ZSM-5 Particle Size

ZSM-5 particle size ranges from 50 nm to 5 μm, controlled during hydrothermal synthesis. Particle size affects diffusion, activity, and application fit:

Nanocrystalline ZSM-5 (50–200 nm)

• Significantly reduced diffusion path length — less coke formation, longer catalyst life
• Higher external surface area for bulky molecule accessibility
• Our SMF-30n and SMF-60n are nanocrystalline grades
• Preferred for MTO catalysis and liquid-phase reactions

Submicron ZSM-5 (200–800 nm)

• Good balance of diffusion and handling characteristics
• Easier filtration and processing than nanocrystals
• Standard for most fixed-bed and slurry applications

Micron-scale ZSM-5 (1–5 μm)

• Best filtration and handling properties
• Preferred for catalyst shaping (extrudates, spheres)
• Standard for gas-phase fixed-bed processes

Particle size is measured by laser diffraction (D50). We can customize particle size within the 50 nm–5 μm range — specify your target D50 and distribution width when requesting a sample.