Thermally Rearranged Poly(benzoxazole) Copolymer Membranes for Improved Gas Separation: A Review

2016 ◽  
Vol 69 (6) ◽  
pp. 601 ◽  
Author(s):  
Colin A. Scholes
Keyword(s):  
Gas Separation ◽  
High Performance ◽  
Polymeric Membranes ◽  
Separation Performance ◽  
Future Directions ◽  
Current State ◽  
Wide Range ◽  
Rearrangement Process ◽  
Superior Mechanical Properties ◽  
Review Reports

Polymeric membranes for gas separation have application in a wide range of industries such as natural gas sweetening and air enrichment. Recently, high-performance gas separation polymeric membranes have been developed based on a novel thermal rearrangement process that produces the resistant poly(benzoxazole) (TR-PBO). This review reports on the current state of the art TR-PBO membranes for gas separation and the underlying chemistry needed to achieve such high separation performance. Particular focus is applied to copolymers based on TR-PBO for membranes as these have attracted considerable research interest recently for their gas separation performance and superior mechanical properties compared with TR-PBO. Also included in this review is a discussion of the future directions of research on TR-PBO-based membranes for gas separation.

scholarly journals Recent Progress in the Engineering of Polymeric Membranes for CO2 Capture from Flue Gas

Membranes ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 365
Author(s):  
Yang Han ◽  
Yutong Yang ◽  
W. S. Winston Ho
Keyword(s):  
Gas Separation ◽  
Co2 Capture ◽  
Flue Gas ◽  
Large Scale ◽  
Recent Progress ◽  
Scale Up ◽  
Polymeric Membranes ◽  
Separation Performance ◽  
Separation Membranes ◽  
Gas Separation Membranes

CO2 capture from coal- or natural gas-derived flue gas has been widely considered as the next opportunity for the large-scale deployment of gas separation membranes. Despite the tremendous progress made in the synthesis of polymeric membranes with high CO2/N2 separation performance, only a few membrane technologies were advanced to the bench-scale study or above from a highly idealized laboratory setting. Therefore, the recent progress in polymeric membranes is reviewed in the perspectives of capture system energetics, process synthesis, membrane scale-up, modular fabrication, and field tests. These engineering considerations can provide a holistic approach to better guide membrane research and accelerate the commercialization of gas separation membranes for post-combustion carbon capture.

An investigation of blended polymeric membranes and their gas separation performance

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102671-102679 ◽  
Author(s):  
Marjan Farnam ◽  
Hilmi Mukhtar ◽  
Azmi Mohd Shariff
Keyword(s):  
Gas Separation ◽  
Polymeric Membranes ◽  
Separation Performance ◽  
Gas Separation Performance

Novel blend glassy/rubbery polymeric membranes were produced, and, by adding 20% PVAc to PES, good selectivity results were obtained.

scholarly journals Polyvinylnorbornene Gas Separation Membranes

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 704 ◽  
Author(s):  
Wouter Dujardin ◽  
Cédric Van Goethem ◽  
Julian A. Steele ◽  
Maarten Roeffaers ◽  
Ivo F. J. Vankelecom ◽  
...  
Keyword(s):  
Gas Separation ◽  
Chemical Resistance ◽  
Fine Tuning ◽  
Gas Separations ◽  
Separation Performance ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Addition Polymerization ◽  
Wide Range ◽  
Gas Separation Performance

Polynorbornenes are already used in a wide range of applications. They are also considered materials for polymer gas separation membranes because of their favorable thermal and chemical resistance, rigid backbone and varied chemistry. In this study, the use of 5-vinyl-2-norbornene (VNB), a new monomer in the field of gas separations, is investigated by synthesizing two series of polymers via a vinyl-addition polymerization. The first series investigates the influence of the VNB content on gas separation in a series of homo and copolymers with norbornene. The second series explores the influence of the crosslinking of polyvinylnorbornene (pVNB) on gas separation. The results indicate that while crosslinking had little effect, the gas separation performance could be fine-tuned by controlling the VNB content. As such, this work demonstrates an interesting way to significantly extend the fine-tuning possibilities of polynorbornenes for gas separations.

A Study on Permeabilities and Selectivities of Small-Molecule Gases for Composite Ionic Liquid and Polymer Membranes

2013 ◽  
Vol 448-453 ◽  
pp. 765-770 ◽  
Author(s):  
Li Zhe Liang ◽  
Quan Gan ◽  
Paul Nancarrow
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Gas Separation ◽  
Elevated Temperatures ◽  
Polymer Membranes ◽  
Porous Polymer ◽  
Separation Performance ◽  
Thermal Stabilities ◽  
Wide Range ◽  
Supported Ionic Liquid Membranes

