Intergrowth Structure and Aluminium Zoning of a Zeolite ZSM-5 Crystal as Resolved by Synchrotron-Based Micro X-Ray Diffraction Imaging

摘要

Zeolites represent an important group of heterogeneous catalysts and are heavily used in the petrochemical and refining industries. Since their discovery, zeolites with MFI topology, namely ZSM-5, have been utilized in a number of large-scale industrial applications. The unique combination of acidic properties and pore architecture enabled their use as solid acid catalysts in the alkylation of arenes, the oligome-rization of light olefins, and the methanol-to-hydrocarbon reaction. The internal crystallographic architecture, micro-and mesoporosity, as well as the 3D distribution of Br0nsted acid sites play a crucial role in the catalytic performance of zeolites.