The ()ads values were derived from the application of the free software pyIAST () to the experimental single-component isotherms collected at the chosen temperature. The initial composition (%) for the calculation were [15:85] for the [CO2:N2] pair. This relative ratio was selected to mimic the general feed composition of a coal-fired power station. A Henry or a BET model was employed for the isotherms fitting. For a detailed explanation of these models and the related parameters, see the pyIAST webpage and documentation.