MFI nanosheets: a rising star in zeolite materials

Zhang, Jiaxing; Ren, Limin; Zhang, Anfeng; Guo, Xinwen; Song, Chunshan

doi:10.1039/d3qm00991b

Cited by 4 publications

(2 citation statements)

References 54 publications

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“…20,21 An appropriate amount of acidic strength and density can provide active sites for the cracking, aromatization, and oligomerization reactions of intermediates in zeolites. 22 The straight channel in the b -axis direction in the structure of ZSM-5 zeolite is the main diffusion channel for aromatic molecules, 23 and reducing the thickness in the b -axis direction is one of the effective ways to improve the diffusivity. 24–26 Therefore, in addition to the choice of catalyst for the first step of the reaction, the selection of the zeolite providing the active site for aromatization and its modulation of morphology, structure and acidity is very critical for the STA performance.…”

Section: Introductionmentioning

confidence: 99%

Enhanced production of aromatics from syngas over CoMnAl oxides combined with b-axis thickness tailored HZSM-5

Guo,

Liu,

Wang

et al. 2024

Mater. Chem. Front.

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Section: Introductionmentioning

confidence: 99%

Enhanced production of aromatics from syngas over CoMnAl oxides combined with b-axis thickness tailored HZSM-5

Guo,

Liu,

Wang

et al. 2024

Mater. Chem. Front.

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“…Beyond zeolite nanocrystals are 2D ultrathin zeolites where the effective domain size is 1–2 unit cells thick, resulting in sheet-like structures. − These materials can be further delaminated or exfoliated to give different stacking arrangements for these zeolite nanosheets. Corma synthesized delaminated ITQ-6 and Ti-ITQ-6 by first making FER in F – media with 4-amino-2,2,6,6-tetramethylpiperidine as an OSDA.…”

Section: Introductionmentioning

confidence: 99%

Synthesis Route to Single-Walled Zeolite Nanotubes Enabled by Tetrabutylammonium Hydroxide

Vallace,

Shah,

Burentugs

et al. 2024

ACS Mater. Au

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Single-walled zeolite nanotubes (ZNT) were recently synthesized in a narrow compositional window. ZNT structural features�thin zeolitic walls and large mesopores�can allow for easy access of small molecules to zeolite micropores, but they also impart processing limitations for these materials, such as challenges with conventional aqueous ion-exchange conditions. Conventional solid-and liquid-phase ion exchange of calcined NaOH-derived ZNT (NaH-ZNT) results in structural degradation to either 2D sheet-like phases, 3D nanocrystals, or amorphous phases, motivating different direct synthesis routes and unconventional ion-exchange procedures of uncalcined ZNT precursors. Here, a modified synthesis route for ZNT synthesis is introduced that facilitates facile ion exchange as well as incorporation of additional non-Al heteroatoms in the zeolite framework. Tetrabutylammonium hydroxide (TBAOH) is used as a hydroxide source and co-OSDA, enabling synthesis of new compositions of ZNT, otherwise unachievable by post-modification of previously reported NaH-ZNT. By varying the gel composition, synthesis temperature, crystallization time, hydroxide source, silicon source, and aluminum source, productive conditions for the new TBAOH synthesis are developed, leading to increased strong acid site density in the ZNT. The collected results demonstrate the sensitivity of the ZNT synthesis to many key parameters and show that the ZNT forms only when Si/(Al + T) ∼ 30 in these synthesis gels and with specific Si and Al sources, and always in the presence of trace Na + . Catalytic testing, via the tandem CO 2 hydrogenation to methanol and methanol to aromatics reaction, shows that ZNTs provide adequate catalytic activity (acidity), relative to their conventional 3D counterparts in converting methanol to aromatic compounds.

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Low-cost and fluoride-free synthesis of MFI zeolite nanosheets with enhanced stability for benzene alkylation with ethanol

Zhu,

Liu,

et al. 2025

Journal of Energy Chemistry

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MFI nanosheets: a rising star in zeolite materials

Abstract: MFI zeolite nanosheets (NSs) not only retain the intrinsic catalytic, adsorption and shape-selective characters of microporous zeolites, but also possess the shortened straight channel length that enhances the access and...

Cited by 4 publications

References 54 publications

Enhanced production of aromatics from syngas over CoMnAl oxides combined with b-axis thickness tailored HZSM-5

Enhanced production of aromatics from syngas over CoMnAl oxides combined with b-axis thickness tailored HZSM-5

Synthesis Route to Single-Walled Zeolite Nanotubes Enabled by Tetrabutylammonium Hydroxide

Low-cost and fluoride-free synthesis of MFI zeolite nanosheets with enhanced stability for benzene alkylation with ethanol

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