Polyetheramine–polyhedral oligomeric silsesquioxane organic–inorganic hybrid membranes for CO2/H2 and CO2/N2 separation

Chua, Mei Ling; Shao, Lu; Low, Bee Ting; Xiao, Youchang; Chung, Tai‐Shung

doi:10.1016/j.memsci.2011.09.008

Cited by 74 publications

(28 citation statements)

References 35 publications

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“…The TGA analyses of the MMM are presented in Figure 4. In can be observed that the decomposition of the pure PTMSP agrees with literature [45] and the thermal stability of the MMM is very similar to that of pure PTMSP, resisting temperatures up to 573 K. There is a lower deviation from the nominal values than those obtained for pure silica ITQ-29 [30], which points out to a good dispersion and adhesion of the particles with Si/Al of 5 in the membrane matrix. These results point out that these materials are thermally stable up to 573K, being potential materials to be used at industrial level where processes at elevated temperatures are carried out.…”

Section: Synthesis and Characterizationsupporting

confidence: 82%

Permselectivity improvement in membranes for CO2/N2 separation

Fernández-Barquín

Casado-Coterillo

Palomino

et al. 2016

Separation and Purification Technology

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In this work, small-pore zeolites of different topology (CHA, LTA5, Rho), all with Si/Al ratio of 5, have been added to highly permeable poly(1-trimethylsilyl-1-propyne) (PTMSP) to increase its selectivity and thermal and mechanical stability. Membranes were characterized by TGA, XRD, SEM and CO2 and N2 single gas permeation measurements at different temperatures. TGA reveal that the thermal resistance of the membranes is as good as pure PTMSP polymer. XRD and SEM results reflect that there is good interaction between the fillers and the membrane matrix, at 5 and 10 wt. % zeolite loadings, while at 20 wt.% a dual layer stucture is formed, when Rho zeolite is the filler, because the particle size of Rho is higher than those of LTA5 or CHA, and voids appear that limit the permselectivity performance. In single gas permeation of N2 and CO2, the influence of temperature, zeolite loading and type is analyzed. The selectivity of pure PTMSP is considerably enhanced with the addition of the zeolites and the increase of temperature, and the MMM loaded with 5 wt. % zeolite surpassed the Robeson's upper bound for CO2/N2 separation, without decreasing the permeability too much. Upon increasing temperature from 298 to 333 K, the permselectivity is enhanced even further without loss of permeability. The 5 wt% loaded membranes were tested in CO2/N2 mixed gas separation experiments at 333 K and 12.5 wt. % CO2 in the feed, and the permselectivity of LTA5-and Rho-PTMSP membranes was further enhanced, compared with the single gas permeation experiments.

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Section: Synthesis and Characterizationsupporting

confidence: 82%

Permselectivity improvement in membranes for CO2/N2 separation

Fernández-Barquín

Casado-Coterillo

Palomino

et al. 2016

Separation and Purification Technology

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“…The crystallization of polyether block starts at À 5 1C and ends at À 22 1C as the sample is cooled down to À 100 1C (step 3). The sample is heated to 100 1C and cooled down to À 100 1C for two more times (steps [4][5][6][7][8][9][10][11][12]. The cooling traces of steps 7 and 11 show that while cooling down from 100 1C the exothermic peak of crystallization of polyether blocks appears at the same temperature.…”

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

“…Incorporation of nanofillers in the polymer matrix resulting in the formation of nanocomposite or mixed matrix membranes is a facile and efficient way towards this endeavor. Nanocomposite membranes can be prepared by physical blending [5][6][7][8] or chemical crosslinking [9,10] with nanosized fillers.…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature upon properties of tailor-made PEBAX® MH 1657 nanocomposite membranes for post-combustion CO2 capture

Rahman

Shishatskiy

Abetz

et al. 2014

Journal of Membrane Science

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a b s t r a c tTailor-made block copolymer nanocomposite membranes are prepared by incorporation of 40 wt% methoxy poly(ethylene glycol) (PEG) functionalized polyoctahedral oligomeric silsesquioxanes (POSS) nanoparticles in commercial thermoplastic elastomer multiblock copolymer PEBAX s MH 1657. Atomic force microscopy was used to find out the location of the nanoparticles in the block copolymer matrix. Separation of CO 2 from N 2 and H 2 is studied by measurements of single gas transport properties of nanocomposite materials using the time-lag method in the temperature range 30-70 1C. PEG functionalized POSS nanoparticles increase the CO 2 permeability of the nanocomposite membranes without loss of CO 2 /N 2 and CO 2 /H 2 selectivity. Thermal properties of the nanocomposite membranes are studied by differential scanning calorimetry (DSC) to assess the stability of the nanocomposite membranes upon melting of polyether and polyamide blocks.

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“…Due to these unique characteristics, several attempts have demonstrated that embedding POSS in polymer matrices resulted in improved gas separation performance. Among these studies, only few studies employed POSS as filler for CO 2 separation, as summarized in Table 1 [32, [35][36][37][38][39]. Since the incorporation of POSS may increase the fractional free volume and/or interactions between POSS and CO 2 , permeability increases due to the enhanced free volume and/or solubility.…”

Section: A C C E P T E D Introductionmentioning

confidence: 99%