Kai Volgmann

TL;DR: Permeation measurements under a direct-current E-field poling of 500 volts per millimeter showed reversibly controlled switching of the ZIF-8 into polar polymorphs, which was confirmed by x-ray diffraction and ab initio calculations, and a defibrillation of the different lattice motions.

TL;DR: In this article, three different carbon membranes are investigated with respect to their performance to extract hydrogen selectively from the binary and ternary reaction mixtures (H2/CO2), (H 2/CO 2/H2O) as model systems for bio-ethanol steam reforming.

TL;DR: Permeation measurements and nitrogen sorption measurements indicate that the 2-site 180° flips of the aromatic ring are hindered by the presence of the surrounding polymer Matrimid and residual solvent molecules, thus giving profound insights into the molecular understanding of gas transport through metal-organic framework-based MMMs.

TL;DR: In this article, the authors present some recent systematic relaxometry case studies using model systems that exhibit spatially restricted Li ion diffusion and compare their results with data from other techniques as well as current relaxation models developed for 2D and 1D diffusion.

TL;DR: In this paper, the authors used solid-state nuclear magnetic resonance (NMR) spectroscopy for the first time to reveal the cation dynamics in layered Na2Ti3O7 and Li2Ti2O7.