Issue 20, 2005

Ferreting out gas adsorption heats: the pseudo-isobaric method

Abstract

A new method is demonstrated for calculating gas adsorption heats from variable-temperature infrared spectra of adsorbed molecules. By focusing on the low coverage regime, where (at equilibrium) there is only a very small fraction of molecules adsorbed, the procedure devised yields the corresponding value of adsorption enthalpy without needing to know the equilibrium pressure. Experimental measurements can thus be highly simplified, which constitutes one of the merits of the new method. Versatility for dealing with adsorption processes occurring at a low temperature, and having a small energy balance, is another favourable feature.

Graphical abstract: Ferreting out gas adsorption heats: the pseudo-isobaric method

Article information

Article type
Communication
Submitted
21 Jul 2005
Accepted
23 Aug 2005
First published
05 Sep 2005

Phys. Chem. Chem. Phys., 2005,7, 3519-3522

Ferreting out gas adsorption heats: the pseudo-isobaric method

E. Garrone, M. Rodríguez Delgado, B. Bonelli and C. Otero Areán, Phys. Chem. Chem. Phys., 2005, 7, 3519 DOI: 10.1039/B510375D

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