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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Metal–Organic Framework Materials as Chemical Sensors
Lauren E. Kreno,Kirsty Leong,Omar K. Farha,Mark D. Allendorf,Richard P. Van Duyne,Joseph T. Hupp +5 more
TL;DR: The potential to computationally predict, with good accuracy, affinities of guests for host frameworks points to the prospect of routinely predesigning frameworks to deliver desired properties.
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Metal–Organic Frameworks for Separations
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Carbon Dioxide Capture in Metal–Organic Frameworks
Kenji Sumida,David L. Rogow,Jarad A. Mason,Thomas M. McDonald,Eric D. Bloch,Zoey R. Herm,Tae-Hyun Bae,Jeffrey R. Long +7 more
TL;DR: Kenji Sumida, David L. Rogow, Jarad A. Mason, Thomas M. McDonald, Eric D. Bloch, Zoey R. Herm, Tae-Hyun Bae, Jeffrey R. Long
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Luminescent Functional Metal–Organic Frameworks
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Carbon Dioxide Capture: Prospects for New Materials
TL;DR: The most recent developments and emerging concepts in CO(2) separations by solvent absorption, chemical and physical adsorption, and membranes, amongst others, will be discussed, with particular attention on progress in the burgeoning field of metal-organic frameworks.
References
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Journal ArticleDOI
Guest-induced modification of a magnetically active ultramicroporous, gismondine-like, copper(II) coordination network.
Jorge A. R. Navarro,Elisa Barea,Antonio Rodríguez-Diéguez,Juan M. Salas,Conchi O. Ania,José B. Parra,Norberto Masciocchi,Simona Galli,Angelo Sironi +8 more
TL;DR: The results show that while dehydration of 1 has negligible effect on its spin-canted antiferromagnetic behavior, CO2 incorporation in the pores is responsible for an increment of the transition temperature at which the weak ferromagnetic ordering takes place from 22 to 29 K.
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Adsorption and separation of binary mixtures in a metal-organic framework Cu-BTC: A computational study
TL;DR: In this article, the results showed that the topology structure of the side pockets in Cu-BTC caused the selective adsorption behaviors between gas components, and its effects were more evident at low adsoreption loadings.
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Porous metal-organic framework with coordinatively unsaturated Mn(II) sites:sorption properties for various gases.
TL;DR: Desolvated solid [Mn(NDC)]n (2), which contains coordinatively unsaturated Mn(II) sites, reveals remarkable sorption capabilities for N2, H2, CO2, and CH4 gases and exhibits type I sorption behavior indicative of permanent microporosity.
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Ultramicroporous metal-organic framework based on 9,10-anthracenedicarboxylate for selective gas adsorption.
TL;DR: An ultramicroporous metal-organic framework based on 9,10-anthracenedicarboxylate (PCN-13) has been synthesized and structurally characterized and demonstrates selective adsorption of oxygen and hydrogen over nitrogen and carbon monoxide.
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Kinetic isotope effect for H-2 and D-2 quantum molecular sieving in adsorption/desorption on porous carbon materials
TL;DR: This represents the first experimental observation of kinetic isotope quantum molecular sieving in porous materials due to the larger zero-point energy for the lighter H(2), resulting in slower adsorption/desorption kinetics compared with the heavier D(2).