h1

%0 Thesis
%A Haus, Moritz Otto
%T N-Vinyl-2-Pyrrolidonmonomere auf Basis biogener Carbonsäuren : Design heterogener Katalysatoren und Prozessbewertung
%I RWTH Aachen University
%V Dissertation
%C Aachen
%M RWTH-2022-00749
%P 1 Online-Ressource : Illustrationen
%D 2021
%Z Veröffentlicht auf dem Publikationsserver der RWTH Aachen University 2022
%Z Dissertation, RWTH Aachen University, 2021
%X The utilization of biomass in chemical production continues to attract scientific, political, and corporate attention due to its potential for sustainable development – most notably regarding CO2 emissions. However, as of today, an integrated network of biomass-based conversion technologies, which could mimic and rival the petrochemical sector, remains under construction. Thus, the search for enabling catalytic materials and effective value chains remains an acute topic of chemical research. In this context, detailed evaluations of the projected economic and environmental impacts associated with bio-based production have also gained traction. They serve as motivation for decision-makers in politics and industry, whilst also highlighting the critical trade-offs in biomass cultivation forchemical applications. Within this broader context, the thesis at hand discusses a two-step value chain from chosen, biomass-based platform chemicals – dicarboxylic acids, such as succinic acid – to N-vinyl-2-pyrrolidone (NVP) monomers. The process starts by converting the acid substrate with monoethanolamine and hydrogen in an aqueous environment to generate an N-(2-hydroxyethyl)-2-pyrrolidone intermediate. The latter undergoes subsequent gas-phase dehydration to NVP so that water appears as sole by-product in an idealized scenario. Together with the use of recyclable, heterogeneous catalysts in both stages, this allows for an efficient access to high-value, nitrogen-containing monomers starting from biomass. First, chapter 5.1 serves as an overview of the entire two-stage conversion, which includes the underlying reaction networks, the performance of commercial catalysts and the influence of reaction conditions. Based on the presented results, ruthenium on carbon (Ru/C, 5 wt. 
%F PUB:(DE-HGF)11
%9 Dissertation / PhD Thesis
%R 10.18154/RWTH-2022-00749
%U https://publications.rwth-aachen.de/record/838773