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Updated: Dec 20, 2025

Adsorption Device Based on a Langatate Crystal Microbalance for High Temperature High Pressure Gas Adsorption in Zeolite H-ZSM-5
Published on: August 25, 2016
Molar Entropy and Enthalpy of CO Adsorbed in Zeolites as Derived from VTIR Data: Role of Intermolecular Modes
Edoardo Garrone1, Carlos Otero Areán2, Montserrat Rodríguez Delgado2
1Department of Applied Science and Technology and INSTM Unit of Torino Politecnico Politecnico di Torino Corso Duca degli Abruzzi, 24 10129 Torino Italy.
Abstract:
Detailed analysis of recently reported variable-temperature IR (VTIR) spectra of carbon monoxide adsorbed in alkaline zeolites shows how, not only the corresponding values of standard adsorption enthalpy ( ) and entropy ( ) can be obtained, but also the thermodynamic values of molar entropy and enthalpy which characterize the adsorbed gas phase. In addition, it is shown that the so obtained molar entropy data can lead to new insights into soft molecular modes, which would be hardly accessible by conventional IR spectroscopic techniques.
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