(219a) Isosteric Heats of Adsorption of Water on Zeolites
AIChE Annual Meeting
2018
2018 AIChE Annual Meeting
Separations Division
Experimental Methods and Characterization of Adsorbent Materials
Monday, October 29, 2018 - 3:30pm to 3:50pm
The heat evolved by adsorption can be described as a differential heat of adsorption which is defined in thermodynamics models as the isosteric heat qst, which is the heat released by the transfer of gas at fixed adsorbate loading at a certain temperature and pressure [1,2]. The isosteric heat of adsorption can be obtained from adsorption isotherms measured in a narrow temperature rage via Clausius-Clapeyron equation. In present study we want to highlight Gravimetric Dynamic Vacuum Vapor Sorption Analyzer (DVS Vacuum) that is employed to measure water adsorption/desorption isotherms in a broad temperature range in order to calculate the isosteric heat of asdorption.
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