Highly-selective MOF-303 membrane for alcohol dehydration

Lai, Jun-Yu; Wang, Ting-Yuan; Zou, Changlong; Chen, Jiun-Jen; Lin, Lu; Kang, Dun‐Yen

doi:10.1016/j.memsci.2022.120879

Cited by 26 publications

(20 citation statements)

References 87 publications

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“…10,52 Ideally, if the channel in a MOF possesses uniform width and homogeneous and strong adsorption surface, it would simultaneously maximize the solubility and the diffusion coefficient (Figure 2d). A recent study of the MOF-303 membrane 63 suggests that this material possesses high adsorption and diffusion coefficients for water owing to its strong but homogeneous adsorption surface for water (Figure 2e,f). As the MOF community has developed knowledge of having an adsorption site that is selective to a specific gas, paying attention to the distribution of these adsorption sites would a MOF with adsorptions sites (in yellow) in the cage, and (c) a MOF with adsorptions sites at the bottleneck.…”

Section: ■ Pure Mof Membranesmentioning

confidence: 94%

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Challenges in Developing MOF-Based Membranes for Gas Separation

Kang

Lee

2023

Langmuir

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Metal–organic frameworks (MOFs) are promising candidates for membrane gas separation. MOF-based membranes include pure MOF membranes and MOF-based mixed matrix membranes (MMMs). This Perspective discusses the challenges for the next stage of the development of MOF-based membranes based on research conducted in the past decade. We focused on three major issues associated with pure MOF membranes. First, some MOF compounds have been overstudied, despite the availability of numerous MOFs. Second, gas adsorption and diffusion in MOFs are often independently investigated. The correlation between adsorption and diffusion has seldom been discussed. Third, we identify the importance of characterizing the gas distribution in MOFs to understand the structure–property relationships for gas adsorption and diffusion in MOF membranes. For MOF-based MMMs, engineering the MOF–polymer interface is essential for achieving the desired separation performance. Various approaches to modify the MOF surface or polymer molecular structure have been proposed to improve the MOF–polymer interface. Herein, we present defect engineering as a facile and efficient approach for engineering the MOF–polymer interfacial morphology and its extended application for various gas separations.

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Section: ■ Pure Mof Membranesmentioning

confidence: 94%

“…Water presents the high adsorption, diffusion, and permeation coefficients in MOF-303 membranes, as demonstrated in the pervaporation tests. (e) is reproduced with permission from ref . Copyright 2022 Elsevier.…”

Section: Pure Mof Membranesmentioning

confidence: 99%

Challenges in Developing MOF-Based Membranes for Gas Separation

Kang

Lee

2023

Langmuir

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“…Milestone works of polycrystalline MOF membranes for PV [MIL-53, MOF-5, ZIF-8, Ni 2 ( l -Asp) 2 (bipy), ZIF-71, ZIF-78, ZIF-68, UiO-66, UiO-66-NH 2 , MIL-160, CAU-10-H, Sm-DOBDC, Zn-aip-azpy, Zn/Co-ZIF, HLI, MOF-303-urea, Al-bttotb, ZIF-67, and MIL-53].…”

Section: Methodsmentioning

confidence: 99%

“…As expected, the dense membrane showed an outstanding water/IPA separation factor (>1000) based on the sieving effect of the membrane channel. Wang et al synthesized heterolattice intergrown HLI membranes, which showed the ultrahigh separation factor of water over ethanediol (>13 000) and performed well in stability tests for ≤600 h. Due to the high hydrophilicity and diffusion barrier to alcohol diffusion, MOF-303-urea membranes performed excellently in separating water from ethanol and isopropanol, and the separation factors of water/ethanol and water/isopropanol were 55349 and 3801, respectively . Sun et al innovatively synthesized ultrathin ZIF-67 membranes (176 ± 12 nm) using a hydroxyl salt-induced synthesis method.…”

Section: Methodsmentioning

confidence: 99%

“…PV performance of polycrystalline MOF membranes: (a) dehydration of ethanol, (b) dehydration of organics (excluding ethanol), (c) recovery of organics from water, (d) organic/organic separation with the same carbon number, (e) organic/organic separation with different carbon numbers, and (f) water desalination. The figures were created on the basis of the data listed in Table S4. ,− ,− ,,,,− ,− …”

Section: Pv Performance Of Polycrystalline Mof Membranesmentioning

confidence: 99%

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Polycrystalline Metal–Organic Framework Membranes for Pervaporation

Wang

Yan

Liu

2023

Ind. Eng. Chem. Res.

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Pervaporation (PV) is an emerging membrane technology for liquid separations due to its small carbon footprint. Recently, a large number of metal−organic frameworks (MOFs) have been employed as membrane materials for PV. Herein, advances in polycrystalline MOF membranes for PV are reviewed. The structural characteristics (10 MOFs), fabrication methods (five types), and PV applications (four kinds) of polycrystalline MOF membranes are intensively studied, and their relationships are established. Finally, a perspective on membrane structure, performance, large-scale production, and operation stability under industrial conditions is proposed.

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Ligand‐engineered Zr‐MOF membranes with fast water transport channels for alcohol–water separation

Mo,

Jin,

Zhou

et al. 2024

AIChE Journal

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Metal–organic framework (MOF) membranes with rich functionality and a tunable pore system are promising for molecular separation. However, an inadequate pore microenvironment and low water stability may hamper the extension of their use in gas separation to liquid separation (e.g., organic solvent dehydration). In this study, we report a high‐valence Zr‐MOF membrane with high stability and tunable pore microenvironment, prepared using a mixed‐ligand strategy based on fumarate (fum) and 2‐methylfumarate (mes) ligands for the pervaporation dehydration of alcohols. The introduction of a methyl group in the ligand side chain narrowed the aperture size while balancing the hydrophilicity, thus facilitating the fast and selective permeation of water over alcohol molecules. The resulting mes/fum‐Zr‐MOF membrane with a mes content of 30% displayed excellent butanol/water separation performance with total flux of 5226 g−1·m−2·h−1, separation factor of 1281, and water content of 99.3% in the permeate, transcending the upper‐bound of state‐of‐the‐art MOF and polymer membranes, thereby exhibiting immense potential for alcohols dehydration.

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Highly-selective MOF-303 membrane for alcohol dehydration

Cited by 26 publications

References 87 publications

Challenges in Developing MOF-Based Membranes for Gas Separation

Challenges in Developing MOF-Based Membranes for Gas Separation

Polycrystalline Metal–Organic Framework Membranes for Pervaporation

Ligand‐engineered Zr‐MOF membranes with fast water transport channels for alcohol–water separation

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