Water vapor sorption and transport in carbon molecular sieve membranes (Record no. 54725)

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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625162452.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-20639
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Title Water vapor sorption and transport in carbon molecular sieve membranes
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Volume/sequential designation Journal of Membrane Science, 691, p.122170, 2024
520 3# - SUMMARY, ETC.
Summary, etc. Carbon Molecular Sieve (CMS)membranes have been extensively studied for gas separations. Many gas separation applications involve humidified streams, but reports on water vapor transport in CMS membranes are limited. In this study, water permeability, diffusivity, and solubility were determined as a function of water activity for CMS membranes. Water transport properties of membranes synthesized at different pyrolysis temperatures (550 °C and 800 °C)and with different polyimide precursors were examined. Water sorption followed Type V isotherms as previously observed for the adsorption of water in microporous carbons. Water permeability was much higher at all water activity values for CMS samples prepared at lower pyrolysis temperature. Water permeabilities as a function of water activity of the three different polyimides pyrolyzed at 800 °C were very similar. Water permeability of CMS membranes was high compared to many other polymeric materials, showing potential for dehydration applications. Finally, the steady-state water vapor diffusivity (Dss), estimated from steady state permeability and equilibrium sorption measurements, was compared to the experimental transient diffusivity (D), matching reasonably well.
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Personal name Lopez-Marques, H.
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Personal name Gleason, K. L.
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Personal name Aguilar-Vega, M.
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Personal name Sulub-Sulub, R.
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Personal name Eichler, J. E.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Oh, H.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Kumar, M.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1g_lJlysqi7UHtfxSv446Uaxg1D5jv_A-/view?usp=drivesdk">https://drive.google.com/file/d/1g_lJlysqi7UHtfxSv446Uaxg1D5jv_A-/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-20639 25.06.2025 25.06.2025 Documentos solicitados