Raphaela Süss
Johannes Kepler University of Linz
3 Papers
Raphaela Süss is an academic researcher from Johannes Kepler University of Linz. The author has contributed to research in topics: Catalysis & Organosolv. The author has co-authored 3 publications.
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Papers
Homogeneously catalyzed depolymerization of lignin from organosolv medium: Characterization, optimization, and minimization of coke formation
Abstract: Funding information European Regional Development Fund (EFRE) Abstract This study focused on maximizing yields of oligomeric and monomeric products while minimizing coke formation in the depolymerization of lignin from an organosolv medium. A design of experiments (DoE) with temperature, time, and ethanol-water ratio as factors was established and tested. Optimized reaction conditions were found at 185.4 C with 7.5 wt% sodium hydroxide as catalyst, an ethanol-water ratio of 48.6% (v/v), and a residence time of 30 minutes. With these optimized parameters, maximum monomer and oligomer yields of 9.4 wt% and 86.2 wt% and minimized coke formation of 0.5 wt% were achieved. The oligomeric and monomeric products were characterized by GPC, GC-MS, and OH-group determination (Folin-Ciocalteu).
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Quantifizierungsmethoden für die Produktion von PHB mittels Halomonas halophila
TL;DR: The quantification of polyhydroxybutyrate (PHB) in biomass of Halomonas halophila was compared using different methods (TGA,GC-FID, GC-MS, HPLC); the determined PHB contents were similar in all applied methods.
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