Directly measured pyrolysis temperature dependence of sorption selectivity for carbon dioxide/methane in Matrimid(R) polyimide-derived carbon molecular sieve membranes.  (Record no. 61972)

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control field 20251009160708.0
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Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-21883
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Title Directly measured pyrolysis temperature dependence of sorption selectivity for carbon dioxide/methane in Matrimid(R) polyimide-derived carbon molecular sieve membranes. 
490 0# - SERIES STATEMENT
Series statement Materials Chemistry and Physics, 314, 128847, 2024.
500 ## - GENERAL NOTE
General note Artículo
520 3# - SUMMARY, ETC.
Summary, etc. In this study, we augment our analysis of pyrolysis temperature dependence of carbon molecular sieve (CMS) membranes derived from a polyimide, Matrimid® useful for advanced CMS membranes. Our direct sorption results prove that the strong pyrolysis temperature dependence of permselectivity for the CO2/CH4 gas pair is promoted by an unusual trend in sorption selectivity reported here. This trend complements conventional diffusion selectivity trends for this pair with increasing pyrolysis temperatures. Our results show that the elimination of pyridinic and pyrrolic groups over the same pyrolysis temperature range occurs. Elimination of such CO2-philic pyridinic and pyrrolic groups typically would be expected to cause a trend opposite to that actually measured directly for CO2/CH4 selectivity. The resulting trend for pyrolysis temperatures between 550 °C and 900 °C, however, can be explained in terms of microporous and ultramicroporous properties of the CMS for increasing pyrolysis temperatures. Specifically, apparent thermodynamic exclusion selectivity of the 0.5 Å larger CH4 vs. the slim 3.3 Å CO2 provides a consistent explanation of the trends. This discovery provides additional options to tune permselectivity of CMS membranes to complement molecular sieving based on diffusion contributions.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element CARBON MOLECULAR SIEVE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element MATRIMID(R)
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PYROLYSIS TEMPERATURA
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element DUAL MODE SORPTION MODEL
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element SORPTION SELECTIVITY
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Vessel, T. C.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Liu, Z.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Koros, W. J.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1UuTHzO9xxMOfDJwUEsD0hAuCIXWDSmKX/view?usp=drive_link">https://drive.google.com/file/d/1UuTHzO9xxMOfDJwUEsD0hAuCIXWDSmKX/view?usp=drive_link</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 09.10.2025   B-21883 09.10.2025 09.10.2025 Documentos solicitados