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Article Dans Une Revue Microporous and Mesoporous Materials Année : 2018

Extra large pore opening CFI and DON-type zeosils for mechanical energy storage

Résumé

The energetic performances of pure silica CFI and DON-type zeolites (zeosils) were studied by intrusion-extrusion experiments in water and LiCl aqueous solutions at different concentrations. For both zeosils, characterized by a 1D channel system with 14 MR pore openings, when water is used as nonwetting liquid a perfect reversible spring behavior is observed with an intrusion pressure of 75 and 26 MPa, respectively. The lower value for the DON-type structure is probably due to a larger pore aperture. The intrusion pressures in both cases rise considerably with the LiCl concentration, but the doubling of the salt concentration from 10 to 20 M leads only to a slight increase of the intrusion pressure. The maximal stored energy achieves 14.6 and 6.8 J/g for CFI and DON-type zeosil-based systems, respectively. The zeolite samples were characterized before and after intrusion-extrusion experiments by XRD, SEM, N2 adsorption-desorption, TG and NMR analysis in order to get a better understanding of the influence of these intrusion-extrusion experiments on the CFI and DON-type structures.
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Dates et versions

hal-03544602 , version 1 (26-01-2022)

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Laura Ronchi, Andrey Ryzhikov, Habiba Nouali, T. Jean Daou, Sébastien Albrecht, et al.. Extra large pore opening CFI and DON-type zeosils for mechanical energy storage. Microporous and Mesoporous Materials, 2018, 255, pp.211-219. ⟨10.1016/j.micromeso.2017.07.039⟩. ⟨hal-03544602⟩
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