Freezing of Simple Fluids within carbon and silica nanotubes: a combined experimental and simulation approach
|Sliwinska-Bartkowiak Malgorzata 1, Monika Jazdzewska 1, Benoit Coasne 2, Francisco R. Hung 3, Keith E. Gubbins 3|
1. Adam Mickiewicz University, Department of Physics, Umultowska 85, Poznań 61-614, Poland
Recent studies have shown a rich phase behavior associated with freezing and melting of host phases in porous materials. Depending on the adsorbate and the confining solid matrix, the transition temperature may be lowered or raised relative to the bulk value, and new surface-driven phases may intervene between the liquid and solid phases in the pore. We report experimental measurements and molecular simulation results of the freezing and melting behavior of carbon tetrachloride and krypton confined within pores of cylindrical geometry, specifically carbon nanotubes and silica MCM-41 of different pore sizes. Dielectric relaxation spectroscopy was used to determine the experimental melting points of confined carbon tetrachloride, and molecular simulations were performed using grand canonical and parallel tempering Monte Carlo techniques.
Presentation: invited oral at E-MRS Fall Meeting 2005, Symposium G, by Sliwinska-Bartkowiak Malgorzata
See On-line Journal of E-MRS Fall Meeting 2005
Submitted: 2005-06-03 15:55 Revised: 2009-06-07 00:44