ZEOLITIC IMIDAZOLE FRAMEWORK 8 DECORATED GRAPHENE OXIDE (ZIF-8/GO) MIXED MATRIX MEMBRANE (MMM) FOR CO2/CH4 SEPARATION

2017 ◽  
Vol 79 (1-2) ◽  
Author(s):  
Nik Abdul Hadi Md Nordin ◽  
Ahmad Fauzi Ismail ◽  
Noorhana Yahya
Keyword(s):  
Graphene Oxide ◽  
Room Temperature ◽  
Metal Organic Framework ◽  
Gas Permeation ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Temperature Method ◽  
Metal Organic ◽  
Pore Properties

Recently, metal-organic framework composited with graphene oxide (MOF/GO) has been explored and has shown superior properties compared to both of the parent materials. Thus, this study aims to utilize zeolitic imidazole framework 8 (ZIF-8), a subclass of MOF, decorated graphene oxide (ZIF-8/GO) as filler in mixed matrix membrane (MMM) for CO2 separation. ZIF-8/GO has been successfully synthesized using aqueous room temperature method. Distortion of ZIF-8 structure after GO incorporate was observed from TEM and decreasing pore properties, while their crystal structure are intact. The role of the composite on gas permeation is also evaluated using pure N2, CH4 and CO2. The presence of ZIF-8/GO into membrane has increase CO2 permeance from 59.03 ± 13.87 GPU to 79.92 ± 18.26 GPU with insignificant changes in the gas pair selectivities even only 0.5wt% (total solids) of ZIF-8/GO incorporated. 

scholarly journals Leveraging Nanocrystal HKUST-1 in Mixed-Matrix Membranes for Ethylene/Ethane Separation

Membranes ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 74 ◽  
Author(s):  
Chong Yang Chuah ◽  
S.A.S.C. Samarasinghe ◽  
Wen Li ◽  
Kunli Goh ◽  
Tae-Hyun Bae
Keyword(s):  
Metal Organic Framework ◽  
Accessible Surface Area ◽  
Gas Permeation ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Membrane Fabrication ◽  
Metal Organic ◽  
Accessible Surface ◽  
Matrix Membranes

The energy-intensive ethylene/ethane separation process is a key challenge to the petrochemical industry. HKUST-1, a metal–organic framework (MOF) which possesses high accessible surface area and porosity, is utilized in mixed-matrix membrane fabrication to investigate its potential for improving the performance for C2H4/C2H6 separation. Prior to membrane fabrication and gas permeation analysis, nanocrystal HKUST-1 was first synthesized. This step is critical in order to ensure that defect-free mixed-matrix membranes can be formed. Then, polyimide-based polymers, ODPA-TMPDA and 6FDA-TMPDA, were chosen as the matrices. Our findings revealed that 20 wt% loading of HKUST-1 was capable of improving C2H4 permeability (155% for ODPA-TMPDA and 69% for 6FDA-TMPDA) without excessively sacrificing the C2H4/C2H6 selectivity. The C2H4 and C2H6 diffusivity, as well as solubility, were also improved substantially as compared to the pure polymeric membranes. Overall, our results edge near the upper bound, confirming the effectiveness of leveraging nanocrystal HKUST-1 filler for performance enhancements in mixed-matrix membranes for C2H4/C2H6 separation.

Enhanced Dye Adsorption of Mixed‐Matrix Membrane by Covalent Incorporation of Metal‐Organic Framework with Poly(styrene‐ alt ‐maleic anhydride)

2021 ◽  
Vol 6 (19) ◽  
pp. 4689-4697
Author(s):  
Xuan Thang Cao ◽  
The Ky Vo ◽  
Tran Nguyen Minh An ◽  
Trinh Duy Nguyen ◽  
Daniel Manaye Kabtamu ◽  
...  
Keyword(s):  
Maleic Anhydride ◽  
Metal Organic Framework ◽  
Dye Adsorption ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Metal Organic ◽  
Organic Framework

Fabrication and Characterization of PVDF/UiO-66(Zr) Mixed Matrix Membrane on Non-Woven PET Support

2020 ◽  
Vol 1005 ◽  
pp. 108-115
Author(s):  
John Rhoel Cementina ◽  
Michael V. Torres ◽  
Dante P. Bernabe ◽  
Stephen Lirio ◽  
Micah Belle Marie Yap Ang ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Polyvinylidene Fluoride ◽  
Gas Permeability ◽  
Metal Organic Framework ◽  
Pure Water ◽  
Polymer Concentration ◽  
Water Flux ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Metal Organic

Polyvinylidene fluoride (PVDF) membranes, enhanced with metal-organic framework (MOF), were fabricated on a non-woven polyethylene terephthalate (PET) support using the non-solvent induced phase inversion (NIPS) method to produce mixed matrix membrane (MMM). Polymer concentration of 10%, 15%, and 20% were used in the study whereas UiO-66(Zr) was used as a MOF filler. The resulting membranes were characterized in terms of their morphology, porosity, wettability, mechanical strength, pure water flux, and gas permeability. Results show that the presence of UiO-66(Zr) filler improved membrane morphology, mechanical strength, and hydrophobicity of MMM as compared to pristine PVDF.

