In-situ synthesis of KAUST-7 membranes from fluorinated molecular building block for H2/CO2 separation

Lv, Jinyin; Zhou, Xiong; Yang, Jianhua; Wang, Lei; Lu, Jinming; He, Gaohong; Dong, Yingchao

doi:10.1016/j.memsci.2022.120585

Cited by 9 publications

(1 citation statement)

References 66 publications

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“…The H 2 /CO 2 separation performance was compared with that of previous membrane materials, including MOFs, zeolites, and two‐dimensional (2D) materials (Figure 3e and Table S2) [33–70] . Ideal separation performance (marked with a black star) of the ZIF‐8/GNR/alumina(300) membrane surpasses the upper bounds of reported polycrystalline MOF membrane performance and is located in the state art range of 2D materials‐based membranes (e.g.…”

Section: Resultsmentioning

confidence: 96%

Graphene Nanoribbon Hybridization of Zeolitic Imidazolate Framework Membranes for Intrinsic Molecular Separation

Choi

Kim

et al. 2022

Angew Chem Int Ed

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Zeolitic imidazolate frameworks (ZIFs) are promising for gas separation membrane, but their molecular cut-off differs from that expected from its intrinsic aperture structure because of their flexibility. Herein, we introduced graphene nanoribbons (GNRs) to rigidify the ZIF framework. Because the sp 2 edge of the GNRs induces strong anchoring effects, the modified layer can be rigidified. Particularly, when the GNRs were embedded and distributed in the ZIF-8 layer, an intrinsic aperture size of 3.4 Å was observed, resulting in high H 2 /CO 2 separation (H 2 permeance: 5.2 × 10 À 6 mol/ m 2 Pa s, ideal selectivity: 142). The performance surpasses the upper bound of polycrystalline MOF membrane performance. In addition, the membrane can be applied to blue H 2 production, as demonstrated with a simulated steam reformed gas containing H 2 /CO 2 /CH 4 . The separation performance was retained in the presence of water. The fundamentals of the molecular transport through the rigid ZIF-8 framework were revealed using molecular dynamics simulations.

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Section: Resultsmentioning

confidence: 96%

Graphene Nanoribbon Hybridization of Zeolitic Imidazolate Framework Membranes for Intrinsic Molecular Separation

Choi

Kim

et al. 2022

Angew Chem Int Ed

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Graphene Nanoribbon Hybridization of Zeolitic Imidazolate Framework Membranes for Intrinsic Molecular Separation

Choi

Kim

et al. 2022

Angewandte Chemie

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Zeolitic imidazolate frameworks (ZIFs) are promising for gas separation membrane, but their molecular cut‐off differs from that expected from its intrinsic aperture structure because of their flexibility. Herein, we introduced graphene nanoribbons (GNRs) to rigidify the ZIF framework. Because the sp2 edge of the GNRs induces strong anchoring effects, the modified layer can be rigidified. Particularly, when the GNRs were embedded and distributed in the ZIF‐8 layer, an intrinsic aperture size of 3.4 Å was observed, resulting in high H2/CO2 separation (H2 permeance: 5.2×10−6 mol/m2 Pa s, ideal selectivity: 142). The performance surpasses the upper bound of polycrystalline MOF membrane performance. In addition, the membrane can be applied to blue H2 production, as demonstrated with a simulated steam reformed gas containing H2/CO2/CH4. The separation performance was retained in the presence of water. The fundamentals of the molecular transport through the rigid ZIF‐8 framework were revealed using molecular dynamics simulations.

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Dual-module integration of large-area tubular 2D MXene membranes for H2 purification

Luo,

Zhao,

Wei

et al. 2024

Chemical Engineering Science

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In-situ synthesis of KAUST-7 membranes from fluorinated molecular building block for H2/CO2 separation

Cited by 9 publications

References 66 publications

Graphene Nanoribbon Hybridization of Zeolitic Imidazolate Framework Membranes for Intrinsic Molecular Separation

Graphene Nanoribbon Hybridization of Zeolitic Imidazolate Framework Membranes for Intrinsic Molecular Separation

Graphene Nanoribbon Hybridization of Zeolitic Imidazolate Framework Membranes for Intrinsic Molecular Separation

Dual-module integration of large-area tubular 2D MXene membranes for H2 purification

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