Monday 13 December 2021
CO2 sorption in clay interlayers controlled by their interlayer cations: new article published in The Journal of Physical Chemistry C
The layer spacing of smectites (swelling layered clays) is set by the size of their interlayer cations. In this article, we demonstrate that by tuning the interlayer cation size, we can control the carbon dioxide sorption characteristics of this clay. Carbon dioxide sorption in clays is relevant in the context of carbon sequestration and gas separation. In particular, for cations that have approximately the same size as a carbon dioxide molecule, the clay readily sorbs up to 1.7 mmol of carbon dioxide per gram clay at room temperature or ambient pressure.
