Orthogonal-array dynamic molecular sieving of propylene/propane mixtures

Nature, Journal Year: 2021, Volume and Issue: 595(7868), P. 542 - 548

Published: July 21, 2021

Language: Английский

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Metal–Organic Framework Based Hydrogen-Bonding Nanotrap for Efficient Acetylene Storage and Separation

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 144(4), P. 1681 - 1689

Published: Dec. 29, 2021

The removal of carbon dioxide (CO2) from acetylene (C2H2) is a critical industrial process for manufacturing high-purity C2H2. However, it remains challenging to address the tradeoff between adsorption capacity and selectivity, on account their similar physical properties molecular sizes. To overcome this difficulty, here we report novel strategy involving regulation hydrogen-bonding nanotrap pore surface promote separation C2H2/CO2 mixtures in three isostructural metal-organic frameworks (MOFs, named MIL-160, CAU-10H, CAU-23, respectively). Among them, which has abundant acceptors as nanotraps, can selectively capture molecules demonstrates an ultrahigh C2H2 storage (191 cm3 g-1, or 213 cm-3) but much less CO2 uptake (90 g-1) under ambient conditions. amount MIL-160 remarkably higher than those other two MOFs (86 119 g-1 CAU-10H respectively) same More importantly, both simulation experimental breakthrough results show that sets new benchmark equimolar terms potential (Δqbreak = 5.02 mol/kg) productivity (6.8 mol/kg). In addition, situ FT-IR experiments computational modeling further reveal unique host-guest multiple interaction key factor achieving extraordinary superior selectivity. This work provides powerful approach extremely gas separation.

Language: Английский

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Achieving High Performance Metal–Organic Framework Materials through Pore Engineering

Accounts of Chemical Research, Journal Year: 2021, Volume and Issue: 54(17), P. 3362 - 3376

Published: Aug. 17, 2021

Achieving high performance functional materials has been a long-term goal for scientists and engineers that can significantly promote science technology development thus benefit our society human beings. As well-known porous materials, metal-organic frameworks (MOFs) are crystalline open made up of molecular building blocks linked by strong coordination bonds, affording pore space storing trapping guest molecules. In terms porosity, MOFs outperform traditional including zeolites activated carbon, showing exceptional porosity with internal surface area to thousands square meters per gram sample periodic sizes ranging from sub-nanometer nanometers. Numerous have synthesized potential applications gaseous fuels separating intractable industrial gas mixtures, sensing physical chemical stimulus, transmitting protons conduction. Compared distinguished their capability adjustment interior modification through engineering, which them preeminent platform exploring performance.Rational combinations rigid units different geometry multibranched organic linkers provided diverse structures, spherical cylindrical, slit, tubular ones isolating or interconnecting in directions, be optimized high-capacity storage. Based on the isoreticular principle approach MOF chemistry, performed exquisite precision, making suitable address industrially important separation. The large cavities readily available encapsulation species, resulting novel composite various functions.In this Account, we summarize recent research progress engineering achieve high-performance materials. We able tune optimize immobilize specific sites, incorporate species into target hydrogen storage, methane light-hydrocarbon purification, proton conduction, especially separations acetylene removal ethylene propylene purification. By chemistry endows multiple functionalities, endeavors brought about customization corresponding application scenarios.

Language: Английский

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Progress and potential of metal-organic frameworks (MOFs) for gas storage and separation: A review

Journal of environmental chemical engineering, Journal Year: 2022, Volume and Issue: 10(5), P. 108300 - 108300

Published: July 20, 2022

Language: Английский

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A Microporous Hydrogen‐Bonded Organic Framework for the Efficient Capture and Purification of Propylene

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(37), P. 20400 - 20406

Published: July 5, 2021

Abstract Adsorptive separation of propylene/propane (C 3 H 6 /C 8 ) mixture is desired for its potential energy saving on replacing currently deployed and energy‐intensive cryogenic distillation. Realizing efficient C in the emerging hydrogen‐bonded organic frameworks (HOFs) very challenging owing to lack functional sites preferential gas binding. By virtue crystal engineering, we herein report a functionalized HOF ( HOF‐16 with free ‐COOH mixtures. Under ambient conditions, shows significant uptake difference (by 76 %) selectivity (5.4) contrast other carboxylic acid‐based HOFs. Modeling studies indicate that groups together suitable pore confinement facilitate recognition high‐density packing molecules. The performance was validated by breakthrough experiments. stable towards strong acidity water.

