Hybrid membranes of metal–organic molecule nanocages for aromatic/aliphatic hydrocarbon separation by pervaporation

2014 ◽  
Vol 50 (90) ◽  
pp. 13921-13923 ◽  
Author(s):  
Cui Zhao ◽  
Naixin Wang ◽  
Lin Wang ◽  
Hongliang Huang ◽  
Rong Zhang ◽  
...  
Keyword(s):  
Organic Molecule ◽  
Aliphatic Hydrocarbon ◽  
Hydrocarbon Mixture ◽  
Hybrid Membranes ◽  
Coating Method ◽  
Metal Organic ◽  
Separation Performances ◽  
Pervaporation Separation

Hybrid membranes of metal–organic molecule nanocages were fabricated on a ceramic hollow tube by a simple immerse-coating method, which exhibit excellent pervaporation separation performances towards the aromatic–aliphatic hydrocarbon mixture.

scholarly journals Improved Desulfurization Performance of Polyethyleneglycol Membrane by Incorporating Metal Organic Framework CuBTC

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 414 ◽  
Author(s):  
Caibin Cai ◽  
Xiaotao Fan ◽  
Xiaolong Han ◽  
Jiding Li ◽  
Harsh Vardhan
Keyword(s):  
Operating Temperature ◽  
Metal Organic Framework ◽  
Mixed Matrix Membrane ◽  
Separation Performance ◽  
Hybrid Membranes ◽  
Mixed Matrix ◽  
Metal Organic ◽  
Pervaporation Separation ◽  
Π Complexation

In this paper, copper benzene-1,3,5-tricarboxylate (CuBTC) was incorporated into polyethylenglyol (PEG) to prepare a mixed matrix membrane (MMM) for pervaporation desulfurization. The characterization results showed that the prepared CuBTC particles had an ideal octahedral shape and micropores. The Cu2+ in CuBTC interacts with thiophene via π-complexation, thus enhancing the separation performance of the hybrid membranes. The effect of CuBTC content and the operating condition on the pervaporation performance of the MMMs was investigated. An optimal pervaporation separation performance was acquired with a permeation flux of 2.21 kg/(m2·h) and an enrichment factor of 8.79, which were increased by 100% and 39% compared with the pristine PEG membrane. Moreover, the CuBTC-filled PEG membrane showed a good stability in the long-term desulfurization under a high operating temperature of 75 °C for five days.

Co(HCOO)2-based hybrid membranes for the pervaporation separation of aromatic/aliphatic hydrocarbon mixtures

2016 ◽  
Vol 520 ◽  
pp. 646-656 ◽  
Author(s):  
Yue Zhang ◽  
Naixin Wang ◽  
Cui Zhao ◽  
Lin Wang ◽  
Shulan Ji ◽  
...  
Keyword(s):  
Aliphatic Hydrocarbon ◽  
Hybrid Membranes ◽  
Hydrocarbon Mixtures ◽  
Pervaporation Separation

scholarly journals Gas Permeation Through Single-Crystal ZIF-8 Membranes

2019 ◽  
Author(s):  
Chen Chen ◽  
Aydin Ozcan ◽  
A. Ozgur Yazaydin ◽  
Bradley Ladewig
Keyword(s):  
Single Crystal ◽  
Grain Boundaries ◽  
Gas Permeability ◽  
Metal Organic Framework ◽  
Gas Permeation ◽  
Microstructural Feature ◽  
Polycrystalline Metal ◽  
Transmission Electron ◽  
Metal Organic ◽  
Separation Performances

<b>Abstract</b><div>Grain boundaries are an unavoidable microstructural feature in intergrown polycrystalline metal-organic framework (MOF) membranes. They have been suspected to be less size-selective than a MOF’s micropores, resulting in suboptimal separation performances – a speculation recently confirmed by transmission electron microscopy of MOF ZIF-8. Single-crystal membranes, without grain boundaries, should confine mass transport to micropores and reflect the intrinsic selectivity of the porous material. Here, we demonstrate the feasibility of fabricating single-crystal MOF membranes and directly measuring gas permeability through such a membrane using ZIF-8 as an exemplary MOF. Our single-crystal ZIF-8 membranes achieved ideal selectivities up to 28.9, 10.0, 40.1 and 3.6 for gas pairs CO<sub>2</sub>/N<sub>2</sub>, CO<sub>2</sub>/CH<sub>4</sub>, He/CH<sub>4</sub> and CH<sub>4</sub>/N<sub>2</sub> respectively, much higher than or reversely selective to over 20 polycrystalline ZIF-8 membranes, unequivocally proving the non-selectivity of grain boundaries. The permeability trend obtained in single-crystal membranes aligned with a force field that had been validated against multiple empirical adsorption isotherms.<br></div>