In recent years, the utilisation of ionic liquids supported on porous polymer membranes has been demonstrated to enhance gas separation performance by improving both permeability and selectivity for several industrially-relevant gas mixtures. However, the use of such supported ionic liquid membranes (SILMs) is normally not feasible at elevated process temperatures due to the resulting decrease in ionic liquid viscosity, which can lead to increased loss of ionic liquid from the membrane support during operation. In addition, many of the polymer membranes typically used in SILMs exhibit relatively poor mechanical and thermal stabilities at high temperatures. To overcome these problems associated with SILMs, thermally-stable composite ionic liquid and polymer membranes (CILPMs) have been fabricated in this study, thus exploiting the beneficial properties of ionic liquids for gas separation at elevated temperatures. Poly (pyromellitimide-co-4,4-oxydianiline) (PMDA-ODA PI) in combination with the ionic liquid, [C4mi [NTf2] were used to fabricate the CILPMs. A measurement rig was designed and built to determine permeabilities and selectivities of the CILPMs for H2, N2, CO, CO2 and CH4 over a range of pressures and temperatures. The fabricated CILPMs were shown to maintain excellent mechanical and thermal stability over a wide range of processing conditions. Temperature was shown to greatly affect both permeability and selectivity of the membranes, whilst pressure had less influence. The incorporation of [C4mi [NTf2] into the membranes was found to significantly increase CO2 permeation and, therefore, it is anticipated that these CILPMs hold significant potential for CO2 separation applications.

scholarly journals Analytical Performance of an HPLC and CZE Methods for the Analysis and Separation of Perindopril Erbumine and Indapamide

2015 ◽  
Vol 61 (4) ◽  
pp. 324-327 ◽  
Author(s):  
Ion Valentin ◽  
Imre Silvia ◽  
Cârje Anca Gabriela ◽  
Muntean Daniela Lucia
Keyword(s):  
High Performance ◽  
Enzyme Inhibitor ◽  
Comparative Method ◽  
Separation Performance ◽  
Electrophoretic Method ◽  
Perindopril Erbumine ◽  
Wide Range ◽  
Electrophoretic Separations ◽  
Capillary Zone ◽  
Electrophoresis System

AbstractIntroduction: Perindopril, as an angiotensin converting enzyme inhibitor and indapamide, as a thiazide like diuretic, can be administrated together for the treatment of high blood preasure and other cardiovascular diseases. The aim of this study was to develop two simple and reliable separation methods for perindopril and indapamide by high performance liquid chromatography and capillary zone electrophoresis in order to evaluate their behaviour under separation conditions, for simultaneous separation.Materials and methods: Standard solutions of perindopril erbumine and indapamide in proper solvents were analized. An Agilent 1100 series HPLC system was used for the separation of the two analytes on a C18 stationary phase (Zorbax Stable Bond 3.5 µm), under an isocratic elution. As a comparative method, an Agilent 7100 series capillary electrophoresis system was used for the development of the electrophoretic method.Results: Both developed methods turned to comply to the separation performance parameters such as resolution and selectivity, with low limits of detection, wide range of liniarity. No statistical difference concerning precision of the qualitative parameters was observed. Time analysis less than 5 minutes both for chromatographic and electrophoretic separations proved to generate cost and time effective analysis methods.Conclusions: Two analytical methods, HPLC and CZE respectively, for the separation of perindoprile erbumine and indapamide have been successfully developed, both recording satisfactory analytical parameters.

scholarly journals The prospect of synthesis of PES/PEG blend membranes using blend NMP/DMF for CO2/N2 separation

2021 ◽  
Vol 28 (5) ◽  
Author(s):  
Fadel Abdul Hadi Juber ◽  
Zeinab Abbas Jawad ◽  
Bridgid Lai Fui Chin ◽  
Swee Pin Yeap ◽  
Thiam Leng Chew
Keyword(s):  
Gas Separation ◽  
Carbon Capture ◽  
Membrane Separation ◽  
Carbon Capture And Storage ◽  
Polymeric Membranes ◽  
Polymeric Membrane ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Trade Off ◽  
Blend Membranes

AbstractCarbon dioxide (CO2) emissions have been the root cause for anthropogenic climate change. Decarbonisation strategies, particularly carbon capture and storage (CCS) are crucial for mitigating the risk of global warming. Among all current CO2 separation technologies, membrane separation has the biggest potential for CCS as it is inexpensive, highly efficient, and simple to operate. Polymeric membranes are the preferred choice for the gas separation industry due to simpler methods of fabrication and lower costs compared to inorganic or mixed matrix membranes (MMMs). However, plasticisation and upper-bound trade-off between selectivity and permeability has limited the gas separation performance of polymeric membranes. Recently, researchers have found that the blending of glassy and rubbery polymers can effectively minimise trade-off between selectivity and permeability. Glassy poly(ethersulfone) (PES) and rubbery poly(ethylene) glycol (PEG) are polymers that are known to have a high affinity towards CO2. In this paper, PEG and PES are reviewed as potential polymer blend that can yield a final membrane with high CO2 permeance and CO2/nitrogen (N2) selectivity. Gas separation properties can be enhanced by using different solvents in the phase-inversion process. N-Methyl-2-Pyrrolidone (NMP) and Dimethylformamide (DMF) are common industrial solvents used for membrane fabrication. Both NMP and DMF are reviewed as prospective solvent blend that can improve the morphology and separation properties of PES/PEG blend membranes due to their effects on the membrane structure which increases permeation as well as selectivity. Thus, a PES/PEG blend polymeric membrane fabricated using NMP and DMF solvents is believed to be a major prospect for CO2/N2 gas separation.

