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
Roll-to-Roll Production of Metal-Organic Framework Coatings for Particulate Matter Removal
Yifa Chen,Shenghan Zhang,Sijia Cao,Siqing Li,Fan Chen,Shuai Yuan,Cheng Xu,Junwen Zhou,Xiao Feng,Xiaojie Ma,Bo Wang +10 more
TL;DR: A powerful roll-to-roll hot-pressing strategy for mass production of metal-organic framework (MOF)-based filters (MOFilters) using various MOF systems with ranges of substrates is presented, which shows superior particulate matter removal efficiency under desired working temperatures.
Journal ArticleDOI
High hopes: can molecular electronics realise its potential?
Ali Coskun,Ali Coskun,Jason M. Spruell,Jason M. Spruell,Gokhan Barin,William R. Dichtel,Amar H. Flood,Youssry Y. Botros,Youssry Y. Botros,Youssry Y. Botros,J. Fraser Stoddart,J. Fraser Stoddart +11 more
TL;DR: This critical review focuses attention on the collective behaviour of switchable mechanically interlocked molecules (MIMs)--specifically, bistable rotaxanes and catenanes--which exhibit reset lifetimes between their ON and OFF states ranging from seconds in solution to hours in crossbar devices.
Journal ArticleDOI
Synthesis, Properties, and Gas Separation Studies of a Robust Diimide-Based Microporous Organic Polymer
Omar K. Farha,Alexander M. Spokoyny,Brad G. Hauser,Youn Sang Bae,Samantha E. Brown,Randall Q. Snurr,Chad A. Mirkin,Joseph T. Hupp +7 more
TL;DR: In this paper, the synthesis of a new porous organic polymer based on condensation of inexpensive anhydride-and amine-bearing building blocks was reported. But this material is not suitable for use in the field of bioengineering.
Journal ArticleDOI
Design and control of gas diffusion process in a nanoporous soft crystal.
Cheng Gu,Nobuhiko Hosono,Jia-Jia Zheng,Yohei Sato,Shinpei Kusaka,Shigeyoshi Sakaki,Susumu Kitagawa +6 more
TL;DR: The rational design of a diffusion-regulatory system in a porous coordination polymer (PCP) in which flip-flop molecular motions within the framework structure provide kinetic gate functions that enable efficient gas separation and storage is presented.
Journal ArticleDOI
Synergistic sorbent separation for one-step ethylene purification from a four-component mixture.
Kai-Jie Chen,David G. Madden,Soumya Mukherjee,Tony Pham,Katherine A. Forrest,Amrit Kumar,Brian Space,Jie Kong,Qiuyu Zhang,Michael J. Zaworotko +9 more
TL;DR: A synergistic sorbent separation method for the one-step production of polymer-grade C2H4 from ternary or quaternary gas mixtures with a series of physisorbents in a packed-bed geometry is introduced.
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.
Journal ArticleDOI
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.