Line Plot from Scientific Research

Breakthrough profiles collected for Cu2.7-MFU-4lexposed to compressed air streams with the indicated humidity levels. Sharp breakthrough of N2occurs before O2, highlighting the selectivity of the framework for O2over N2. Symbols correspond to averages of data from triplicate runs, and solid lines are guides for the eye (seeFigures S51–S55for individual data sets andTable S12). Small quantities of O2detected after 10 min before breakthrough are attributed to displacement of a small amount of O2by N2. A small amount of both gases detected above the baseline att= 0 is attributed to trace air present within the connection between the breakthrough column and the gas chromatograph that remains after flushing the system prior to the start of the measurement (see Section S1.13 of theSupporting Informationand Figure S62 for details).

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