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RSS FeedsMolecules, Vol. 23, Pages 2978: Non-Linear Enthalpy-Entropy Correlation for Nitrogen Adsorption in Zeolites (Molecules)

 
 

15 november 2018 15:00:30

 
Molecules, Vol. 23, Pages 2978: Non-Linear Enthalpy-Entropy Correlation for Nitrogen Adsorption in Zeolites (Molecules)
 


The thermodynamics of dinitrogen adsorption in faujasite-type zeolites, Na-Y, Ca-Y and Sr-Y, were investigated by means of variable-temperature infrared spectroscopy, a technique that affords determination of the standard adsorption enthalpy (ΔH0) and entropy (ΔS0) from an analysis of the IR spectra recorded over a range of temperatures. The results obtained, taken together with previously reported values for N2 adsorption on protonic zeolites, revealed a non-linear correlation between ΔH0 and ΔS0. Implications of such a correlation for gas separation and purification by adsorption in porous solids are highlighted.


 
83 viewsCategory: Biochemistry, Chemistry, Molecular Biology
 
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