Evolution of the energetic characteristics of {silicalite-1 + water} repulsive clathrates in a wide temperature range. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Chemistry Chemical Physics Année : 2013

Evolution of the energetic characteristics of {silicalite-1 + water} repulsive clathrates in a wide temperature range.

Résumé

Recently {lyophobic porous powders + liquid} systems were proposed to be used for nontraditional energy storage and conversion purposes. This article reports the experimental study of the mechanical behavior, within the pressure-volume (PV) diagram, of the {hydrophobic silicalite-1 + water} system in the temperature range 10-80 °C. Repeated recordings of PV-isotherms and thermal effects of the repulsive clathrate during successive compression-decompression runs were performed using scanning transitiometry. An unexpected steady decline in the intrusion-extrusion pressure and volume of embedded water was found during the forced (repeated) intrusion of water into the pores of silicalite-1 and its spontaneous extrusion at constant temperature. A discussion of possible reasons of unconventional behavior of these heterogeneous systems as well as a thermodynamic analysis is presented.
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Dates et versions

hal-00803256 , version 1 (21-03-2013)

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  • HAL Id : hal-00803256 , version 1

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Oleksii V. Ievtushenko, Valentin A. Eroshenko, Yaroslav G. Grosu, Jean-Marie Nedelec, Jean-Pierre E. Grolier. Evolution of the energetic characteristics of {silicalite-1 + water} repulsive clathrates in a wide temperature range.. Physical Chemistry Chemical Physics, 2013, 15, pp.4451-4457. ⟨hal-00803256⟩
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