Recent developments in membranes for efficient hydrogen purification

Li, Panyuan; Wang, Zhi; Qiao, Zhihua; Liu, Yanni; Cao, Xiaochang; Li, Wen; Wang, Jixiao; Wang, Shichang

doi:10.1016/j.memsci.2015.08.010

Cited by 261 publications

(117 citation statements)

References 330 publications

(373 reference statements)

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“…As anticipated, PBI is less permeable than PPO, because of its rigid aromatic molecular structure and its relatively high chain packing density [15, 31]. High permeability of PPO among aromatic polymeric membranes can be attributed to the ether linkages, which introduce more flexibility to the polymer chain, steric hindrance of the methyl groups and lower packing density due to the absence of polar groups [47, 48].…”

Section: Resultsmentioning

confidence: 99%

“…zeolites, metal organic frameworks (MOFs), mesoporous silicas, carbon molecular sieves, or carbon nanotubes (CNTs) [9, 15–17]. The choice of nanoparticles for the desired gas separation is of greatest significance, because major variables as gas adsorption or molecular sieving abilities of the nanoparticles may seriously affect the MMM performance.…”

Section: Introductionmentioning

confidence: 99%

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Gas Transport Properties of Polybenzimidazole and Poly(Phenylene Oxide) Mixed Matrix Membranes Incorporated with PDA-Functionalised Titanate Nanotubes

et al. 2017

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Functionalised titanate nanotubes (TiNTs) were incorporated to poly(5,5-bisbenzimidazole-2,2-diyl-1,3-phenylene) (PBI) or poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) for improving the interfacial compatibility between the polymer matrix and inorganic material and for altering the gas separation performance of the neat polymer membranes. Functionalisation consisted in oxidative polymerisation of dopamine-hydrochloride on the surface of non-functionalised TiNTs. Transmission electron microscopy (TEM) confirmed that a thin polydopamine (PDA) layer was created on the surface of TiNTs. 1.5, 3, 6, and 9 wt.% of PDA-functionalised TiNTs (PDA-TiNTs) were dispersed to each type of polymer matrix to create so-called mixed matrix membranes (MMMs). Infrared spectroscopy confirmed that –OH and –NH groups exist on the surface of PDA-TiNTs and that the nanotubes interact via H-bonding with PBI but not with PPO. The distribution of PDA-TiNTs in the MMMs was to some extent uniform as scanning electron microscope (SEM) studies showed. Beyond, PDA-TiNTs exhibit positive effect on gas transport properties, resulting in increased selectivities of MMMs. The addition of nanotubes caused a decrease in permeabilities but an increase in selectivities. It is shown that 9 wt.% of PDA-TiNTs in PBI gave a rise to CO2/N2 and CO2/CH4 selectivities of 112 and 63 %, respectively. In case of PPO-PDA-TiNT MMMs, CO2/N2 and CO2/CH4 selectivity increased about 25 and 17 %, respectively. Sorption measurement showed that the presence of PDA-TiNTs in PBI caused an increase in CO2 sorption, whereas the influence on other gases is less noticeable.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gas Transport Properties of Polybenzimidazole and Poly(Phenylene Oxide) Mixed Matrix Membranes Incorporated with PDA-Functionalised Titanate Nanotubes

et al. 2017

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“…Every new membrane technology deployed advances into the energy effectiveness and the intensification of chemical processes. For this reason the environmentally friendly membrane technologies are considered a real solution to stop climate change: in situ CO 2 sequestration and purification of H 2 for its application as an emission‐free fuel are two examples of feasible membrane‐based processes …”

Section: Figurementioning

confidence: 99%

Interactive Thermal Effects on Metal–Organic Framework Polymer Composite Membranes

Cacho‐Bailo

Téllez

Coronas

2016

Chemistry A European J

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Polymeric membranes are important tools for intensifying separation processes in chemical industries, concerning strategic tasks such as CO2 sequestration, H2 production, and water supply and disposal. Mixed-matrix and supported membranes have been widely developed; recently many of them have been based on metal-organic frameworks (MOFs). However, most of the impacts MOFs have within the polymer matrix have yet to be determined. The effects related to thermal behavior arising from the combination of MOF ZIF-8 and polysulfone have now been quantified. The catalyzed oxidation of the polymer is strongly affected by the MOF crystal size and distribution inside the membrane. A 16 wt % 140 nm-sized ZIF-8 loading causes a 40 % decrease in the observed activation energy of the polysulfone oxidation that takes place at a temperature (545 °C) 80 °C lower than in the raw polymer (625 °C).

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“…Mixed-matrix membranes( MMMs)a re attractive for enhancing membrane separation performance because they combine the advantages of the large-scale application of polymericm embranes and the high separation performance of inorganic particles (fillers), which is proposed as an effective means for polymer-matrix membranes to avoid the above-mentioned "trade-off" [17] and obtain high permeability. Mixed-matrix membranes( MMMs)a re attractive for enhancing membrane separation performance because they combine the advantages of the large-scale application of polymericm embranes and the high separation performance of inorganic particles (fillers), which is proposed as an effective means for polymer-matrix membranes to avoid the above-mentioned "trade-off" [17] and obtain high permeability.…”

Section: Introductionmentioning

confidence: 99%

Green Hydrogen Separation from Nitrogen by Mixed‐Matrix Membranes Consisting of Nanosized Sodalite Crystals

et al. 2019

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Nanosized sodalite (Nano‐SOD) crystals were used as active filler to prepare mixed‐matrix membranes (MMMs) for promoting the H2/N2 gas‐separation performance. The Nano‐SOD crystals with extremely small crystallites (40–50 nm) were synthesized from a colloidal suspension free of organic structural directing agent and uniformly dispersed in the polyetherimide (PEI) matrix. The Nano‐SOD filler with a suitable aperture size (2.8 Å) allowed only H2 molecules to pass through and rejected the N2, thus improving the selectivity of the membranes. The high dispersion of Nano‐SOD crystals in the polymer matrix and the interactions between the inorganic and organic phases greatly improved the membrane separation performance and minimized interfacial holes. The MMMs showed a high H2 permeability (≈7155.1 Barrer at 25 °C under atmospheric pressure) and an ideal H2/N2 selectivity factor of approximately 16.9 in a single gas test. Moreover, in a gas mixture (H2/N2, 25–100 °C), the selectivity factor increased significantly to approximately 30.9. The high stability of the MMMs, which consist of highly dispersed Nano‐SOD crystals in a PEI matrix for H2/N2 separation (6 weeks continuous test), makes them an important material for ammonia synthesis applications that require and also release a large amount of H2.

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Recent developments in membranes for efficient hydrogen purification

Cited by 261 publications

References 330 publications

Gas Transport Properties of Polybenzimidazole and Poly(Phenylene Oxide) Mixed Matrix Membranes Incorporated with PDA-Functionalised Titanate Nanotubes

Gas Transport Properties of Polybenzimidazole and Poly(Phenylene Oxide) Mixed Matrix Membranes Incorporated with PDA-Functionalised Titanate Nanotubes

Interactive Thermal Effects on Metal–Organic Framework Polymer Composite Membranes

Green Hydrogen Separation from Nitrogen by Mixed‐Matrix Membranes Consisting of Nanosized Sodalite Crystals

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