scholarly journals Composite amine mixed matrix membranes for high-pressure CO 2 -CH 4 separation: synthesis, characterization and performance evaluation

2020 ◽  
Vol 7 (9) ◽  
pp. 200795
Author(s):  
Nur Aqilah Bt Fauzan ◽  
Hilmi Mukhtar ◽  
Rizwan Nasir ◽  
Dzeti Farhah Bt Mohshim ◽  
Naviinthiran Arasu ◽  
...  
Keyword(s):  
High Pressure ◽  
Polymeric Membrane ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Asymmetric Structure ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Porous Support ◽  
Phase Inversion Technique ◽  
Matrix Membranes

The key challenge in the synthesis of composite mixed matrix membrane (MMMs) is the incompatible membrane fabrication using porous support in the dry–wet phase inversion technique. The key objective of this research is to synthesize thin composite ternary (amine) mixed matrix membranes on microporous support by incorporating 10 wt% of carbon molecular sieve (CMS) and 5–15 wt% of diethanolamine (DEA) in polyethersulfone (PES) dope solution for the separation of carbon dioxide (CO 2 ) from methane (CH 4 ) at high-pressure applications. The developed membranes were evaluated for their morphological structure, thermal and mechanical stabilities, functional groups, as well as for CO 2 -CH 4 separation performance at high pressure (10–30 bar). The results showed that the developed membranes have asymmetric structure, and they are mechanically strong at 30 bar. This new class of PES/CMS/DEA composite MMMs exhibited improved gas permeance compared to pure PES composite polymeric membrane. CO 2 -CH 4 perm-selectivity enhanced from 8.15 to 16.04 at 15 wt% of DEA at 30 bar pressure. The performance of amine composite MMMs is theoretically predicted using a modified Maxwell model. The predictions were in good agreement with experimental data after applying the optimized values with AARE % = ∼less than 2% and R 2 = 0.99.

scholarly journals Tailoring CO2/CH4 Separation Performance of Mixed Matrix Membranes by Using ZIF-8 Particles Functionalized with Different Amine Groups

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2042 ◽  
Author(s):  
Nadia Hartini Suhaimi ◽  
Yin Fong Yeong ◽  
Christine Wei Mann Ch’ng ◽  
Norwahyu Jusoh
Keyword(s):  
Functional Group ◽  
Polymeric Membrane ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Different Types ◽  
Amine Groups ◽  
Analytical Tools ◽  
Matrix Membranes

CO2 separation from CH4 by using mixed matrix membranes has received great attention due to its higher separation performance compared to neat polymeric membrane. However, Robeson’s trade-off between permeability and selectivity still remains a major challenge for mixed matrix membrane in CO2/CH4 separation. In this work, we report the preparation, characterization and CO2/CH4 gas separation properties of mixed matrix membranes containing 6FDA-durene polyimide and ZIF-8 particles functionalized with different types of amine groups. The purpose of introducing amino-functional groups into the filler is to improve the interaction between the filler and polymer, thus enhancing the CO2 /CH4 separation properties. ZIF-8 were functionalized with three differents amino-functional group including 3-(Trimethoxysilyl)propylamine (APTMS), N-[3-(Dimethoxymethylsilyl)propyl ethylenediamine (AAPTMS) and N1-(3-Trimethoxysilylpropyl) diethylenetriamine (AEPTMS). The structural and morphology properties of the resultant membranes were characterized by using different analytical tools. Subsequently, the permeability of CO2 and CH4 gases over the resultant membranes were measured. The results showed that the membrane containing 0.5 wt% AAPTMS-functionalized ZIF-8 in 6FDA- durene polymer matrix displayed highest CO2 permeability of 825 Barrer and CO2/CH4 ideal selectivity of 26.2, which successfully lies on Robeson upper bound limit.

scholarly journals THE EFFECT OF TYPE ZEOLITE ON THE GAS TRANSPORT PROPERTIES OF POLYIMIDE-BASED MIXED MATRIX MEMBRANES

REAKTOR ◽  
2008 ◽  
Vol 12 (2) ◽  
pp. 68 ◽  
Author(s):  
Tutuk Djoko Kusworo ◽  
Ahmad Fauzi Ismail ◽  
Azeman Mustafa ◽  
Kang Li
Keyword(s):  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Scanning Calorimetry ◽  
Zeolite 4A ◽  
Intensity Changes ◽  
Zeolite Type ◽  
Type Zeolite ◽  
Matrix Membranes

