Polymeric membranes for the purification of hydrogen

Bernardo, Paola; Jansen, Johannes C.

doi:10.1016/b978-1-78242-361-4.00014-5

Cited by 8 publications

(3 citation statements)

References 101 publications

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“…Although this technology is already available at a commercial scale, further research in materials science is needed to prepare membranes with better and optimum balances between permeability and selectivity. In fact, currently polymeric membranes have a central presence in the membrane market for hydrogen separation, because they admit economical large-scale processing [23]. Among the many diverse types of polymeric membranes, as an evolution of blended and crosslinked polymers [24], MMMs are one of the most well-researched and promising approaches [25][26][27].…”

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confidence: 99%

Hydrogen Recovery by Mixed Matrix Membranes Made from 6FCl-APAF HPA with Different Contents of a Porous Polymer Network and Their Thermal Rearrangement

et al. 2021

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Mixed matrix membranes (MMMs) consisting of a blend of a hydroxypolyamide (HPA) matrix and variable loads of a porous polymer network (PPN) were thermally treated to induce the transformation of HPA to polybenzoxazole (β-TR-PBO). Here, the HPA matrix was a hydroxypolyamide having two hexafluoropropyilidene moieties, 6FCl-APAF, while the PPN was prepared by reacting triptycene (TRP) and trifluoroacetophenone (TFAP) in a superacid solution. The most probable size of the PPN particles was 75 nm with quite large distributions. The resulting membranes were analyzed by SEM and AFM. Up to 30% PPN loads, both SEM and AFM images confirmed quite planar surfaces, at low scale, with limited roughness. Membranes with high hydrogen permeability and good selectivity for the gas pairs H2/CH4 and H2/N2 were obtained. For H2/CO2, selectivity almost vanished after thermal rearrangement. In all cases, their hydrogen permeability increased with increasing loads of PPN until around 30% PPN with ulterior fairly abrupt decreasing of permeability for all gases studied. Thermal rearrangement of the MMMs resulted in higher permeabilities but lower selectivities. For all the membranes and gas pairs studied, the balance of permeability vs. selectivity surpassed the 1991 Robeson’s upper bound, and approached or even exceeded the 2008 line, for MMMs having 30% PPN loads. In all cases, the HPA-MMMs before thermal rearrangement provided good selectivity versus permeability compromise, similar to their thermally rearranged counterparts but in the zone of high selectivity. For H2/CH4, H2/N2, these nonthermally rearranged MMMs approach the 2008 Robeson’s upper bound while H2/CO2 gives selective transport favoring H2 on the 1991 Robeson’s bound. Thus, attending to the energy cost of thermal rearrangement, it could be avoided in some cases especially when high selectivity is the target rather than high permeability.

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confidence: 99%

Hydrogen Recovery by Mixed Matrix Membranes Made from 6FCl-APAF HPA with Different Contents of a Porous Polymer Network and Their Thermal Rearrangement

et al. 2021

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“…The upgradation can be done by absorption, adsorption, cryogenic separation, and membrane separation. 2 Membrane separation, owing to energy efficiency, lower footprint, and ease of operation, has emerged as used technology for hydrogen, 3 natural gas purification, 1 carbon capture, 4 and biogas up-gradation. 5 Biogas upgradation can be done by using polymeric membrane gas separation.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and testing of mixed matrix membranes of UiO‐66‐NH₂ in cellulose acetate for CO₂ separation from model biogas

