Hierarchical structured ZSM-5 zeolite of oriented nanorods and its performance in the alkylation of phenol with isopropanol

Hierarchical structured ZSM-5 zeolite of c-axis-oriented nanorods has been prepared by a zeolite-seed-assisted hydrothermal synthesis method without any type of mesoscale template. The final product has loose aggregation which consists of rod-like nanocrystals with widths of about 20–30 nm, formed by the oriented aggregation model. The nitrogen physisorption suggested that the hierarchical structured ZSM-5 zeolite had higher mesopore volume and external surface area than the sample prepared conventionally. Due to the shortened microporous channel and opening mesopore, the prepared HZSM-5 catalyst presents high catalytic activity and stability for the alkylation of phenol with isopropanol.

Graphical abstractHierarchical structured ZSM-5 zeolite of oriented nanorods was prepared by zeolite-seed-assisted hydrothermal synthesis without adding mesoscale template; it presents high catalytic activity and stability for phenol alkylation.Figure optionsDownload full-size imageDownload high-quality image (123 K)Download as PowerPoint slideResearch highlights► ZSM-5 zeolite of nanorods is synthesized hydrothermally by a seed-assisted method. ► ZSM-5 zeolite of aligned nanorods is formed by the oriented aggregation mechanism. ► ZSM-5 zeolite of nanorods brings benefits to the diffusion in catalytic conversions.