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Wicke–Kallenbach Permeation Tests.

YM Yao Ma
NB Nicholas C. Bruno
FZ Fengyi Zhang
MF M. G. Finn
RL Ryan P. Lively
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The separation performance of CMS Membranes was tested using a Wicke–Kallenbach permeation setup, where the total pressure difference across the membrane is maintained at zero. The feed, an equimolar p-xylene/o-xylene mixture vapor carried by nitrogen, flushes the upstream while a nitrogen sweep carries the permeate to a gas chromatograph to determine the xylene flux across the membrane. The free-standing dense CMS membranes were fixed between rings of aluminum tape (0.003 inches thick, McMaster-Carr) with an outer diameter of 1 inch and the inner diameter of 3/8 inch and sealed by a chemically resistant epoxy (MarineWeld 8272, JB Weld).

Copyright and License information:  ©2021-09-07
Published under the PNAS license.

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