Dresden 2011 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 31: Postersitzung II
MM 31.37: Poster
Wednesday, March 16, 2011, 17:15–18:45, P5
Pore lattice deformation of silica nanochannels (SBA-15) during uptake and release of solid and liquid argon — •Daniel Rau1, Dirk Wallacher2, Gerald Zickler3, Patrick Huber1, and Rolf Pelster1 — 1FR 7.2 Experimentalphysik, Universität des Saarlandes, Germany — 2Helmholtz Zentrum Berlin, Germany — 3Department of Physical Metallurgy and Materials Testing, Montanuniversität / University of Leoben, Austria
We have studied the structural change of cylindrical, hexagonally ordered silica nanopores (SBA-15) as a function of their filling with solid and liquid argon, respectively. Sorption isotherms were measured at 71.5 K (solid) and 81.5 K (liquid). Simultaneously the material was characterized via small-angle-X-ray-scattering (SAXS) using synchrotron radiation at the Hasylab (DESY/Hamburg). In this way we are able to evaluate the deformation of the pore lattice during adsorption and desorption.