Development of Hybrid Membranes for Carbon Capture

Kanehashi, Shinji

doi:10.1295/koron.2016-0029

Cited by 6 publications

(2 citation statements)

References 67 publications

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“…The manufacturer indicates that the average pore size of the carbon is 64 Å, which is well outside the range considered here. [47] This order reflects the kinetic diameter of each penetrant as expected for a diffusivity selective glassy polymer [48]. Conversely, there is little, if any, change in the gas selectivities for any gas pair.…”

Section: Characterizationmentioning

confidence: 99%

Can the addition of carbon nanoparticles to a polyimide membrane reduce plasticization?

Kanehashi

Chen

Danaci

et al. 2017

Separation and Purification Technology

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Mixed matrix membranes (MMMs) for carbon dioxide (CO 2) separation composed of a commercial aromatic polyimide as a host matrix and carbon nanoparticles as a filler phase have been prepared by a casting method. The solubility of CO 2 in the MMM could be predicted within error from the pure component isotherms, suggesting that the sorption of polymer to the nanoparticles did not significantly reduce the availability of sites for CO 2 to adsorb. The CO 2 permeability increased with filler loading without a reduction in the gas selectivity, reflecting the increase in fractional free volume provided by the carbon nanoparticles. This was reflected in significant changes in the CO 2 diffusivity. However, contrary to prior work, the use of the carbon nanoparticles was unable to reduce the effects of plasticisation by either CO 2 or water. Changes in the permeability of both water vapor and carbon dioxide occurred with time, particularly for relative humidities beyond 60%. The lack of plasticization resistance may reflect the use of sub-micron nanoparticles rather than larger ones.

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Section: Characterizationmentioning

confidence: 99%

Can the addition of carbon nanoparticles to a polyimide membrane reduce plasticization?

Kanehashi

Chen

Danaci

et al. 2017

Separation and Purification Technology

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“…It has been demonstrated that the addition of nanoparticles to form mixed matrix membranes (MMMs) can increase the permeability and/or selectivity of polymeric membranes [1][2][3][4] and can reduce membrane aging [5][6][7]. These MMMs can potentially be applied to industrial CO2 separation applications such as CO2 capture from flue gases (pre and post combustion), natural gas purification and biogas upgrading.…”

Section: Introductionmentioning

confidence: 99%

Effects of industrial gas impurities on the performance of mixed matrix membranes

Kanehashi

Aguiar

et al. 2018

Journal of Membrane Science

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A series of mixed matrix membranes using a commercially available aromatic polyimide (Matrimid ® 5218) with nanoparticles formed from carbon, a porous organic polymer and metal organic frameworks were prepared to investigate the effects of flue gas impurities on gas permeation. We show that common impurities found in power station flue gases (H2S, SO2, and NO) have significant effects upon the performance of these mixed matrix membranes. The effects of NO, SO2 and H2S on the zeolitic imidazolate framework ZIF-8 are all large and rapid and would render these membranes unsuitable for flue gas service that do not use flue gas desulfurisation. Similarly, H2S adsorbs irreversibly into membranes containing copper benzene-1,3,5-tricarboxylate (Cu-BTC), although the impacts of NO and SO2 are less severe. The membranes containing a porous organic polymer or porous carbon are less affected by these contaminants. In particular, the permeability of the membrane containing the porous organic polymer is still significantly above that of the base Matrimid polymer after exposure for 80 days to 1000 ppm of each contaminant. Further, this mixed matrix structure shows enhanced H2S selectivity. These results suggest that MMMs prepared using organic based nanoparticles can be effective in gas separation applications such as natural gas sweetening, biogas purification and post-combustion carbon capture, when acid gases are present as an impurity.

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Perspective of mixed matrix membranes for carbon capture

Kanehashi

Scholes

2020

Front. Chem. Sci. Eng.

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Development of Hybrid Membranes for Carbon Capture

Cited by 6 publications

References 67 publications

Can the addition of carbon nanoparticles to a polyimide membrane reduce plasticization?

Can the addition of carbon nanoparticles to a polyimide membrane reduce plasticization?

Effects of industrial gas impurities on the performance of mixed matrix membranes

Perspective of mixed matrix membranes for carbon capture

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