Journal ArticleDOI
Selective gas adsorption and separation in metal–organic frameworks
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
Water-Stable Anionic Metal-Organic Framework for Highly Selective Separation of Methane from Natural Gas and Pyrolysis Gas.
Lan Li,Lan Li,Xusheng Wang,Jun Liang,Yuan-Biao Huang,Hongfang Li,Zu-Jin Lin,Rong Cao,Rong Cao +8 more
TL;DR: FJI-C4 with narrow one-dimensional pore channels exhibits high selectivity of C3H8/ CH4 and C2H2/CH4 and is the first time for the MOF which contains phosphorus for selective separation of methane from natural gas and pyrolysis gas.
Journal ArticleDOI
Recent developments in first-principles force fields for molecules in nanoporous materials
TL;DR: In this article, a review of recent developments in deriving first-principles force fields for molecules in a variety of nanoporous materials is presented. And the authors summarize and classify the methodologies used in these studies, and discuss the factors that are responsible for the accuracy and reliability of FFs.
Journal ArticleDOI
Recent advances and progress in the development of graphene-based adsorbents for CO2 capture
TL;DR: In this paper, the authors present a review of the latest developments in the rapidly evolving cross-disciplinary field of graphene-mediated CO2 adsorption and it provides new research directions for making further advances toward practical deployment of GAs.
Journal ArticleDOI
Synthesis of structured porous polymers with acid and basic sites and their catalytic application in cascade-type reactions
TL;DR: In this paper, the use of one porous polymeric aromatic framework (PPAF) with a 9,9′-spiro-bisfluorene unit as a support in heterogeneous catalysis was described.
Journal ArticleDOI
Two Solvent-Dependent Zinc(II) Supramolecular Isomers: Rare kgd and Lonsdaleite Network Topologies Based on a Tripodal Flexible Ligand
TL;DR: Two Zn(II) supramolecular isomeric metal-organic frameworks (MOFs) based on well-designed tripodal tris(2-carboxyethyl)isocyanuric acid (H3tci), formulated as [(Me2NH2]Zn(tci)·0.5DMF]n (1) and [(Me 2NH2)Zn[tci]·2DMF], respectively, have been solvothermally synthesized and characterized.
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.
Journal ArticleDOI
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.