Dependence of Hydrogen Adsorption on the Structural Properties of Carbons

International Congress on Energy (ICE)
AIChE Annual Meeting
October 30, 2012 - 12:30pm-12:55pm
Dependence of Hydrogen Adsorption on the Structural Properties of Carbon; Deviation from Graphite: Good or Bad?

Ali Qajar, Maryam Peer, Ramakrishnan Rajagopalan, Henry C Foley


                Adsorption of hydrogen on a series of carbons with different structural properties is studied. PFA-derived carbon is selected as a carbon with high deviation from graphite. Also, graphene and graphite are synthesized and used to cover the other side of the structural spectra representing highly ordered carbons. Ion intercalation into the PFA-derived carbons and changing d-spacing between graphene layers was used to mimic the graphitic structures. The adsorption properties of the carbons composed of both edge sites and interlayer spacing is evaluated by hydrogen adsorption at room temperature and 100 bar. Adsorption equilibrium strongly depends on the graphitic structure of the carbon. Pt nano-particles were impregnated on the adsorbents. The effect of the hetero-junction between Pt nao-particles and carbon surface reveals strong dependence on the type of the carbon. The effect of addition of functional groups is also studied by collecting adsorption data and TGA and IR analysis.

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