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Biomass-mediated ZSM-5 zeolite synthesis: when self-assembly allows to cross the Si/Al lower limit†
Chemical Science ( IF 7.6 ) Pub Date : 2018-07-05 00:00:00 , DOI: 10.1039/c8sc01675e
Marcelo Maciel Pereira 1 , Elisa Silva Gomes 1 , Alessandra Vieira Silva 1 , Ana Belen Pinar 2 , Marc-Georg Willinger 3 , Sangaraju Shanmugam 4 , Céline Chizallet 5 , Guillaume Laugel 6 , Pit Losch 7 , Benoît Louis 7
Affiliation  

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 un-expected 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.

中文翻译:


生物质介导的 ZSM-5 沸石合成:当自组装允许跨越 Si/Al 下限†



根据生物质介导的超分子方法制备了 Si/Al = 8 ± 0.5 的富铝 ZSM-5 沸石家族。先进的表征技术和周期密度泛函理论 (DFT) 计算相结合,揭示了意想不到的富铝 ZSM-5 结构的纯度和稳定性,从而跨越了 Si/Al 下限的前沿。此外,这些富铝ZSM-5沸石在正己烷裂化和甲醇转化为碳氢化合物方面表现出高催化活性,这与大量布朗斯台德酸中心的存在相一致。
更新日期:2018-07-05
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