Work

A nanoscale investigation of the formation of mesostructured zeolites FAU and LTL

Year: 2024

Type: article

Abstract: Nanostructured materials can be utilised as potential catalysts for the production of platform chemicals and renewable biofuels from biomass derived molecules. The formation of hierarchical meso-microporous zeolites LTL and FAU via the surfactant assisted tandem acid-base post-synthesis treatment has been investigated by time-resolved in situ synchrotron SAXS and WAXS, providing a new insight into the mechanism of the mesostructuring treatment. Based on the results of TEM and in situ synchrotron measurements, a model for the formation of the core-shell structure of LTL zeolite crystals is proposed. Complementary evaluation using FTIR, NMR and nitrogen adsorption, in conjunction with reaction studies on mesostructured zeolites, demonstrated a potential for enhanced catalytic performance of these materials owing to the increased accessibility of the active sites and reduced transport limitations. • Mesostructured zeolites LTL and FAU prepared using the surfactant-templated strategy. • Formation of hierarchical LTL and FAU investigated by time-resolved in situ synchrotron SAXS and WAXS. • The generation of the core-shell structure of LTL crystals is proposed. • The accessibility of active sites of the zeolite catalysts evaluated.

Source: Microporous and Mesoporous Materials

DOI: 10.1016/j.micromeso.2024.113363

Authors: Vladimir Zholobenko, Martin Hollamby, Aqeel Al-Ani, Oleg I. Lebedev, Andrew J. Smith, Tim Snow