(660c) Novel Approach for Kinetic Measurements for Low Capacity Adsorbents
AIChE Annual Meeting
2017
2017 Annual Meeting
Separations Division
Experimental Methods in Adsorption
Thursday, November 2, 2017 - 8:45am to 9:05am
Here we present a novel ZLC approach specifically developed to overcome this issue. The method is based on the measurement of the adsorption capacity at different adsorption times and relates this to the approach of the system to saturation. The new methodology was validated by measuring the kinetics of adsorption of N2 in 4A at very low temperatures (down to -20 °C). A cryogenic cell, purposely designed for ZLC tests at very low temperatures, was used for these experiments. The study was also extended at different temperatures to extract the activation energy of the diffusion process. The new methodology represents an easy alternative to the traditional ZLC approach which allows to overcome the limitations experienced when working with systems characterised by low adsorption capacity.