The permeation rates of O2, N2, CO2 and CH4 has been studied for polyimide-polyethersulfone (PI/PES) blends-zeolite mixed matrix membranes synthesized in our laboratory. The study investigated the effect of zeolite loading and different zeolite type on the gas separation performance of these mixed matrix membranes. Frequency shifts and absorption intensity changes in the FTIR spectra of the PI/PES blends as compared with those of the pure polymers indicate that there is a mixing of polymer blends at the molecular level. Differential scanning calorimetry measurements of pure and PI/PES blends membranes have showed one unique glass transition temperature that supports the miscible character of the PI/PES mixture. The PI/PES-zeolite 4A mixed matrix membrane with 25 wt % zeolite loading produced the highest O2/N2 and CO2/CH4 selectivity of around 7.45 and 46.05, respectively.

scholarly journals Development of Polysulfone/Activated Carbon Nanofibers Mixed Matrix Membrane for CO2/CH4 Separation

2018 ◽  
Vol 22 (1) ◽  
Author(s):  
Z. Jamian ◽  
M. H. Tajuddin ◽  
N. Yusof ◽  
F. E. Che Othman
Keyword(s):  
Activated Carbon ◽  
Carbon Nanofiber ◽  
Sem Analysis ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Weight Percentage ◽  
Ft Ir ◽  
Matrix Membranes

This study was performed primarily to investigate the effect of activated carbon nanofiber (ACNF) on carbon dioxide and methane separation performance of mixed matrix membrane (MMM). In this study, polysulfone (PSf)/ACNF mixed matrix membranes was fabricated using dry/wet inversion technique. The effect of PSf concentration and ACNF loading on the performance of mixed matrix membrane in terms of permeability and selectivity of CO2/CH4 gas separation was observed. The fabricated flat sheet mixed matrix membranes were characterized using Fourier Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM) analysis. From the SEM observations, it shows that sponge like structures images were observed upon the addition of ACNFs in the PSf/ACNF membranes was slowly decreased due to increasing weight percentage of ACNF. FT-IR result indicating the presence of carboxyl group in MMM at wavelength 1750 cm-1. Meanwhile, the MMMs were further tested to pure permeation test using pure CO2 and CH4 gas, the CO2 permeance improved and the selectivity of CO2/CH4 increased after the addition of ACNFs. 

scholarly journals Investigation of Azo-cop-2 as a Photo-responsive Low-energy Co2 Adsorbent and Porous Filler in Mixed Matrix Membranes for Co2/N2 Separation

2019 ◽  
Author(s):  
Siyao Li ◽  
Nicholaus Prasetya ◽  
Bradley Ladewig
Keyword(s):  
Uv Light ◽  
Low Energy ◽  
Polymeric Membrane ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Porous Filler ◽  
Excellent Candidate ◽  
Co2 Adsorbent ◽  
Matrix Membranes

<b>Abstract</b><div>As a nanoporous polymer, Azo-COP-2 has been reported for having exceptional CO<sub>2</sub>/N<sub>2</sub> separation performance. In this study, we further investigate the application of Azo-COP-2 as a potential for low-energy CO<sub>2</sub> adsorbent and porous filler in mixed matrix membranes for CO<sub>2</sub>/N<sub>2</sub> separation. As an adsorbent, thanks to the presence of azobenzene in its framework, Azo-COP-2 showed lower CO<sub>2</sub> uptake when irradiated with UV light than its normal condition. Azo-COP-2 also exhibited a highly efficient CO<sub>2</sub> photoswitching between its irradiated and non-irradiated state that has not been observed previously in any nanoporous polymer. Combined with high CO<sub>2</sub>/N<sub>2</sub> selectivity, this property renders Azo-COP-2 to be an excellent candidate for low-energy CO<sub>2</sub> capture. A beneficial property was also exhibited by Azo-COP-2 once they were used as porous filler in mixed-matrix membranes (MMMs) using three different polymer matrices: Matrimid, polysulfone and PIM-1. Both permeability and selectivity of the MMMs could be simultaneously improved once ideal interaction between Azo-COP-2 and the polymer could be established. It was found that Azo-COP-2 – polysulfone composites had the best performance. In this case, it was observed that the CO<sub>2</sub> permeability and CO2/N2 selectivity could be increased up to 160% and 66.7%, respectively. The strategy then shows the great potential of Azo-COP-2 not only for an advanced low-energy CO<sub>2</sub> adsorbent but also to improve the performance of conventional polymeric membrane for CO<sub>2</sub> post-combustion capture.<br></div>

scholarly journals CO2/N2 Separation Properties of Polyimide-Based Mixed-Matrix Membranes Comprising UiO-66 with Various Functionalities

Membranes ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 154 ◽  
Author(s):  
Chong Yang Chuah ◽  
Junghyun Lee ◽  
Juha Song ◽  
Tae-Hyun Bae
Keyword(s):  
Functional Groups ◽  
Accessible Surface Area ◽  
Polymeric Membrane ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Polyimide Membrane ◽  
Accessible Surface ◽  
N2 Sorption

Nanocrystalline UiO-66 and its derivatives (containing -NH2, -Br, -(OH)2) were developed via pre-synthetic functionalization and incorporated into a polyimide membrane to develop a mixed-matrix membrane (MMM) for CO2/N2 separation. Incorporation of the non-functionalized UiO-66 nanocrystals into the polyimide membrane successfully improved CO2 permeability, with a slight decrease in CO2/N2 selectivity, owing to its large accessible surface area. The addition of other functional groups further improved the CO2/N2 selectivity of the polymeric membrane, with UiO-66-NH2, UiO-66-Br, and UiO-66-(OH)2 demonstrating improvements of 12%, 4%, and 17%, respectively. Further evaluation by solubility–diffusivity analysis revealed that the functionalized UiO-66 in MMMs can effectively increase CO2 diffusivity while suppressing N2 sorption, thus, resulting in improved CO2/N2 selectivity. Such results imply that the structural tuning of UiO-66 by the incorporation of various functional groups is an effective strategy to improve the CO2 separation performance of MMMs.

scholarly journals Development and Performance Evaluation of Cellulose Acetate-Bentonite Mixed Matrix Membranes for CO2 Separation

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Asif Jamil ◽  
Momina Zulfiqar ◽  
Usama Arshad ◽  
Subhan Mahmood ◽  
Tanveer Iqbal ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Indentation Test ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Nano Indentation ◽  
Ideal Selectivity ◽  
Phase Inversion Technique ◽  
Uniform Dispersion ◽  
Matrix Membranes

Membrane science is a state-of-the-art environmentally green technology that ascertains superior advantages over traditional counterparts for CO2 capture and separation. In this research, mixed matrix membranes (MMMs) comprising cellulose acetate (CA) with various loadings of bentonite (Bt) clay were fabricated by adopting the phase-inversion technique for CO2/CH4 and CO2/N2 separation. The developed pristine and MMMs were characterized for morphological, thermal, structural, and mechanical analyses. Several techniques such as scanning electron microscopy, thermogravimetric analysis, Fourier transformed infrared spectroscopy, and nano-indentation investigations revealed the promising effect of Bt clay in MMMs as compared to pristine CA membrane. Nano-indentation test identified that elastic modulus and hardness of the MMM with 1 wt. loading was increased by 64% and 200%, respectively, compared to the pristine membrane. The permeability decreased with the incorporation of Bt clay due to uniform dispersion of filler attributed to enhanced tortuosity for the gas molecules. Nevertheless, an increase in gas separation performance was observed with Bt addition up to 1 wt. loading. The opposite trend prevailed with increasing Bt concentration on the separation performance owing to filler agglomeration and voids creation. The maximum value of ideal selectivity (CO2/CH4) was achieved at 2 bar pressure with 1 wt. % Bt loading, which is 79% higher than the pristine CA membrane. For CO2/N2, the ideal selectivity was 123% higher compared to the pristine membrane with 1 wt. % Bt loading at 4 bar pressure.

scholarly journals Membranes for Gas Separation Current Development and Challenges

2015 ◽  
Vol 773-774 ◽  
pp. 1085-1090 ◽  
Author(s):  
Norwahyu Jusoh ◽  
Yin Fong Yeong ◽  
Kok Keong Lau ◽  
Mohd Shariff Azmi
Keyword(s):  
Gas Separation ◽  
Polymeric Materials ◽  
Membrane Technology ◽  
Polymeric Membrane ◽  
Inorganic Membrane ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Separation Performance ◽  
Inorganic Membranes ◽  
Mixed Matrix

—A new bang of natural gas demand has opened up the opportunities towards the utilization of membrane technology for the purification process.The advantages in terms of smaller footprint, lower weight, minimum utility requirement and low labor intensity make them appropriate for wide scale applications. Polymeric membrane is one of the greatest emerging fields in membrane material development. Nevertheless, the separation performance of the existing polymeric materials were reached a limit in the trade-off between permeability and selectivity. The development of inorganic material gives a significance improvement in membrane performance but it outrageously expensive for many applications and having complicated procedure during fabrication process have limit the application of inorganic membrane in gas separation. Thus, a rapid demand in membrane technology for gas separation and the effort toward seeking the membranes with higher permeability and selectivity has motivated the development of mixed matrix membrane. Mixed matrix membrane (MMM) which incorporating inorganic fillers in a polymer matrix is expected to overcome the limitations of the polymeric and inorganic membranes. Apart from an overview of the different membrane materials for gas separation, this paper also highlights the development of mixed matrix membrane and challenges in fabrication of mixed matrix membranes.

