Biomass-mediated ZSM-5 zeolite synthesis: when self-assembly allows to cross the Si / Al lower limit

Abstract : A family of Al-rich ZSM-5 zeolites with Si / Al = 8 ± 0.5 was prepared according to a biomass-mediated supramolecular approach. A combination of advanced characterisation techniques and periodic density functional theory (DFT) calculations unraveled the purity and stability of unexpected Al-enriched ZSM-5 structures, hence allowing to cross the frontier of Si / Al lower limit. In addition, these Al-rich ZSM-5 zeolites demonstrated high catalytic activity in n-hexane cracking and methanol conversion into hydrocarbons, being in line with the presence of numerous BrØnsted acid sites.
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Marcelo Maciel Pereira, Elisa Gomes, Alessandra Vieira Silva, Ana Belen Pinar, Marc-Georg Willinger, et al.. Biomass-mediated ZSM-5 zeolite synthesis: when self-assembly allows to cross the Si / Al lower limit. Chemical Science , The Royal Society of Chemistry, 2018, 9 (31), pp.6532 - 6539. ⟨10.1039/C8SC01675E⟩. ⟨hal-01882119v1⟩

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