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IR spectra measured during the adsorption of dry CO2 on AMS-6/APMDES material: (a) after 2 min (dotted line) and after 60 min (solid line), (b) 2 min spectrum subtracted from the 60 min spectrum representing mainly slowly forming silylpropylcarbamate, (c) subtraction of spectrum b from the 60 min spectrum representing rapidly forming ammonium carbamate ion pairs and hydrogen-bonded carbamic acid. Assignations are presented in Table 2.
