8th Liquid Matter Conference September 6-10, 2011 Wien, Austria ...

Thu 811:10-14:00P7.67Adsorption behavior and phase transitions of fluidsadsorbed into ZSM-11 and ZSM-5 zeolitesEnrique Lomba, 1 Vicente Sanchez-Gil, 1 Ramona Marguta, 1 Noe G. Almarza, 1 andJose Maria Guil 11 IQFR-CSIC, C/ Serrano 119, E-28006, Madrid, SpainZSM-11 and ZSM-5 zeolites are composed of silica tetrahedra forming a three dimensional networkof channels of 0.5 - 0.6 nm diameter and constitute an excellent test ground to study theeffects of confinement on a variety of fluids. In this work we present a series of computer simulationstudies and adsorption measurements (both volumetric and calorimetric) in order to analyzethe influence of confinement in a series of fluids, ranging from noble gases (Ar, Kr) or methane, toaliphatic and aromatic hydrocarbons (n-hexane, benzene, toluene). We will investigate both peculiarpacking effects and the possible presence of phase transitions, either induced by confinementitself or by the underlying structure of the zeolite.67