Metal organic framework MIL-101 coated fiber for headspace solid phase microextraction of volatile aromatic compounds

2015 ◽  
Vol 7 (3) ◽  
pp. 918-923 ◽  
Author(s):  
Xiaohuan Zang ◽  
Guijiang Zhang ◽  
Qingyun Chang ◽  
Xi Zhang ◽  
Chun Wang ◽  
...  
Keyword(s):  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Steel Wire ◽  
Metal Organic Framework ◽  
Sol Gel ◽  
Metal Organic Frameworks ◽  
Coating Method ◽  
Metal Organic ◽  
Gel Technique ◽  
Volatile Aromatic Compounds

The sol–gel technique was applied as a novel coating method in the preparation of metal organic frameworks (MOFs)-based solid phase microextraction (SPME) fibers by coating MIL-101 onto a stainless steel wire.

Functionalization of Cellulose Paper by Coating Nano Metal-Organic Frameworks for Use as Photochromic Material

2021 ◽  
Vol 43 (1) ◽  
pp. 67-67
Author(s):  
Qiang Yang Qiang Yang ◽  
Wei Gong Wei Gong ◽  
Xiaowei Cui Xiaowei Cui ◽  
Chunsheng Zhou Chunsheng Zhou
Keyword(s):  
Functional Materials ◽  
Photochromic Properties ◽  
Coated Paper ◽  
Cellulose Paper ◽  
Chemical Structures ◽  
Coating Method ◽  
Potential Applications ◽  
Metal Organic ◽  
Light Green ◽  
Photochromic Reaction

The cellulose paper-based functional materials modified by Zn-NDI and Cu-NDI were prepared by the coating method. The chemical structures were characterized by FTIR, XRD, UV-vis and SEM, and the photochromic properties of the composite functional materials were studied. The results showed that Zn-NDI and Cu-NDI were successfully prepared and retained on the surface of copy paper, the wavelength of photochromic reaction is between 300-400 nm of MOFs materials. Optical analysis confirmed that the NDI/paper, Zn-NDI/paper and Cu-NDI/paper changed from tan to wheat, light green to olive, and dark tan to brown after 60 seconds of exposure to hernia light irradiations, the MOFs coated paper returned to its original color when it was placed in the dark for 4 hours. The above results indicated that the prepared Zn-NDI and Cu-NDI coated paper composites exhibited excellent photochromic ability and had potential applications in the field of anti-counterfeiting packaging materials.

Coordination-Driven In Situ Self-Assembly Strategy for the Preparation of Metal-Organic Framework Hybrid Membranes

2014 ◽  
Vol 53 (37) ◽  
pp. 9775-9779 ◽  
Author(s):  
Rong Zhang ◽  
Shulan Ji ◽  
Naixin Wang ◽  
Lin Wang ◽  
Guojun Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Metal Organic Framework ◽  
Hybrid Membranes ◽  
Assembly Strategy ◽  
Metal Organic ◽  
Organic Framework

Layer by Layer Construction of Metal–Organic Molecule Bilayer on a Au(111) Surface

2010 ◽  
Vol 39 (2) ◽  
pp. 110-111 ◽  
Author(s):  
Deyu Qu ◽  
Mikio Ito ◽  
Hidenori Noguchi ◽  
Kohei Uosaki
Keyword(s):  
Organic Molecule ◽  
Layer By Layer ◽  
Metal Organic

scholarly journals A Brief Review of Nanocellulose Based Hybrid Membranes for CO2 Separation

Fibers ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 40 ◽  
Author(s):  
Zhongde Dai ◽  
Vegar Ottesen ◽  
Jing Deng ◽  
Ragne M. Lilleby Helberg ◽  
Liyuan Deng
Keyword(s):  
Research Area ◽  
High Specific Surface Area ◽  
Co2 Separation ◽  
Hybrid Membranes ◽  
High Mechanical Strength ◽  
New Class ◽  
Separation Membrane ◽  
New Research ◽  
Separation Performances ◽  
Broad Possibility

Due to the high specific surface area, high mechanical strength and broad possibility of surface modification, nanocellulose has obtained much attention as a new class of bio-based nanomaterials with promising potential in a wide variety of applications. Recently, a considerable amount of research has been aimed to the fabrication of nanocellulose based hybrid membranes for water treatment. However, nanocellulose based hybrid gas separation membrane is still a new research area. Herein, we force on recent advancements in the fabrication methods and separation performances of nanocellulose-based hybrid membranes for CO2 separation, the transport mechanisms involved, along with the challenges in the utilization of nanocellulose in membranes. Finally, some perspectives on future R&D of nanocellulose-based membranes for CO2 separation are proposed.

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