and high crystalline yield of 75%.

Figure optionsDownload as PowerPoint slide