Self-diffusion coefficients give insight into the mobility of molecular species and serve as benchmark variables for molecular modeling. Nuclear magnetic resonance (NMR) spectroscopy is an excellent method for the measurement of self-diffusion coefficients: In the present work, a pulsed gradient stimulated echo (PGSTE) pulse sequence was employed for their determination in binary and ternary liquid systems at 298 K and 1 bar. To ensure a high quality of the measurements, a preliminary gradient mapping was carried out. The experimental results are compared to molecular simulation data by Guevara-Carrion et al. [1] for binary systems (acetone/toluene, acetone/ethanol and acetone/cyclohexane) and to molecular simulation data that was determined in the present work for the ternary system acetone/toluene/cyclohexane.

α-Al2O3 is an important refractory material which has numerous technical applications: as an in situ growing self-healing oxide scale, as a massive material and as reinforcement fibres in composites. For modelling diffusion controlled processes (creep, sintering, alpha-alumina scale growth on aluminium bearing Fe or Ni base alloys) it is necessary to study self-diffusion of the constituent elements.