Introducing high concentration of hexafluorosilicate anions into an ultra-microporous MOF for highly efficient C2H2/CO2 and C2H2/ C2H4 separation

Article Chemistry, Multidisciplinary

Fine-tuning of pore-space-partitioned metal-organic frameworks for efficient C2H2 /C2H4 and C2H2 /CO2 separation

Xiaobing Mu et al.

Summary: Four novel MOFs were designed and synthesized with excellent C2H2 adsorption capabilities and efficient separation from CO2 and C2H4. SNNU-278 displayed a high C2H2 uptake.

CHINESE CHEMICAL LETTERS (2023)

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Review Chemistry, Multidisciplinary

Metal-Organic Frameworks for Greenhouse Gas Applications

Anrui Dong et al.

Summary: Using petrol or burning coal generates GHG emissions, and metal-organic frameworks (MOFs) have been extensively used in GHG-related applications. Porous MOF materials and their derivatives have shown great potential for GHG separation, storage, and conversion due to their easy preparation, large porosity, adjustable nanostructure, abundant topology, and tunable physicochemical property. Progress has been made in GHG storage and separation based on the interaction between guest molecules and MOF frameworks. The review highlights existing challenges and future directions for the rational design, synthesis, and utilization of MOFs and their derivatives for practical applications.

SMALL (2023)

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Article Chemistry, Multidisciplinary

A Robust Molecular Porous Material for C2H2/CO2 Separation

Mei-Yan Gao et al.

Summary: A molecular porous material, MPM-2, comprised of cationic [Ni-2(AlF6)(pzH)(8)(H2O)(2)] and anionic [Ni2Al2F11(pzH)(8)(H2O)(2)] complexes that generate a charge-assisted hydrogen-bonded network with pcu topology is reported. MPM-2 exhibits excellent stability in both water and organic solvents. It shows high selectivity for C2H2 over CO2 and can effectively separate C2H2 from a mixture.

SMALL (2023)

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Article Multidisciplinary Sciences

Benchmark single-step ethylene purification from ternary mixtures by a customized fluorinated anion-embedded MOF

Yunjia Jiang et al.

Nature Communications (2023)

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Article Nanoscience & Nanotechnology

A Robust Squarate-Cobalt Metal-Organic Framework for CO2/N2 Separation

Lei Zhang et al.

Summary: This study reports a stable squarate-cobalt metal-organic framework (MOF), FJUT-3, with an ultra-small 1D square channel decorated with -OH groups, for CO2/N2 separation. FJUT-3 shows excellent stability under harsh chemical conditions, low-cost property for scale-up synthesis, and remarkable CO2 separation performance under various humid and temperature conditions, making it suitable for industrial CO2 capture and removal.

ACS APPLIED MATERIALS & INTERFACES (2023)

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Article Chemistry, Multidisciplinary

Solvent-free Synthesis of Multi-Module Pore-Space-Partitioned Metal-Organic Frameworks for Gas Separation

Yuchen Xiao et al.

Summary: The multi-module design of framework materials has gained attention due to its potential for compositional and geometrical tuning. However, environmentally friendly and cost-effective methods for synthesizing such materials are rare. In this study, we demonstrate a solvent-free method for synthesizing multi-module MOFs with high stability and separation properties. The method involves simple mixing of reactants and short reaction time, resulting in highly porous and stable materials without the need for post-synthetic activation. The success of this solvent-free synthesis reflects the synergy between different modules, even in the presence of simpler framework compositions.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

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Article Chemistry, Multidisciplinary

Overcoming the Trade-Off between C2H2 Sorption and Separation Performance by Regulating Metal-Alkyne Chemical Interaction in Metal-Organic Frameworks

Yan-Xi Tan et al.

Summary: Designing porous materials that can purify and safely store C2H2 is crucial for industrial usage. We examined the metal-alkyne interaction of Pd-II and Pt-II on C2H2 sorption and separation in two isostructural NbO metal-organic frameworks (MOFs), Pd/Cu-PDA and Pt/Cu-PDA. The results showed that Pd-II undergoes a spontaneous chemical reaction with C2H2, leading to structural collapse and loss of C2H2/CO2 sorption and separation. Conversely, Pt-II forms a strong di-sigma bond with C2H2, resulting in high C2H2 capture. The reusable Pt/Cu-PDA efficiently separates C2H2 from C2H2/CO2 mixtures with satisfying selectivity and C2H2 capacity. This research provides valuable insights for designing high-performance MOFs for gas sorption and separation.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2023)

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Review Chemistry, Inorganic & Nuclear

Structure-directed growth and morphology of multifunctional metal-organic frameworks

Qi Huang et al.

