Minisymposium and PhD Defence
Minisymposium – 9:30 to 11:30
HCØ, C-115
(Talks by the PhD Evaluation Committee members and guests)From atoms to crystals – or how a particle is born!
Liane G. Benning, Professor, School of Earth and Environment, University of Leeds, UKIn situ techniques in heterogeneous catalysis
Alfons M. Molenbroek, Dr. Ir., General Manager, Physical Analytical Department, Topsøe, DKComputational Spectroscopy: From gamma rays to radio frequencies
Stephan Sauer, Associate Professor, Department of Chemistry, University of Copenhagen, DKComplexation and precipitation reactions in aqueous Cu(II)-As(V) solutions
Staffan Sjøberg, Professor, Department of Chemistry, University of Umeå, SEPhD Defence – 14:15 and following
Auditorium 2
Molecular interactions at chalk particle surfaces
Lone Skovbjerg, cand. scient., NanoGeoScience Group, Nano-Science Center, Department of Chemistry, University of Copenhagen
Abstract
High resolution atomic force microscopy shows that chalk particle surfaces are partly covered with clay only one or a few molecular layers thick (1-4 nm). The clay nanoparticles interact more strongly with organic molecules than the biogenic calcite that comprises most of the rock. The clay has implications for how oil is retained in chalk reservoirs and how organic contaminants are transported in chalk aquifers.