Journal ArticleDOI
Selective gas adsorption and separation in metal–organic frameworks
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TLDR
This critical review starts with a brief introduction to gas separation and purification based on selective adsorption, followed by a review of gas selective adsorbents in rigid and flexible MOFs, and primary relationships between adsorptive properties and framework features are analyzed.Abstract:
Adsorptive separation is very important in industry. Generally, the process uses porous solid materials such as zeolites, activated carbons, or silica gels as adsorbents. With an ever increasing need for a more efficient, energy-saving, and environmentally benign procedure for gas separation, adsorbents with tailored structures and tunable surface properties must be found. Metal–organic frameworks (MOFs), constructed by metal-containing nodes connected by organic bridges, are such a new type of porous materials. They are promising candidates as adsorbents for gas separations due to their large surface areas, adjustable pore sizes and controllable properties, as well as acceptable thermal stability. This critical review starts with a brief introduction to gas separation and purification based on selective adsorption, followed by a review of gas selective adsorption in rigid and flexible MOFs. Based on possible mechanisms, selective adsorptions observed in MOFs are classified, and primary relationships between adsorption properties and framework features are analyzed. As a specific example of tailor-made MOFs, mesh-adjustable molecular sieves are emphasized and the underlying working mechanism elucidated. In addition to the experimental aspect, theoretical investigations from adsorption equilibrium to diffusion dynamics via molecular simulations are also briefly reviewed. Furthermore, gas separations in MOFs, including the molecular sieving effect, kinetic separation, the quantum sieving effect for H2/D2 separation, and MOF-based membranes are also summarized (227 references).read more
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Journal ArticleDOI
Discovery, development, and functionalization of Zr(IV)-based metal–organic frameworks
Min Kim,Seth M. Cohen +1 more
TL;DR: In this article, the discovery and functionalization of Zr(IV)-based metal-organic frameworks (MOFs) are discussed along with their unique properties and potential technological utility.
Journal ArticleDOI
Challenges and recent advances in MOF–polymer composite membranes for gas separation
TL;DR: In this article, a review of metal-organic framework (MOF)-polymer composite membranes including MOF-based mixed-matrix membranes (MMMs) and polymer supported MOF membranes is presented.
Journal ArticleDOI
Polystyrene Sulfonate Threaded through a Metal–Organic Framework Membrane for Fast and Selective Lithium-Ion Separation
TL;DR: A new approach to construct polystyrene sulfonate (PSS) threaded HKUST-1 metal-organic framework (MOF) membranes through an in situ confinement conversion process, which exhibits ideal selectivities of 78, 99, and 10296, the highest ever reported among ionic conductors and Li+ extraction membranes.
Journal ArticleDOI
An Ideal Molecular Sieve for Acetylene Removal from Ethylene with Record Selectivity and Productivity.
Bin Li,Xili Cui,Daniel O'Nolan,Hui Min Wen,Mengdie Jiang,Rajamani Krishna,Hui Wu,Rui-Biao Lin,Yu-Sheng Chen,Daqiang Yuan,Huabin Xing,Wei Zhou,Qilong Ren,Guodong Qian,Michael J. Zaworotko,Banglin Chen,Banglin Chen +16 more
TL;DR: An ideal porous material, SIFSIX-14-Cu-i (also termed as UTSA-200), is reported with ultrafine tuning of pore size to effectively block ethylene molecules but to take up a record-high amount of acetylene, which sets up new benchmarks for both the adsorption capacity and selectivity.
Journal ArticleDOI
CO2 Dynamics in a Metal–Organic Framework with Open Metal Sites
Xueqian Kong,Xueqian Kong,Eric Scott,Eric Scott,Wen Ding,Wen Ding,Jarad A. Mason,Jarad A. Mason,Jeffrey R. Long,Jeffrey R. Long,Jeffrey A. Reimer,Jeffrey A. Reimer +11 more
TL;DR: In situ(13)C NMR spectroscopy is applied to investigate CO(2) adsorbed in Mg(2)(dobDC) (H(4)dobdc = 2,5-dihydroxyterephthalic acid; Mg-MOF-74, CPO-27-Mg), a key MOF in which exposed Mg (2+) cation sites give rise to exceptional CO( 2) capture properties.
References
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Journal ArticleDOI
Functional porous coordination polymers.
TL;DR: The aim is to present the state of the art chemistry and physics of and in the micropores of porous coordination polymers, and the next generation of porous functions based on dynamic crystal transformations caused by guest molecules or physical stimuli.
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Reticular synthesis and the design of new materials
Omar M. Yaghi,Michael O'Keeffe,Nathan W. Ockwig,Hee K. Chae,Hee K. Chae,Mohamed Eddaoudi,Jaheon Kim +6 more
TL;DR: This work has shown that highly porous frameworks held together by strong metal–oxygen–carbon bonds and with exceptionally large surface area and capacity for gas storage have been prepared and their pore metrics systematically varied and functionalized.
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Design and synthesis of an exceptionally stable and highly porous metal-organic framework
TL;DR: In this article, an organic dicarboxylate linker is used in a reaction that gives supertetrahedron clusters when capped with monocarboxyates.
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From molecules to crystal engineering: supramolecular isomerism and polymorphism in network solids.
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Hybrid porous solids: past, present, future
TL;DR: The state-of-the-art on hybrid porous solids, their advantages, their new routes of synthesis, the structural concepts useful for their 'design', aiming at reaching very large pores are presented.