In Fig we see the adsorption behaviour of the hydroquinone-type oF0_R-3_14 structure. This structure adsorbs CO 2 strongly even at room temperature and 1 bar of CO 2 pressure, in addition, the adsorption at 1 bar is strongly temperature-dependent around 300 K, possibly facilitating reversible adsorption by temperature regulation. This structure also has a large difference in affinity for CO 2 and CH 4 , properties which may make it suitable for CO 2 scrubbing from flue gases or for upgrading biogas, assuming the predicted structure can be realized.