Summary: Metal-organic frameworks (MOFs) have attracted much attention in materials science due to their tunability in structure, allowing for precise control of size and morphology. Hierarchical MOFs and their derivatives possess unique physicochemical properties, such as special morphology, controllable nanostructure, ultra-high porosity, and large specific surface area, making them widely used in the fields of environment and energy.

COORDINATION CHEMISTRY REVIEWS (2023)

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Article Chemistry, Multidisciplinary

Vertex Strategy in Layered 2D MOFs: Simultaneous Improvement of Thermodynamics and Kinetics for Record C2H2/CO2 Separation Performance

Xiaoqian Zhu et al.

Summary: Developing adsorbents with multiple merits in capacity, selectivity, mass transfer, and stability is crucial for producing high-purity C2H2 for advanced polymers and the electronic industry. We demonstrate a vertex strategy to create adsorbents with these merits through rationally designing the vertex groups of a wavy-shaped framework in 2D metal-organic frameworks.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2023)

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Article Chemistry, Multidisciplinary

Discriminatory Gate-Opening Effect in a Flexible Metal-Organic Framework for Inverse CO2/C2H2 Separation

Weize Wang et al.

Summary: A flexible metal-organic framework (Zn-DPNA) with a conformation change of the Me2NH2+ ions is reported for the selective capture of acetylene (C2H2) and carbon dioxide (CO2), showing favorable CO2/C2H2 separation.

SMALL (2023)

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Article Engineering, Environmental

Constructing C2H2 anchoring traps within MOF interpenetration nets as C2H2/CO2 and C2H2/C2H4 bifunctional separator

Chuanhai Jiang et al.

Summary: A new C2H2 adsorption trap (UPC-80) constructed by 4-fold interpenetration nets is reported, which shows high adsorption selectivities of 6.34 and 4.78 for C2H2/CO2 and C2H2/C2H4, respectively. Laboratory-scale fixed-bed breakthrough experiments confirm the efficient separation ability of UPC-80 towards the C2H2/CO2 and C2H2/C2H4 gas mixtures, with negligible capacity loss. Theoretical simulations attribute the good separation performance to the anchoring of C2H2 by two Tb2(COO)6 clusters in adjacent interpenetration nets and the strong electrostatic interaction.

CHEMICAL ENGINEERING JOURNAL (2023)

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Article Chemistry, Multidisciplinary

Interlayer Symmetry Control in Flexible-Robust Layered Metal-Organic Frameworks for Highly Efficient C2H2/CO2 Separation

Fang Zheng et al.

Summary: The tunability of the interlayer and intralayer spaces of two-dimensional layered metal-organic frameworks has been exploited to achieve high performance for C2H2/CO2 separation. The unique material, Ni(4-DPDS)(2)CrO4, demonstrates efficient C2H2/CO2 separation performance with a higher C2H2 capacity and selectivity compared to other isostructural Ni(4-DPDS)(2)MO4 (M = Mo, W).

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2023)

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Article Chemistry, Multidisciplinary

Formation and fine-tuning of metal-organic frameworks with carboxylic pincers for the recognition of a C2H2 tetramer and highly selective separation of C2H2/C2H4

Yuefeng Duan et al.

Summary: Researchers have finely tuned a new family of MOFs with carboxylic pincers to separate ethylene and acetylene efficiently, achieving high selectivity and purity of the products. This work provides a novel approach for designing high-performance MOFs by selectively binding small molecular clusters.

CHEMICAL SCIENCE (2023)

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Article Engineering, Environmental

A metal-organic framework for C2H2/CO2 separation under highly humid conditions: Balanced hydrophilicity/hydrophobicity

Xiao-Jing Xie et al.

Summary: JNU-2, a cage-interconnected microporous MOF, demonstrates high C2H2 capture capacity and selectivity, surpassing benchmark materials like UTSA-74a and FeNi-M'MOF. The surface interactions of JNU-2 enable preferential binding of C2H2 over CO2, contributing to its efficient C2H2/CO2 separation capability.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Multidisciplinary

Metal-Organic Framework Based Hydrogen-Bonding Nanotrap for Efficient Acetylene Storage and Separation

Yingxiang Ye et al.

Summary: This study introduces a novel strategy to promote the separation of C2H2/CO2 mixtures by regulating a hydrogen-bonding nanotrap on the pore surface of three isostructural metal-organic frameworks. Among them, MIL-160 demonstrates an ultrahigh C2H2 storage capacity and superior C2H2/CO2 selectivity due to its multiple hydrogen-bonding interaction with C2H2.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Chemistry, Multidisciplinary

Shape- and Size-Dependent Kinetic Ethylene Sieving from a Ternary Mixture by a Trap-and-Flow Channel Crystal

Qiubing Dong et al.