Language: Английский

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Glassy Metal–Organic‐Framework‐Based Quasi‐Solid‐State Electrolyte for High‐Performance Lithium‐Metal Batteries

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(43)

Published: Aug. 3, 2021

Abstract Enhancing ionic conductivity of quasi‐solid‐state electrolytes (QSSEs) is one the top priorities, while conventional metal–organic frameworks (MOFs) severely impede ion migration due to their abundant grain boundaries. Herein, ZIF‐4 glass, a subset MOFs, reported as QSSEs (LGZ) for lithium‐metal batteries. With lean Li content (0.12 wt%) and solvent amount (19.4 wt%), LGZ can achieve remarkable 1.61 × 10 −4 S cm −1 at 30 °C, higher than those crystalline ZIF‐4‐based (LCZ, 8.21 −5 ) containing high contents (0.32–5.4 huge plasticizer (30–70 wt%). Even −56.6 still deliver 5.96 −6 (vs 4.51 −7 LCZ). Owing boundary‐free isotropic properties glassy ZIF‐4, facilitated conduction enables homogeneous flux, suppressing dendrites. When paired with LiFePO 4 cathode, cell demonstrates prominent cycling capacity 101 mAh g 500 cycles 1 C near‐utility retention, outperforming LCZ (30.7 explored MOF‐/covalent–organic (COF)‐based QSSEs. Hence, MOF glasses will be potential platform practical batteries in future.

Language: Английский

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Metal-organic frameworks derived transition metal phosphides for electrocatalytic water splitting

Journal of Energy Chemistry, Journal Year: 2021, Volume and Issue: 68, P. 494 - 520

Published: Dec. 10, 2021

Language: Английский

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A molecular sieve with ultrafast adsorption kinetics for propylene separation

Science, Journal Year: 2023, Volume and Issue: 383(6679), P. 179 - 183

Published: Dec. 14, 2023

The design of molecular sieves is vital for gas separation, but it suffers from a long-standing issue slow adsorption kinetics due to the intrinsic contradiction between sieving and diffusion within restricted nanopores. We report sieve ZU-609 with local channels that feature gates rapid channels. precise cross-sectional cutoff enables exclusion propane propylene. coexisting large constituted by sulfonic anions helically arranged metal-organic architectures allow fast propylene, measured propylene coefficient in one two orders magnitude higher than previous sieves. Propylene 99.9% purity obtained through breakthrough experiments productivity 32.2 L kg

Language: Английский

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Pore Distortion in a Metal–Organic Framework for Regulated Separation of Propane and Propylene

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 143(46), P. 19300 - 19305

Published: Nov. 15, 2021

The development of porous solids for adsorptive separation propylene and propane remains an important challenging line research. State-of-the-art sorbent materials often suffer from the trade-off between adsorption capacity selectivity. Here, we report regulated in a metal-organic framework via designed pore distortion. distorted structure HIAM-301 successfully excludes thus achieved simultaneously high selectivity (>150) large (∼3.2 mmol/g) at 298 K 1 bar. Dynamic breakthrough measurements validated excellent propylene. In situ neutron powder diffraction inelastic scattering revealed binding domains adsorbed molecules as well host-guest interaction dynamics. This study presents new benchmark propane.

Language: Английский

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Ultramicroporous Hydrogen-Bonded Organic Framework Material with a Thermoregulatory Gating Effect for Record Propylene Separation

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(37), P. 17033 - 17040

Published: Sept. 7, 2022

Propane/propylene separation is one of the most challenging and energy-consuming but important tasks in petrochemical industry. Herein, a stable hydrogen-bonded organic framework (HOF-FJU-1) was tailor-made for highly efficient propylene from binary C3H6/C3H8 even seven component CH4/C2H4/C2H6/C3H6/C3H8/CO2/H2 mixtures. The temperature-controllable diffusion channels HOF-FJU-1 have enabled porous material to completely exclude propane reach high-performance purification under energy-efficient operation conditions. Single-crystal structural analysis revealed that well-matched pore aperture can exactly accommodate molecules via multiple intermolecular interactions, exhibiting very high propylene/propane selectivity 616 at 333 K. purity productivity are over 99.5% 30.2 L kg–1 (50/50) mixture Through follow-up column C3H6/C2H4 353 K, not only high-purity (99.5%) also ethylene (98.3%) be readily collected (31/10/25/10/10/1/13) cracking gas great potential industrial process has been further supported by stability this different environments straightforward processibility regeneration feasibility.

Language: Английский

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