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Rosario Hernández-Huesca ; Gelacio Aguilar-Armenta ;Journal of the Mexican Chemical Society 2010, 54 (2)

Autor: Gerardo Domínguez

Fuente: http://www.redalyc.org/


Introducción



Journal of the Mexican Chemical Society ISSN: 1870-249X editor.jmcs@gmail.com Sociedad Química de México México Domínguez, Gerardo; Hernández-Huesca, Rosario; Aguilar-Armenta, Gelacio Isosteric Heats of Adsorption of N2O and NO on Natural Zeolites Journal of the Mexican Chemical Society, vol.
54, núm.
2, abril-junio, 2010, pp.
111-116 Sociedad Química de México Distrito Federal, México Available in: http:--www.redalyc.org-articulo.oa?id=47519864008 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Article J.
Mex.
Chem.
Soc.
2010, 54(2), 111-116 © 2010, Sociedad Química de México ISSN 1870-249X Isosteric Heats of Adsorption of N2O and NO on Natural Zeolites Gerardo Domínguez, Rosario Hernández-Huesca,* and Gelacio Aguilar-Armenta Centro de Investigación de la Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Blvd.
14 sur y Av. San Claudio, Ciudad Universitaria, C.P.
72570, Puebla, Pue.
México, rosario.hernandez@fcquim.buap.mx Received November 24, 2009; accepted May 25, 2010 Abstract.
We studied the capacities of three natural zeolites to adsorb N2O or NO using a glass high-vacuum volumetric system that permitted characterization of the energetics of the adsorption process.
Adsorption equilibrium data were analyzed using the classical Freundlich equation and the Dual–Langmuir model.
We employed the Clausius–Clapeyron relationship to calculate the isosteric heats of adsorption using the equilibrium data of the isotherms measured at 273.15 K and 293.15 K.
The isosteric heats of reversible adsorption of both gases were smaller than the heats of total adsorption.
The interaction energy of N2O with mordenite was larger than the interaction energies of N2O with either erionite or clinoptil...





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