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Advanced Materials

Single Crystals of ZSM-5/Silicalite Composites


  • The authors thank M. Kawashima and the GHAS laboratory at Osaka University for the FE-SEM measurements. M. Miyamoto expresses his special thanks for the center of excellence (21COE) program ‘Creation of Integrated EcoChemistry of Osaka University'.


Thin layers of silicalite-1 were grown on H-ZSM-5 crystals. Silicalite-1 crystals of < 100 nm formed on the ZSM-5 crystals and grew along the crystal surface (see Figure). The single-crystal-like composite catalyst showed excellent para-selectivity of 99 % in the alkylation of toluene with methanol, and is expected to develop as a new shape-selective catalyst.

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