Pantoja, Christian F.Muñoz-Muñoz, Y. MauricioGuastar, LorraineVrabec, JadranWist, Julien2019-04-112019-04-112018-10-161463-9076https://depositonce.tu-berlin.de/handle/11303/9320http://dx.doi.org/10.14279/depositonce-8393Nuclear magnetic resonance (NMR) spectroscopy is a well-established technique for the measurement of intra-diffusion coefficients. Recently, such information has been used as a basis of predictive models to extrapolate to the Fick diffusion coefficient of liquid mixtures. The present work presents a new approach to directly access the Fick diffusion coefficient by spatially resolved NMR experiments. The Fick diffusion coefficient of the binary mixture TEA/H2O was determined at two temperatures, 283.2 K and 275.2 K. The results are consistent with values previously reported either from optical experiments or predictive Darken-type models developed for this system. The proposed methodology adds high-resolution NMR to the toolbox for the study of the transport diffusion of multicomponent mixtures. It is, however, still limited to mixtures with liquid–liquid equilibrium phase separation.en540 Chemie und zugeordnete Wissenschaften530 PhysikArticle1463-9084