Facile Solvent‐free Synthesis of Hollow Fiber Catalyst Assembled by <i>c–</i>axis Oriented ZSM‐5 Crystals

Abstract

Abstract Well crystallized hollow fibers assembled by c ‐axis oriented ZSM‐5 crystals were successfully synthesized via a facile one‐pot solvent‐free route, using quartz fiber as silicon substrate and NH 4 HCO 3 as the growing inhibitor on the crystal faces. The immigration of silica inside the quartz fibers formed the hollow morphology and the shell of hollow fiber was composed by the ZSM‐5 crystals. In addition, the length of c ‐axis of ZSM‐5 could be controlled by the amount of NH 4 HCO 3 , which selectively inhibited the growth on (010) surface. The obtained ZSM‐5 hollow fibers gave a hierarchical structures composed by micro‐, meso‐ and macropores. Catalytic tests for methanol to gasoline (MTG) revealed that the resultant ZSM‐5 hollow fiber exhibited excellent performance with higher C 5+ selectivity and longer lifetime due to the improved mass transfer inside the unique hollow fiber structure.