Anomalous Depletion of Pore-Confined Carbon Dioxide upon Cooling below the Bulk Triple Point: An <i>In Situ</i> Neutron Diffraction Study

Author(s): K. L. Stefanopoulos, F. K. Katsaros, Th. A. Steriotis, A. A. Sapalidis, M. Thommes, D. T. Bowron, and T. G. A. Youngs

Neutron scattering experiments indicate that CO${}_2$ confined in nanopores does not freeze when cooled below the triple point but instead vacates the pores and solidifies in the bulk. Upon reheating the CO${}_2$ refills the nanopores.

[Phys. Rev. Lett. 116, 025502] Published Thu Jan 14, 2016