Tanvidkar

Jonnalagedda

Kuncharam

2022

J of Applied Polymer Sci

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Mixed Matrix Membranes (MMMs) of UiO-66-NH 2 nanoparticles dispersed in Cellulose Acetate (CA) were prepared with filler loading of 2-20 wt%. MMMs were tested for the upgradation of model biogas (60%-40%) mixture of CH 4 /CO 2 at a feed pressure of 2 bar and 1.5 bar. Detailed characterization of MMMs was performed with Fourier transform infrared spectroscopy (FTIR), Thermo-gravimetric analysis (TGA), Differential scanning calorimetry (DSC), and Field emission scanning electron microscopy (FESEM) to investigate the physical and thermal properties. MMMs formed are defects-free, voids-free, and without polymer rigidification, indicating a better filler polymer interface. MMMs showed improved CO 2 permeability while retaining the CO 2 /CH 4 selectivity. The 10 wt.% UiO-66-NH 2 /CA MMM showed optimum gas separation performance with CO 2 permeability of 11 Barrer and CO 2 /CH 4 selectivity of 10. The UiO-66-NH 2 /CA MMMs performed better when compared to the pure CA membrane. The experimental permeability and selectivity data were compared with the predicted data using Maxwell, Lewis-Nielsen, Higuchi, and Bruggeman's model.

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“…Polymers have been considered promising membrane materials owing to their higher processability and affordability compared with those of inorganic materials . Substantial efforts have been devoted to developing hydrogen-selective membranes, and a few polymers have been considered as suitable materials because of their high selectivity for hydrogen. − However, their low gas permeance, which results in low productivity, limits their application in industrial hydrogen purification …”

Section: Introductionmentioning

confidence: 99%

Ultrathin Water-Cast Polymer Membranes for Hydrogen Purification

Park

Kong

Lee

et al. 2022

ACS Appl. Mater. Interfaces

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Among various H2 purification technologies, the use of membrane technology has been considered an ecofriendly approach for addressing the increasing hydrogen demand. Although many H2-selective membrane materials have been reported, processing them into hollow fibers or thin-film composites (TFCs) via traditional methods either affects the performance of the materials or renders their further processing into applicable membrane forms infeasible. Herein, we propose a water-casting method for fabricating TFC membranes for hydrogen purification with high permselectivity. The film integrity and thickness were manipulated by controlling the spreadability of the casting solution, and the resultant water-cast TFC membrane that comprised an ∼30 nm selective layer demonstrated high H2 permeance and H2/CH4 selectivity of approximately 190 GPU and 100, respectively, under optimized conditions. We performed a mixed-gas permeation test using a simulated off-gas of steam–methane reforming from natural gas in a single-stage system and obtained hydrogen gas of >99 mol % purity. This indicates not only the suitability of the water-cast membranes for satisfying the demand for pure hydrogen as a fuel and chemical reagent but also the great potential of the water-casting method for high-performance membranes in various industrial and environmental applications.

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Polymeric membranes for the purification of hydrogen

Cited by 8 publications

References 101 publications

Hydrogen Recovery by Mixed Matrix Membranes Made from 6FCl-APAF HPA with Different Contents of a Porous Polymer Network and Their Thermal Rearrangement

Hydrogen Recovery by Mixed Matrix Membranes Made from 6FCl-APAF HPA with Different Contents of a Porous Polymer Network and Their Thermal Rearrangement

Fabrication and testing of mixed matrix membranes of UiO‐66‐NH₂ in cellulose acetate for CO₂ separation from model biogas

Ultrathin Water-Cast Polymer Membranes for Hydrogen Purification

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Polymeric membranes for the purification of hydrogen

Cited by 8 publications

References 101 publications

Hydrogen Recovery by Mixed Matrix Membranes Made from 6FCl-APAF HPA with Different Contents of a Porous Polymer Network and Their Thermal Rearrangement

Hydrogen Recovery by Mixed Matrix Membranes Made from 6FCl-APAF HPA with Different Contents of a Porous Polymer Network and Their Thermal Rearrangement

Fabrication and testing of mixed matrix membranes of UiO‐66‐NH2 in cellulose acetate for CO2 separation from model biogas

Ultrathin Water-Cast Polymer Membranes for Hydrogen Purification

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Product

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About

Fabrication and testing of mixed matrix membranes of UiO‐66‐NH₂ in cellulose acetate for CO₂ separation from model biogas