Non-Linear Enthalpy-Entropy Correlation for Nitrogen Adsorption in Zeolites

Non-Linear Enthalpy-Entropy Correlation for Nitrogen Adsorption in Zeolites

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 (Δ ⁰) and entropy (Δ ⁰) from an analysis of the IR spectra...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Molecules (Basel, Switzerland) Switzerland), 2018-11, Vol.23 (11), p.2978
Hauptverfasser: Delgado, Montserrat R, Arean, Carlos O
Format: Artikel
Sprache:eng
Schlagworte:
Adsorbents
Adsorption
Correlation
Enthalpy
enthalpy-entropy correlation
Equilibrium
Gas separation
Indoor air quality
Infrared analysis
Infrared spectroscopy
IR spectroscopy
Nitrogen
nitrogen adsorption
Resistance thermometers
Spectrum analysis
Zeolites
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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 (Δ ⁰) and entropy (Δ ⁰) 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 Δ ⁰ and Δ ⁰. Implications of such a correlation for gas separation and purification by adsorption in porous solids are highlighted.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules23112978