Best Zeolite for MTP

ZSM-5 is the catalyst of choice for MTP — in practice, the only commercial option. Its 10-MR MFI channels provide shape-selective constraints that favour propylene formation, and its tunable Si/Al ratio and crystal morphology allow the catalyst to be optimised specifically for propylene selectivity. No other zeolite framework has demonstrated commercial MTP performance.

Why ZSM-5 Dominates MTP

ZSM-5 Optimisation Parameters for MTP

Si/Al ratio is the primary optimisation parameter. Higher SAR (100-300) reduces acid site density, suppressing hydrogen transfer reactions that consume propylene to form paraffins and aromatics. MTP typically operates at higher SAR than general MTO ZSM-5 because the higher temperature favours propylene in the olefin interconversion network.

Crystal size affects diffusion and product selectivity. Smaller ZSM-5 crystals (100-500 nm) reduce diffusion path length, lowering secondary reactions of propylene to aromatics and coke. Nano-ZSM-5 is preferred for MTP when maximum propylene selectivity is the goal.

ZC-MTP-1: Pre-Formulated MTP Catalyst

ZeoCatalyst supplies ZC-MTP-1, a proprietary ZSM-5-based catalyst formulated specifically for MTP: optimised Si/Al ratio (150-300), alumina binder for high mechanical strength in fixed-bed reactors, extended catalyst life through controlled acid site density, and customisable extrudate diameter matched to reactor pressure drop. See the ZC-MTP-1 product page for specifications.

When requesting a sample, specify your target Si/Al ratio, preferred crystal size, reactor configuration, and whether you need H-form powder, NH₄-form precursor, or pre-formulated ZC-MTP-1 extrudates.