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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Journal ArticleDOI
Achieving High Performance Metal-Organic Framework Materials through Pore Engineering.
TL;DR: In terms of porosity, metal-organic frameworks (MOFs) outperform traditional porous materials including zeolites and activated carbon, showing exceptional porosity with internal surface area up to thousands of square meters per gram of sample and with periodic pore sizes ranging from sub-nanometer to nanometers as discussed by the authors.
Journal ArticleDOI
Tailor-Made Pyrazolide-Based Metal-Organic Frameworks for Selective Catalysis.
Ning Huang,Kecheng Wang,Hannah F. Drake,Peiyu Cai,Jiandong Pang,Jialuo Li,Sai Che,Lan Huang,Qi Wang,Hong-Cai Zhou +9 more
TL;DR: PCN-624 can be employed as an efficient heterogeneous catalyst for the selective synthesis of fullerene-anthracene bisadduct and demonstrate that MOFs can serve as a powerful platform with great flexibility for functional design to solve various synthetic problems.
Journal ArticleDOI
Microwave-induced fast incorporation of titanium into UiO-66 metal-organic frameworks for enhanced photocatalytic properties.
TL;DR: A microwave-assisted method was developed to substitute the zirconium with titanium in UiO-66 within a few hours compared to several days reported previously, with the crystallinity well maintained and photocatalytic activities tremendously improved.
Journal ArticleDOI
Competitive coordination strategy for the synthesis of hierarchical-pore metal–organic framework nanostructures
TL;DR: It is demonstrated that a competitive coordination strategy for the synthesis of H-MOF nanostructures, such as two-dimensional H- MOF nanosheets and H-MoF nanocubes, evolving through an etching process tuned by a competitive ligand.
Journal ArticleDOI
Epitaxially grown metal-organic frameworks
Hartmut Gliemann,Christof Wöll +1 more
TL;DR: In this article, the authors focus on a particularly attractive route for surface functionalization via the coating of substrates with ordered, highly-porous, self-assembling layers of metal-organic frameworks.
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.