scholarly journals Investigation of Azo-cop-2 as a Photo-responsive Low-energy Co2 Adsorbent and Porous Filler in Mixed Matrix Membranes for Co2/N2 Separation

2019 ◽  
Author(s):  
Siyao Li ◽  
Nicholaus Prasetya ◽  
Bradley Ladewig
Keyword(s):  
Uv Light ◽  
Low Energy ◽  
Polymeric Membrane ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Porous Filler ◽  
Excellent Candidate ◽  
Co2 Adsorbent ◽  
Matrix Membranes

<b>Abstract</b><div>As a nanoporous polymer, Azo-COP-2 has been reported for having exceptional CO<sub>2</sub>/N<sub>2</sub> separation performance. In this study, we further investigate the application of Azo-COP-2 as a potential for low-energy CO<sub>2</sub> adsorbent and porous filler in mixed matrix membranes for CO<sub>2</sub>/N<sub>2</sub> separation. As an adsorbent, thanks to the presence of azobenzene in its framework, Azo-COP-2 showed lower CO<sub>2</sub> uptake when irradiated with UV light than its normal condition. Azo-COP-2 also exhibited a highly efficient CO<sub>2</sub> photoswitching between its irradiated and non-irradiated state that has not been observed previously in any nanoporous polymer. Combined with high CO<sub>2</sub>/N<sub>2</sub> selectivity, this property renders Azo-COP-2 to be an excellent candidate for low-energy CO<sub>2</sub> capture. A beneficial property was also exhibited by Azo-COP-2 once they were used as porous filler in mixed-matrix membranes (MMMs) using three different polymer matrices: Matrimid, polysulfone and PIM-1. Both permeability and selectivity of the MMMs could be simultaneously improved once ideal interaction between Azo-COP-2 and the polymer could be established. It was found that Azo-COP-2 – polysulfone composites had the best performance. In this case, it was observed that the CO<sub>2</sub> permeability and CO2/N2 selectivity could be increased up to 160% and 66.7%, respectively. The strategy then shows the great potential of Azo-COP-2 not only for an advanced low-energy CO<sub>2</sub> adsorbent but also to improve the performance of conventional polymeric membrane for CO<sub>2</sub> post-combustion capture.<br></div>

scholarly journals Investigation of Azo-cop-2 as a Photo-responsive Low-energy Co2 Adsorbent and Porous Filler in Mixed Matrix Membranes for Co2/N2 Separation

2019 ◽  
Author(s):  
Siyao Li ◽  
Nicholaus Prasetya ◽  
Bradley Ladewig
Keyword(s):  
Uv Light ◽  
Low Energy ◽  
Polymeric Membrane ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Porous Filler ◽  
Excellent Candidate ◽  
Co2 Adsorbent ◽  
Matrix Membranes

<b>Abstract</b><div>As a nanoporous polymer, Azo-COP-2 has been reported for having exceptional CO<sub>2</sub>/N<sub>2</sub> separation performance. In this study, we further investigate the application of Azo-COP-2 as a potential for low-energy CO<sub>2</sub> adsorbent and porous filler in mixed matrix membranes for CO<sub>2</sub>/N<sub>2</sub> separation. As an adsorbent, thanks to the presence of azobenzene in its framework, Azo-COP-2 showed lower CO<sub>2</sub> uptake when irradiated with UV light than its normal condition. Azo-COP-2 also exhibited a highly efficient CO<sub>2</sub> photoswitching between its irradiated and non-irradiated state that has not been observed previously in any nanoporous polymer. Combined with high CO<sub>2</sub>/N<sub>2</sub> selectivity, this property renders Azo-COP-2 to be an excellent candidate for low-energy CO<sub>2</sub> capture. A beneficial property was also exhibited by Azo-COP-2 once they were used as porous filler in mixed-matrix membranes (MMMs) using three different polymer matrices: Matrimid, polysulfone and PIM-1. Both permeability and selectivity of the MMMs could be simultaneously improved once ideal interaction between Azo-COP-2 and the polymer could be established. It was found that Azo-COP-2 – polysulfone composites had the best performance. In this case, it was observed that the CO<sub>2</sub> permeability and CO2/N2 selectivity could be increased up to 160% and 66.7%, respectively. The strategy then shows the great potential of Azo-COP-2 not only for an advanced low-energy CO<sub>2</sub> adsorbent but also to improve the performance of conventional polymeric membrane for CO<sub>2</sub> post-combustion capture.<br></div>

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