TY - JOUR
T1 - Possible air separations with superconducting membranes
AU - Gordon, Ryan D.
AU - Cussler Jr, Edward L
PY - 1999/11
Y1 - 1999/11
N2 - Permeabilities of oxygen, nitrogen and helium across porous, superconducting membranes with 5-μm pores are consistent with those across nonsuperconducting membranes with well-defined pores of similar sizes. This is true both at ambient and superconducting temperatures. Transport can occur by Knudsen diffusion, Poiseuille flow, capillary condensation, and turbulent flow. There is no evidence of surface diffusion. Theoretical considerations of superconducting membranes are consistent with these results, indicating when superconductivity might play a role. However, past reports concerning air separation with superconducting membranes with these micrometer-sized pores are questionable.
AB - Permeabilities of oxygen, nitrogen and helium across porous, superconducting membranes with 5-μm pores are consistent with those across nonsuperconducting membranes with well-defined pores of similar sizes. This is true both at ambient and superconducting temperatures. Transport can occur by Knudsen diffusion, Poiseuille flow, capillary condensation, and turbulent flow. There is no evidence of surface diffusion. Theoretical considerations of superconducting membranes are consistent with these results, indicating when superconductivity might play a role. However, past reports concerning air separation with superconducting membranes with these micrometer-sized pores are questionable.
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U2 - 10.1002/aic.690451107
DO - 10.1002/aic.690451107
M3 - Article
AN - SCOPUS:0033230099
SN - 0001-1541
VL - 45
SP - 2313
EP - 2325
JO - AIChE Journal
JF - AIChE Journal
IS - 11
ER -