Switchable molecular sieving of a capped metal organic framework membrane

2020 ◽  
Vol 8 (38) ◽  
pp. 19984-19990
Author(s):  
Shuai Zhang ◽  
Bo Gui ◽  
Teng Ben ◽  
Shilun Qiu
Keyword(s):  
Metal Organic Framework ◽  
Membrane Surface ◽  
Light Treatment ◽  
Side Group ◽  
Metal Organic ◽  
Adsorption Desorption ◽  
Molecular Sieving ◽  
Organic Framework

A functional MOF with an azobenzene side group, UiO-68-azo, was fabricated into a continuous membrane. The enhanced permselectivity was controllable through UV/vis light treatment of the adsorption/desorption of β-CD on the membrane surface.

Metal-organic framework nanosheets as building blocks for molecular sieving membranes

Science ◽  
2014 ◽  
Vol 346 (6215) ◽  
pp. 1356-1359 ◽  
Author(s):  
Y. Peng ◽  
Y. Li ◽  
Y. Ban ◽  
H. Jin ◽  
W. Jiao ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Building Blocks ◽  
Metal Organic ◽  
Molecular Sieving ◽  
Organic Framework

Photo-switchable smart metal–organic framework membranes with tunable and enhanced molecular sieving performance

2018 ◽  
Vol 6 (48) ◽  
pp. 24949-24955 ◽  
Author(s):  
Chuanyao Liu ◽  
Yunzhe Jiang ◽  
Chen Zhou ◽  
Jürgen Caro ◽  
Aisheng Huang
Keyword(s):  
Separation Factor ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Molecular Sieving ◽  
Organic Framework

A novel photo-switchable Cu(AzDC)(4,4′-BPE)0.5 membrane was developed with the H2/CO2 separation factor being switched reversibly between 21.3 and 43.7 after irradiation with Vis light (455 nm) and UV (365 nm).

Interfacial microfluidic processing of metal-organic framework hollow fiber membranes

Science ◽  
2014 ◽  
Vol 345 (6192) ◽  
pp. 72-75 ◽  
Author(s):  
Andrew J. Brown ◽  
Nicholas A. Brunelli ◽  
Kiwon Eum ◽  
Fereshteh Rashidi ◽  
J. R. Johnson ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Hollow Fibers ◽  
Membrane Fabrication ◽  
Separation Factors ◽  
Metal Organic ◽  
Membrane Defects ◽  
Molecular Sieving ◽  
Positional Control ◽  
Organic Framework

Molecular sieving metal-organic framework (MOF) membranes have great potential for energy-efficient chemical separations, but a major hurdle is the lack of a scalable and inexpensive membrane fabrication mechanism. We describe a route for processing MOF membranes in polymeric hollow fibers, combining a two-solvent interfacial approach for positional control over membrane formation (at inner and outer surfaces, or in the bulk, of the fibers), a microfluidic approach to replenishment or recycling of reactants, and an in situ module for membrane fabrication and permeation. We fabricated continuous molecular sieving ZIF-8 membranes in single and multiple poly(amide-imide) hollow fibers, with H2/C3H8 and C3H6/C3H8 separation factors as high as 370 and 12, respectively. We also demonstrate positional control of the ZIF-8 films and characterize the contributions of membrane defects and lumen bypass.

scholarly journals A STUDY ON HYDROTHERMAL SYNTHESIS OF METAL–ORGANIC FRAMEWORK MIL-101

2017 ◽  
Vol 126 (1C) ◽  
pp. 21
Author(s):  
Võ Thị Thanh Châu ◽  
Hoàng Văn Đức
Keyword(s):  
Hydrothermal Synthesis ◽  
Photoelectron Spectroscopy ◽  
Metal Organic Framework ◽  
Hydrothermal Process ◽  
Nitrogen Adsorption ◽  
X Ray ◽  
Transmission Electron ◽  
Metal Organic ◽  
Adsorption Desorption ◽  
Organic Framework

<p>In the present paper, a synthesis of MIL-101 by hydrothermal process was demonstrated. The obtained samples were characterized by powder X-ray diffraction (PXRD), transmission electron microscope (TEM), nitrogen adsorption/desorption isotherms at 77K, X-ray photoelectron spectroscopy (XPS). The results showed that MIL-101 synthesized by optimal conditions exhibited high crystallinity and surface area. The obtained MIL-101 possesses high stability in water and several organic solvents.</p><p><strong>Keywords:</strong> MIL-101, hydrothermal synthesis, metal organic framework-101. </p>

Efficient SO2 Removal Using a Microporous Metal–Organic Framework with Molecular Sieving Effect

2019 ◽  
Vol 59 (2) ◽  
pp. 874-882 ◽  
Author(s):  
Yan Zhang ◽  
Zhonghang Chen ◽  
Xing Liu ◽  
Ze Dong ◽  
Peixin Zhang ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
So2 Removal ◽  
Metal Organic ◽  
Molecular Sieving ◽  
Sieving Effect ◽  
Organic Framework

scholarly journals Paralyzed membrane: Current-driven synthesis of a metal-organic framework with sharpened propene/propane separation

2018 ◽  
Vol 4 (10) ◽  
pp. eaau1393 ◽  
Author(s):  
Sheng Zhou ◽  
Yanying Wei ◽  
Libo Li ◽  
Yifan Duan ◽  
Qianqian Hou ◽  
...  
Keyword(s):  
Large Scale ◽  
Metal Organic Framework ◽  
Great Promise ◽  
Cubic Phase ◽  
Membrane Composition ◽  
Zeolitic Imidazolate Framework ◽  
Metal Organic ◽  
Dynamics Simulations ◽  
Molecular Sieving ◽  
Organic Framework

Metal-organic framework (MOF) membranes show great promise for propene/propane separation, yet a sharp molecular sieving has not been achieved due to their inherent linker mobility. Here, zeolitic imidazolate framework ZIF-8–type membranes with suppressed linker mobility are prepared by a fast current–driven synthesis (FCDS) strategy within 20 min, showing sharpened molecular sieving for propene/propane separation with a separation factor above 300. During membrane synthesis, the direct current promotes the metal ions and ligands to assemble into inborn-distorted and stiffer frameworks with ZIF-8_Cm (a newly discovered polymorph of ZIF-8) accounting for 60 to 70% of the membrane composition. Molecular dynamics simulations further verify that ZIF-8_Cm is superior to ZIF-8_I 4¯3m (the common cubic phase) for propene/propane separation. FCDS holds great potential to produce high-quality, ultrathin MOF membranes on a large scale.

A Pt/Al2O3-supported metal–organic framework film as the size-selective core–shell hydrogenation catalyst

2016 ◽  
Vol 52 (44) ◽  
pp. 7161-7163 ◽  
Author(s):  
Sonia Aguado ◽  
Sawsan El-Jamal ◽  
Frederic Meunier ◽  
Jerome Canivet ◽  
David Farrusseng
Keyword(s):  
Metal Organic Framework ◽  
Hydrogenation Catalyst ◽  
Homogeneous Layer ◽  
Core Shell ◽  
Double Bonds ◽  
Metal Organic ◽  
Molecular Sieving ◽  
Pt Catalyzed ◽  
Organic Framework ◽  
Supported Metal

The substituted imidazolate-based MOF (SIM-1) easily forms a homogeneous layer at the surface of millimetric platinum-loaded alumina beads. This new core–shell SIM-1@Pt/Al2O3 catalyst shows the fine molecular sieving effect for the Pt-catalyzed hydrogenation of carbon–carbon double bonds.

Sign in / Sign up

Export Citation Format

Share Document