Dresden 2006 – wissenschaftliches Programm
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O: Oberflächenphysik
O 14: Poster session I (Adsorption, Epitaxy and growth, Phase transitions, Surface reactions, Organic films, Electronic structure, Methods) (sponsored by Omicron Nanotechnology GmbH)
O 14.21: Poster
Montag, 27. März 2006, 18:00–21:00, P2
Hydrogen adsorption on carbon nanoparticles at low temperatures — •Melanie Hentsche1, Helmut Hermann1, Klaus Wetzig1, and Gotthard Seifert2 — 1IFW Dresden, P.O.Box 27 01 16, D-01171 Dresden — 2TU Dresden, Institute for Physical Chemistry and Electrochemistry, Bergstr. 66b, D-01062 Dresden
Carbon powders with particle size on the nanometre scale are prepared by high energy ball milling. The hydrogen adsorption properties of these materials are investigated in the temperature and pressure range of 40 K to 300 K and 1 Bar to 200 Bar, respectively. The experimental data suggest that the adsorption capacity depends not only on the specific surface area of the powders but also on the morphology of the surfaces. It is also shown that the microstructure of the carbon powders can be modified by changing the preparation conditions including milling under different atmospheres and at low temperatures.