Summary: This study successfully synthesized a trap-and-flow channel crystal (NTU-67) for efficient purification of ethylene from multicomponent mixtures, demonstrating a new design philosophy for extending the application boundaries of porous coordination polymers.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Chemistry, Inorganic & Nuclear

Stable Fluorinated Hybrid Microporous Material for the EfficientSeparation of C2-C3Alkyne/Alkene Mixtures

Shuixiang Zou et al.

Summary: In this study, a fluorinated hybrid microporous material (FJI-W1) with unexpected water and thermal stability is reported. FJI-W1 exhibits ultrahigh adsorption capacities for C2H2 and C3H4, as well as remarkable separation selectivity for alkyne/alkene mixtures. Dynamic breakthrough experiments demonstrate the excellent performance of FJI-W1 in C2-C3 alkyne/alkene separation.

INORGANIC CHEMISTRY (2022)

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Article Multidisciplinary Sciences

Negative electrostatic potentials in a Hofmann-type metal-organic framework for efficient acetylene separation

Yuan Liu et al.

Summary: In this study, an electrostatic potential compatible strategy based on a nitroprusside-based metalorganic framework was demonstrated for efficient acetylene separation. By adjusting the electrostatic potential in one-dimensional channels, the framework exhibited preferential recognition of acetylene, resulting in improved selectivity and productivity.

NATURE COMMUNICATIONS (2022)

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Article Engineering, Environmental

A TIFSIX pillared MOF with unprecedented zsd topology for efficient separation of acetylene from quaternary mixtures

Nuo Xu et al.

Summary: In this study, a novel metal organic framework material called ZNU-4 with unique topology was reported for selective acetylene (C2H2) capture. The material exhibited high adsorption capacity and selectivity for C2H2, making it suitable for C2H2 separation and recovery.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Materials Science, Multidisciplinary

Machine-learning-assisted exploration of anion-pillared metal organic frameworks for gas separation

Jianbo Hu et al.

Summary: An efficient paradigm for materials design is developed by combining abandoned experimental data, computational structure descriptors, and random forest algorithm. As a case study, the adsorption properties of C2H2, C2H4, and CO2 in anion-pillared MOFs are precisely predicted, and several MOFs with top performance for CO2/C2H2 and C2H2/C2H4 separation are successfully explored and synthesized. A quantitative structure-properties relationship is also provided to offer more accurate and intuitive guidance.

MATTER (2022)

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Article Chemistry, Physical

Boosting C2H2/CO2 separation of metal-organic frameworks via anion exchange and temperature elevation

Ting Wang et al.

Summary: This study developed a post-synthetic modification approach to enhance the gas separation performance of an ultramicroporous MOF. By substituting Cl- with BF4- and increasing the test temperature, they observed improved adsorption capacity and selective adsorption of C2H2 over CO2.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Review Chemistry, Physical

Recent advances in microporous metal-organic frameworks as promising adsorbents for gas separation

Jia-Xin Wang et al.

Summary: Gas separation is a crucial process in the petrochemical industry for producing high-value chemical feedstocks. Adsorptive gas separation using solid porous adsorbents has made significant progress, with metal-organic frameworks (MOFs) showing great promise as crystalline porous materials to address various gas separation challenges.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Review Chemistry, Multidisciplinary

Fluorinated metal-organic frameworks for gas separation

Abtin Ebadi Amooghin et al.

Summary: This article focuses on the application of fluorinated metal-organic frameworks (F-MOFs) in gas separation. By precisely designing and synthesizing new F-MOFs structures, specific gas separation purposes can be achieved. The basic principles, structure-performance relationships, and applications in adsorption and membrane gas separation are discussed. The importance of F-MOFs in gas separation and future challenges are highlighted.

CHEMICAL SOCIETY REVIEWS (2022)

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Article Chemistry, Inorganic & Nuclear

A new boron cluster anion pillared metal organic framework with ligand inclusion and its selective acetylene capture properties

Wanqi Sun et al.

Summary: A novel microporous boron cluster pillared metal-organic framework BSF-10 was synthesized and showed high selectivity and capacity for the separation of acetylene from carbon dioxide and ethylene.

INORGANIC CHEMISTRY FRONTIERS (2022)

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Article Chemistry, Multidisciplinary

Amino-Functionalised Hybrid Ultramicroporous Materials that Enable Single-Step Ethylene Purification from a Ternary Mixture

Soumya Mukherjee et al.

Summary: Pyrazine-linked hybrid ultramicroporous materials show strong CO2 selectivity and outperform the first generation materials. The new aminopyrazine-linked materials exhibit reduced CO2 affinity but enhanced C2H2 affinity, enabling single-step production of polymer-grade ethylene from a ternary equimolar mixture. This performance is attributed to different binding sites in the new materials compared to the original SIFSIX-3-Zn.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

A MOF-based Ultra-Strong Acetylene Nano-trap for Highly Efficient C2H2/CO2 Separation

Zheng Niu et al.

