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
Citations
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Journal ArticleDOI
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.
Journal ArticleDOI
Metal–Organic Frameworks for Separations
Journal ArticleDOI
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
Journal ArticleDOI
Luminescent Functional Metal–Organic Frameworks
Journal ArticleDOI
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
Temperature-triggered gate opening for gas adsorption in microporous manganese formate
Hyunuk Kim,Denis G. Samsonenko,Minyoung Yoon,Ji Woong Yoon,Young Kyu Hwang,Jong-San Chang,Kimoon Kim +6 more
TL;DR: Microporous manganese formate shows temperature-triggered gate opening for nitrogen and argon adsorption, which is not due to a structural change of the framework but due to dynamic opening of the pore aperture and sufficient kinetic energy of the adsorbates to overcome a diffusion barrier above a critical temperature.
Journal ArticleDOI
Molecular Fuel Tanks
TL;DR: In this paper, the authors highlight the report by Rosi et al. whose porous metal-organic framework materials show promise for hydrogen storage, but do not yet show sufficiently high storage capacities for practical applications, but can be modified to increase uptake.
Journal ArticleDOI
In-Depth Study of the Influence of Host-Framework Flexibility on the Diffusion of Small Gas Molecules in One-Dimensional Zeolitic Pore Systems
TL;DR: In this paper, the role of host-framework flexibility on the diffusion of methane molecules in the one-dimensional pores of AFI-, LTL-, and MTW-type zeolites is investigated.
Journal ArticleDOI
Phase transition of zeolite RHO at high-pressure.
Yongjae Lee,Joseph A. Hriljac,Thomas Vogt,John B. Parise,Michael J. Edmondson,Paul A. Anderson,David R. Corbin,Takaya Nagai +7 more
TL;DR: This work found for the first time the existence of a rhombohedral zeolite rho in one of the authors' Li-exchanged forms at ambient conditions and indicated that the high-pressure forms are consistently less compressible than the low-pressure counterparts.