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Methane preconcentration by adsorption: a methodology for materials and conditions selection

Eyer, Simon ; Stadie, Nicholas ; Borgschulte, Andreas ; Emmenegger, Lukas ; Mohn, Joachim

In: Adsorption, 2014, vol. 20, no. 5-6, p. 657-666

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    Titre
    • Methane preconcentration by adsorption: a methodology for materials and conditions selection
    Auteur
    • Eyer, Simon. Empa, Laboratory for Air Pollution & Environmental Technology, Überlandstrasse 129, 8600, Dübendorf, Switzerland
    • Stadie, Nicholas. Empa, Laboratory for Hydrogen & Energy, Überlandstrasse 129, 8600, Dübendorf, Switzerland
    • Borgschulte, Andreas. Empa, Laboratory for Hydrogen & Energy, Überlandstrasse 129, 8600, Dübendorf, Switzerland
    • Emmenegger, Lukas. Empa, Laboratory for Air Pollution & Environmental Technology, Überlandstrasse 129, 8600, Dübendorf, Switzerland
    • Mohn, Joachim. Empa, Laboratory for Air Pollution & Environmental Technology, Überlandstrasse 129, 8600, Dübendorf, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Adsorption, 2014, vol. 20, no. 5-6, p. 657-666. Springer US; http://www.springer-ny.com
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:324974
    Summary
    Methane (CH $$_4$$ 4 ) adsorption has been widely studied, mainly in the context of natural gas purification. A much less prominent, but highly relevant application is the preconcentration of CH $$_4$$ 4 from ambient air. In this study, we compare six different commercial adsorbent materials with respect to their effectiveness for methane preconcentration: a macroporous polymeric resin (HayeSep D), multi-walled carbon nanotubes, two microporous metal-organic frameworks (HKUST-1 and ZIF-8), and two zeolites (5A and 13X). The most relevant properties, such as isosteric enthalpy of adsorption, specific surface area and the selectivity for CH $$_4$$ 4 adsorption over N $$_2$$ 2 were characterized by analyzing adsorption/desorption isotherms. Using these parameters, we discuss the tested adsorbents with respect to the most important properties and identify the most promising candidates. Furthermore we identify the experimental conditions that are expected to give the best results with respect to practical applications.