SAPO-34 zeotype membrane for gas sweetening

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
I Gusti B. N. Makertihartha ◽  
Kevin S. Kencana ◽  
Theodorus R. Dwiputra ◽  
Khoiruddin Khoiruddin ◽  
Graecia Lugito ◽  
...  
Keyword(s):  
Gas Separation ◽  
Future Development ◽  
High Performance ◽  
Energy Requirement ◽  
Scale Up ◽  
Separation Performance ◽  
Membrane Gas Separation ◽  
Zeolite Membranes ◽  
Gas Sweetening ◽  
High Separation

AbstractMembranes are considered promising tools for gas sweetening due to their lower footprint (i.e., area and energy requirement, considering elimination of solvent/absorbent and its associated regeneration procedures), and ease of scale-up. Performing membrane gas separation is strongly dependent on membrane materials. With a 0.38-nm pore size, the SAPO-34 membrane surpasses the upper bond limit for CO2/CH4 separation. However, preparing defect-free and high-performance zeolite membranes is quite challenging. This paper reviews gas transport and separation mechanisms in SAPO-34 membranes, and it discusses prospective approaches for obtaining membranes with defect-free selective layers and hence high separation performance. Highlights, as well as the authors’ perspectives on the future development of SAPO-34 membranes in the field of gas separation, are pointed out.

Brominated Poly(2,6-dimethyl-1,4-phenylene oxide)/Carbon Materials Nanocomposite Membranes for CO2/N2 Separation

2015 ◽  
Vol 1118 ◽  
pp. 176-181 ◽  
Author(s):  
Lin Guo ◽  
Bing Yu ◽  
Hai Lin Cong ◽  
Xiu Lan Zhang ◽  
Ze Jing Li ◽  
...  
Keyword(s):  
Carbon Black ◽  
Gas Separation ◽  
Carbon Materials ◽  
Polymeric Materials ◽  
Polymeric Membranes ◽  
Separation Performance ◽  
Nanocomposite Membranes ◽  
Phenylene Oxide ◽  
Gas Separation Performance ◽  
Matrix Nanocomposite

The mechanical strength of polymeric membranes is one of the limitations for their applications. Carbon materials are effective in reinforcing polymeric materials, but it is unknown whether they would degrade the membranes’ gas separation performance. In this paper, using brominated poly (2,6-dimethyl-1,4-phenylene oxide) (BPPO) as matrix, nanocomposite membranes of BPPO/graphene, BPPO/carbon back and BPPO/fullerene were prepared. The CO2 permeability and CO2/N2 selectivity of the nanocomposite membranes were studied. Different from the BPPO/carbon black and BPPO/fullerene membranes, the BPPO/graphene membrane was found having improved gas separation performance after incorporation 2 wt. % graphene.

scholarly journals Mechanism and Compatibility of Pretreated Lignocellulosic Biomass and Polymeric Mixed Matrix Membranes: A Review

Membranes ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 370
Author(s):  
Abiodun Abdulhameed Amusa ◽  
Abdul Latif Ahmad ◽  
Jimoh Kayode Adewole
Keyword(s):  
Lignocellulosic Biomass ◽  
High Performance ◽  
Polymeric Membranes ◽  
Hydroxyl Group ◽  
Mixed Matrix Membranes ◽  
Separation Performance ◽  
Polymer Modification ◽  
Mixed Matrix ◽  
Physical And Chemical ◽  
Matrix Membranes

In this paper, a review of the compatibility of polymeric membranes with lignocellulosic biomass is presented. The structure and composition of lignocellulosic biomass which could enhance membrane fabrications are considered. However, strong cell walls and interchain hindrances have limited the commercial-scale applications of raw lignocellulosic biomasses. These shortcomings can be surpassed to improve lignocellulosic biomass applications by using the proposed pretreatment methods, including physical and chemical methods, before incorporation into a single-polymer or copolymer matrix. It is imperative to understand the characteristics of lignocellulosic biomass and polymeric membranes, as well as to investigate membrane materials and how the separation performance of polymeric membranes containing lignocellulosic biomass can be influenced. Hence, lignocellulosic biomass and polymer modification and interfacial morphology improvement become necessary in producing mixed matrix membranes (MMMs). In general, the present study has shown that future membrane generations could attain high performance, e.g., CO2 separation using MMMs containing pretreated lignocellulosic biomasses with reachable hydroxyl group radicals.

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