Porous metal-organic frameworks for gas storage and separation: Status and challenges

EnergyChem, Journal Year: 2019, Volume and Issue: 1(1), P. 100006 - 100006

Published: June 27, 2019

Language: Английский

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Energy-efficient separation alternatives: metal–organic frameworks and membranes for hydrocarbon separation

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(15), P. 5359 - 5406

Published: Jan. 1, 2020

The diversity of metal–organic frameworks enables the design highly efficient adsorbents and membranes towards hydrocarbon separations for energy consumption mitigation.

Language: Английский

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Synergistic sorbent separation for one-step ethylene purification from a four-component mixture

Science, Journal Year: 2019, Volume and Issue: 366(6462), P. 241 - 246

Published: Oct. 11, 2019

Selecting for ethylene Purification of from other gases produced during its synthesis, such as acetylene, ethane, and carbon dioxide, is an energy-intensive process. Chen et al. use a mixture microporous metal-organic framework physisorbents that are selective one these four gases. A series sorbents in packed-bed geometry pure enough making polymers. Science , this issue p. 241

Language: Английский

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Two-dimensional materials in semiconductor photoelectrocatalytic systems for water splitting

Energy & Environmental Science, Journal Year: 2018, Volume and Issue: 12(1), P. 59 - 95

Published: Oct. 10, 2018

Hydrogen production via solar water splitting can be enhanced by combining semiconductors with various 2-dimensional materials.

Language: Английский

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Ethylene/ethane separation in a stable hydrogen-bonded organic framework through a gating mechanism

Nature Chemistry, Journal Year: 2021, Volume and Issue: 13(10), P. 933 - 939

Published: July 8, 2021

Language: Английский

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A Chemically Stable Hofmann‐Type Metal−Organic Framework with Sandwich‐Like Binding Sites for Benchmark Acetylene Capture

Advanced Materials, Journal Year: 2020, Volume and Issue: 32(24)

Published: May 11, 2020

The realization of porous materials for highly selective separation acetylene (C2 H2 ) from various other gases (e.g., carbon dioxide and ethylene) by adsorption is prime importance but challenging in the petrochemical industry. Herein, a chemically stable Hofmann-type metal-organic framework (MOF), Co(pyz)[Ni(CN)4 ] (termed as ZJU-74a), that features sandwich-like binding sites benchmark C2 capture reported. Gas sorption isotherms reveal ZJU-74a exhibits far record capacity (49 cm3 g-1 at 0.01 bar 296 K) thus ultrahigh selectivity /CO2 (36.5), /C2 H4 (24.2), /CH4 (1312.9) ambient conditions, respectively, which highest among all robust MOFs reported so far. Theoretical calculations indicate oppositely adjacent nickel(II) centers together with cyanide groups different layers can construct sandwich-type site to offer dually strong cooperative interactions molecule, leading its selectivities. exceptional performance confirmed both simulated experimental breakthrough curves 50/50 (v/v) , 1/99 mixtures under conditions.

Language: Английский

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Enabling PIEZOpotential in PIEZOelectric Semiconductors for Enhanced Catalytic Activities

Angewandte Chemie International Edition, Journal Year: 2018, Volume and Issue: 58(23), P. 7526 - 7536

Published: Dec. 17, 2018

The past several decades have witnessed significant advances in the synthesis and applications of PIEZOelectric semiconductors, an important class materials, including piezoelectric, pyroelectric, ferroelectric semiconductors. intriguing combination physical chemical phenomena semiconductors has triggered much interest PIEZOcatalysis, that is, catalysis enabled by PIEZOpotential (i.e., piezopotential, pyropotential, ferropotential)-induced built-in electric fields, which is focus this Minireview. First, materials are briefly introduced. Second, recent developments PIEZOcatalysis highlighted, introduction representative their possible catalytic mechanisms, novel techniques to produce effects during process, examples PIEZOcatalysis. Finally, challenges field exciting opportunities further improve PIEZOcatalytic efficiency discussed.

Language: Английский

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Cage-Interconnected Metal–Organic Framework with Tailored Apertures for Efficient C₂H₆/C₂H₄ Separation under Humid Conditions

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 141(51), P. 20390 - 20396

Published: Nov. 29, 2019

Metal-organic frameworks (MOFs) with open metal sites (OMSs) have been shown to preferentially adsorb unsaturated hydrocarbons such as C2H4 due the formation of π-complexation. However, adsorption capacity and selectivity might well be dampened under humid conditions because OMSs could easily poisoned in presence water vapor. C2H6-selective adsorbents less hydrophilic environments, on other hand, not only effectively minimize impact humidity separation but also directly produce high-purity from C2H6/C2H4 mixtures. Here, we report a MOF (JNU-2) underlying rare xae topology. Its cage-like cavities are interconnected through apertures limiting diameter ca. 3.7 Å, which is domain kinetic diameters C2H6 molecules. Molecular modeling studies suggest four oxygen atoms aperture poised interact multiple C-H···O hydrogen bonding, rendering JNU-2 an enhanced selectivity. Indeed, experimental results reveal that takes up great amount comparable top-performing MOFs displays excellent even conditions; moreover, it can regenerated at room temperature owing its moderate enthalpy. This work successfully demonstrated strategy balancing for by designing materials tailored apertures. The function screening selectivity, while internal provide space large adsorption.

Language: Английский

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A robust Th-azole framework for highly efficient purification of C2H4 from a C2H4/C2H2/C2H6 mixture

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: June 22, 2020

Abstract Separation of C 2 H 4 from /C 6 mixture with high working capacity is still a challenging task. Herein, we deliberately design Th-metal-organic framework (MOF) for highly efficient separation binary and ternary mixture. The synthesized MOF Azole-Th-1 shows UiO-66-type structure fcu topology built on Th secondary building unit tetrazole-based linker. Such noticeable structure, connected by N,O-donor ligand chemical stability. At 100 kPa 298 K performs excellent (purity > 99.9%) not only (1:9, v/v) but also (9:1:90, v/v/v), the corresponding can reach up to 1.13 1.34 mmol g −1 , respectively. mechanism, as unveiled density functional theory calculation, due stronger van der Waals interaction between ethane skeleton.

Language: Английский

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An Ultramicroporous Metal–Organic Framework for High Sieving Separation of Propylene from Propane

Journal of the American Chemical Society, Journal Year: 2020, Volume and Issue: 142(41), P. 17795 - 17801

Published: Sept. 29, 2020

Highly selective adsorptive separation of olefin/paraffin through porous materials can produce high purity olefins in a much more energy-efficient way than the traditional cryogenic distillation. Here we report an ultramicroporous cobalt gallate metal-organic framework (Co-gallate) for highly sieving propylene/propane at ambient conditions. This material possesses optimal pore structure exact confinement propylene molecules while excluding slightly large propane molecules, as clearly demonstrated neutron diffraction crystal Co-gallate⊃0.38C

Language: Английский

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