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oai:uvadoc.uva.es:10324/728842025-03-26T19:10:02Zcom_10324_1157com_10324_931com_10324_894col_10324_1298

Radmanesh, Farzaneh Sudholter, Ernst J.R. Elshof, Maria G. Benes, Nieck E. Producción Científica An interfacial polymerization process is introduced for the fabrication ofthermally stable cyclomatrix poly(phenoxy)phosphazenes thin-film com-posite membranes that can sieve hydrogen from hot gas mixtures. Byreplacing the conventionally used aqueous phase with dimethyl sulfoxide/potassium hydroxide, a variety of biphenol molecules are deprotonated toaryloxide anions that react with hexachlorocyclotriphosphazene dissolvedin cyclohexane to form a thin film of a highly cross-linked polymer film. Thefilm membranes have persistent permselectivities for hydrogen over nitrogen(16–27) and methane (14–30) while maintaining hydrogen permeances in theorder of (10−8–10−7 mol m−2s−1Pa−1) at temperatures as high as 260 °C anddo not lose their performance after exposure to 450 °C. The unprecedentedthermal stability of these polymer membranes opens the potential for indus-trial membrane gas separations at elevated temperatures. 2024-12-19 2024-12-19 2023 info:eu-repo/semantics/article Adv. Mater. Interfaces 2023, 10, 2202077 https://uvadoc.uva.es/handle/10324/72884 10.1002/admi.202202077 eng https://onlinelibrary.wiley.com/doi/full/10.1002/admi.202202077 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional