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
Citations
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Journal ArticleDOI
Synthesis and Stability of Tagged UiO-66 Zr-MOFs
Mathivathani Kandiah,Merete Hellner Nilsen,Sandro Usseglio,Søren Jakobsen,Unni Olsbye,Mats Tilset,Cherif Larabi,Elsje Alessandra Quadrelli,Francesca Bonino,Karl Petter Lillerud +9 more
TL;DR: In this article, a family of isoreticular MOFs, based on the UiO-66 structure, was obtained from the three different linker ligands H2N−H2BDC, O2N −H2BDDC, and Br−H 2BDC and the physicochemical and chemical investigation of these materials demonstrate that this class of MOFs retains high thermal and chemical stabilities, even with functional groups present at the linker units.
Journal ArticleDOI
Metal-organic framework materials with ultrahigh surface areas: is the sky the limit?
Omar K. Farha,Ibrahim Eryazici,Nak Cheon Jeong,Nak Cheon Jeong,Brad G. Hauser,Christopher E. Wilmer,Amy A. Sarjeant,Randall Q. Snurr,SonBinh T. Nguyen,A. Ozgur Yazaydin,Joseph T. Hupp +10 more
TL;DR: It is demonstrated computationally that by shifting from phenyl groups to "space efficient" acetylene moieties as linker expansion units, the hypothetical maximum surface area for a MOF material is substantially greater than previously envisioned.
Journal ArticleDOI
Potential applications of metal-organic frameworks
Ryan J. Kuppler,Daren J. Timmons,Qianrong Fang,Jian-Rong Li,Trevor A. Makal,Mark D. Young,Daqiang Yuan,Dan Zhao,Wenjuan Zhuang,Hong-Cai Zhou +9 more
TL;DR: In this article, the potential applications of metal-organic frameworks are examined and an outlook is proposed for these potential applications, including materials for gas storage, gas/vapor separation, catalysis, luminescence, and drug delivery.
Journal ArticleDOI
Carbon capture and conversion using metal–organic frameworks and MOF-based materials
TL;DR: This review provides a comprehensive account of significant progress in the design and synthesis of MOF-based materials, including MOFs, MOF composites and MOF derivatives, and their application to carbon capture and conversion.
Journal ArticleDOI
An amine-functionalized titanium metal-organic framework photocatalyst with visible-light-induced activity for CO2 reduction.
TL;DR: Let your light shine: the photocatalytic reduction of carbon dioxide to the formate anion under visible light irradiation is for the first time realized over a photoactive Ti-containing metal-organic framework, NH(2)-MIL-125(Ti), which is fabricated by a facile substitution of ligands in the UV-responsive MIL- 125(Ti) material.
References
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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.