Prediction of phase transitions by investigating CO2 adsorption on 1% lithium doped MIL-101 (Cr) MOF with anomalous type isosteric heat of adsorption

The isosteric heats of adsorption (Qst) for CO2 + 1% Li doped MIL-101 (Cr) metal organic framework (MOF) system below the triple point (200 K-216.5 K) are shown here. At this zone, two sharp spikes of Qst against uptakes are found for identifying the transitions of CO2 layer from the gaseous phase to the solid phase.