Equilibrium data and diffusion characteristics of propane and propylene were determined on mesoporous adsorbents modified with an organic molecule (APTES) and/or impregnated with AgNO3, in order to obtain a separation by adsorption via π-complexation. Adsorption capacities were determined by a gravimetric technique, while diffusion characteristics were evaluated by the ZLC technique. The equilibrium isotherms data showed that the modification with an organic molecule will weaken the π-interaction between Ag+ and double C=C bond. On the other hand slightly higher adsorption capacities for propylene (about 1.5 mol/kg) were obtained for the sample prepared by a direct impregnation with larger amounts of AgNO3 (M4 sample). Diffusion runs confirmed that the propane desorption rate on M4 sample was much higher compared to propylene. This evidence leads to a potential application of that adsorbent material for a kinetic separation.

Adsorption and diffusion of propane and propylene in Ag+-impregnated MCM-41 / Iucolano, Fabio; Aprea, Paolo; Caputo, Domenico; Colella, Carmine; M., Eic; Q., Huang. - In: ADSORPTION. - ISSN 0929-5607. - STAMPA. - 14:2-3(2008), pp. 241-246. [10.1007/s10450-008-9106-0]

Adsorption and diffusion of propane and propylene in Ag+-impregnated MCM-41

IUCOLANO, FABIO;APREA, PAOLO;CAPUTO, DOMENICO;COLELLA, CARMINE;
2008

Abstract

Equilibrium data and diffusion characteristics of propane and propylene were determined on mesoporous adsorbents modified with an organic molecule (APTES) and/or impregnated with AgNO3, in order to obtain a separation by adsorption via π-complexation. Adsorption capacities were determined by a gravimetric technique, while diffusion characteristics were evaluated by the ZLC technique. The equilibrium isotherms data showed that the modification with an organic molecule will weaken the π-interaction between Ag+ and double C=C bond. On the other hand slightly higher adsorption capacities for propylene (about 1.5 mol/kg) were obtained for the sample prepared by a direct impregnation with larger amounts of AgNO3 (M4 sample). Diffusion runs confirmed that the propane desorption rate on M4 sample was much higher compared to propylene. This evidence leads to a potential application of that adsorbent material for a kinetic separation.
2008
Adsorption and diffusion of propane and propylene in Ag+-impregnated MCM-41 / Iucolano, Fabio; Aprea, Paolo; Caputo, Domenico; Colella, Carmine; M., Eic; Q., Huang. - In: ADSORPTION. - ISSN 0929-5607. - STAMPA. - 14:2-3(2008), pp. 241-246. [10.1007/s10450-008-9106-0]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/101122
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