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.

Metal-organic framework/graphene oxide composite fillers in mixed-matrix membranes for CO2 separation

2018 ◽  
Vol 212 ◽  
pp. 513-522 ◽  
Author(s):  
Stavroula Anastasiou ◽  
Nidhika Bhoria ◽  
Jeewan Pokhrel ◽  
K. Suresh Kumar Reddy ◽  
C. Srinivasakannan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Metal Organic Framework ◽  
Mixed Matrix Membranes ◽  
Co2 Separation ◽  
Mixed Matrix ◽  
Oxide Composite ◽  
Metal Organic ◽  
Organic Framework ◽  
Matrix Membranes

Synergistic solution of CO2 capture by novel lanthanide-based MOF-76 yttrium nanocrystals in mixed-matrix membranes

2019 ◽  
Vol 31 (4) ◽  
pp. 692-712 ◽  
Author(s):  
Sadia Bano ◽  
Saadia R Tariq ◽  
Ayesha Ilyas ◽  
Muhammad Aslam ◽  
Muhammad R Bilad ◽  
...  
Keyword(s):  
Elevated Temperatures ◽  
Metal Organic Framework ◽  
Gas Permeation ◽  
Mixed Matrix Membranes ◽  
X Ray Diffraction ◽  
Mixed Matrix ◽  
The Family ◽  
Metal Organic ◽  
The Ideal ◽  
Matrix Membranes

A porous and thermally stable metal organic framework (MOF) of yttrium and 1,3,5-benzenetricarboxylate was synthesized, which belongs to the family of lanthanide-based MOF-76. Mixed-matrix membranes were developed by incorporating MOF-76 yttrium nanocrystals into Matrimid® 5218. The structure, composition, and morphology of synthesized lanthanide-based MOF-76 yttrium nanocrystals and mixed-matrix membranes were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The characterizations and gas permeation results of the prepared mixed-matrix membranes confirmed better adhesion and distribution of filler particles in the polymer. The results demonstrated that the addition of MOF-76 yttrium nanocrystals to the polymer matrix improved both the gas selectivity and permeability of mixed-matrix membranes compared to pure Matrimid membranes. Permeability of CO2 increased from 7.24 to 27.29 Barrer by increasing the particle content from 0 to 30% in pure gas experiments. Whereas with 30 wt% concentration of MOF-76(Y) at 50:50 feed compositions, the selectivity increased for CO2/CH4 and CO2/N2 was 67% and 68%, respectively. The rise in temperature from 298 to 338 K decreased the ideal selectivity up to 25% for both gas pairs due to polymer chain relaxations at elevated temperatures. The commercial importance of membranes was evaluated at different feed compositions and operating temperatures.

Pore Engineering of Covalently Connected Metal–Organic Framework Nanoparticle–Mixed-Matrix Membrane Composites for Molecular Separation

2020 ◽  
Vol 3 (9) ◽  
pp. 9356-9362 ◽  
Author(s):  
Jooyeon Lee ◽  
Chinnadurai Satheeshkumar ◽  
Hyun Jung Yu ◽  
Seongwoo Kim ◽  
Jong Suk Lee ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Mixed Matrix Membrane ◽  
Mixed Matrix ◽  
Molecular Separation ◽  
Metal Organic ◽  
Organic Framework

Synthesis and gas permselectivity of CuBTC–GO–PVDF mixed matrix membranes

2018 ◽  
Vol 42 (14) ◽  
pp. 12013-12023 ◽  
Author(s):  
Elahe Ahmadi Feijani ◽  
Hossein Mahdavi ◽  
Ahmad Tavassoli
Keyword(s):  
Graphene Oxide ◽  
Gas Separation ◽  
Metal Organic Framework ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Metal Organic ◽  
Gas Separation Performance ◽  
Organic Framework ◽  
Matrix Membranes

A CuBTC (copper(ii) benzene-1,3,5-tricarboxylate) metal organic framework (MOF) and graphene oxide (GO) nanosheets were introduced into a semi-crystalline PVDF to produce mixed matrix membranes (MMMs) to promote gas separation performance.

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