T Alexander Riemer

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The cost- and material-efficient development of next-generation catalysts would benefit greatly from a molecular-level understanding of the interaction between reagents and catalysts in chemical conversion processes. Here, we trace the conversion of alkene and glycol in single zeolite catalyst particles with unprecedented chemical and spatial resolution.(More)
Static 1H NMR spectra of hydrous NaAlSi3O8 glasses have been acquired at low temperature (140 K) in order to quantitatively determine OH and H2O concentrations. Since both components overlap in the spectra, an unambiguous determination of the line shapes is required. The structurally bonded hydroxyl groups are well described by a Gaussian line and the water(More)
Abrupte änderungen des Verlaufs von Jahresringzeitreihen werden im Zusammenhang mit den “neuartigen Waldschäden” in der Literatur widersprüchlich diskutiert. Mit verschiedenen Methoden wurden eigene Jahresringanalysen an Fichten und buchen von Standorten entlang eines geographischen Höhengradienten vor allem in Südniedersachsen und Nordhessen durchgeführt.(More)
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