Summary: A new type of ultra-strong C2H2 nano-trap has been proposed, which efficiently captures C2H2 molecules and separates C2H2/CO2 mixture based on multiple binding interactions. The nano-trap exhibits high C2H2 uptake, selectivity, and the locations of C2H2 molecules within it have been visualized by in situ single-crystal X-ray diffraction studies, identifying multiple binding sites responsible for the strong interactions with C2H2.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

An Unprecedented Pillar-Cage Fluorinated Hybrid Porous Framework with Highly Efficient Acetylene Storage and Separation

Hao Li et al.

Summary: The newly synthesized SIFSIX-Cu-TPA exhibits high BET surface area and C2H2 uptake, as well as excellent C2H2/CO2 separation performance.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Adsorption Site Selective Occupation Strategy within a Metal-Organic Framework for Highly Efficient Sieving Acetylene from Carbon Dioxide

Lingzhi Yang et al.

Summary: The study presents a selective adsorption strategy for separating acetylene and carbon dioxide by utilizing differences in orientation in a carefully designed amine-functionalized metal-organic framework. Incorporation of amino groups not only occupies the adsorption sites of CO2 molecules but also enhances the binding affinity with acetylene molecules. This material exhibits a high C2H2 amount at low pressure and a remarkably high C2H2/CO2 IAST selectivity at 1 bar and 298 K.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Nanospace Engineering of Metal-Organic Frameworks through Dynamic Spacer Installation of Multifunctionalities for Efficient Separation of Ethane from Ethane/Ethylene Mixtures

Cheng-Xia Chen et al.

Summary: A dynamic spacer installation (DSI) strategy was used to construct a series of multifunctional metal-organic frameworks (MOFs) for ethane/ethylene separation, with increased ethane adsorption capacity and enhanced ethane/ethylene selectivity. The DSI approach showed promising results for the rational design of multifunctional MOFs in challenging tasks.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Tetrazole-Functionalized Zirconium Metal-Organic Cages for Efficient C2H2/C2H4 and C2H2/CO2 Separations

Weidong Fan et al.

Summary: The successful isoreticular functionalization of a zirconium MOC with tetrazole moiety resulted in a promising compound for gas separation applications. Adsorption isotherms, breakthrough experiments, and density functional theory calculations demonstrated its excellent C2H2/CO2 and C2H2/C2H4 separation performance. The design analogy between MOFs and highly stable MOCs could potentially lead to the synthesis of novel porous materials for challenging separation applications.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Nanoscience & Nanotechnology

Ligand Bent-Angle Engineering for Tuning Topological Structures and Acetylene Purification Performances of Copper-Diisophthalate Frameworks

Lihui Fan et al.

Summary: This study successfully modulated the structure and function of MOFs by designing linkers with different bent angles, leading to promising solid adsorbents for acetylene purification.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Benchmark Acetylene Binding Affinity and Separation through Induced Fit in a Flexible Hybrid Ultramicroporous Material

Mohana Shivanna et al.

Summary: The new hybrid ultramicroporous material sql-SIFSIX-bpe-Zn exhibits an induced fit binding mechanism when exposed to acetylene, C2H2, resulting in strong C2H2 binding capability for highly selective C2H2/C2H4 and C2H2/CO2 separation. In-situ characterisation and DFT calculations provide insight into the mechanism of the C2H2 induced fit transformation, binding positions and interactions.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Chemistry, Multidisciplinary

Efficient C2H2/CO2 Separation in Ultramicroporous Metal-Organic Frameworks with Record C2H2 Storage Density

Wei Gong et al.

Summary: This study demonstrates efficient C2H2 adsorption and C2H2/CO2 separation by introducing preselected amino and hydroxy functionalities into metal-organic frameworks, surpassing benchmark materials and showing promising industrial potential.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Multidisciplinary

Breaking the trade-off between selectivity and adsorption capacity for gas separation

Naveen Kumar et al.

Summary: A systematic crystal engineering study has successfully tuned the pore size and chemistry of hybrid ultramicroporous materials for effective C2H2/CO2 separation, with SIFSIX-21-Ni exhibiting exceptional separation selectivity and high adsorption capacity.

CHEM (2021)

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Article Chemistry, Physical

A novel anion-pillared metal-organic framework for highly efficient separation of acetylene from ethylene and carbon dioxide†

Quan-Li Qian et al.

Summary: Researchers have developed a novel water-stable SIFSIX-type material ZJU-280 using a four-connected N-donor organic linker, which features suitable rhombic pores and functional surfaces for high C2H2 adsorption capacity and selectivities for both C2H2/CO2 (18.1) and C2H2/C2H4 (44.5) under ambient conditions. Actual breakthrough experiments demonstrate the efficient separation of C2H2 from C2H2/CO2 and C2H2/C2H4 mixtures using ZJU-280a.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Multidisciplinary