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>

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 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 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 Physical aging in glassy mixed matrix membranes; tuning particle interaction for mechanically robust nanocomposite films

2016 ◽  
Vol 4 (27) ◽  
pp. 10627-10634 ◽  
Author(s):  
Stefan J. D. Smith ◽  
Cher Hon Lau ◽  
James I. Mardel ◽  
Melanie Kitchin ◽  
Kristina Konstas ◽  
...  
Keyword(s):  
Physical Aging ◽  
Particle Interaction ◽  
Nanocomposite Films ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Mixed Matrix ◽  
Membrane Technologies ◽  
Matrix Membranes

Addressing the mechanical weakness and physical aging of glassy mixed matrix membranes to realise their potential for enhancing the separation performance of current membrane technologies.

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.

Sign in / Sign up

Export Citation Format

Share Document