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%0 Thesis %A Metten, Matthias %T Analysis of carbon formation characteristics of real CPOX-reformate from diesel fuel on SOFC-anodes; Erste Auflage %I RWTH Aachen University %V Dissertation %C Bottrop %M RWTH-2020-01204 %@ 978-3-96463-008-7 %P 1 Online-Ressource (x, 157 Seiten) : Illustrationen, Diagramme %D 2019 %Z Druckausgabe: 2019. - Auch veröffentlicht auf dem Publikationsserver der RWTH Aachen University 2020. - Version enhält eine falsche ISBN, korrekte Version als 2. Titelaufnahme verfügbar. %Z Dissertation, RWTH Aachen University, 2019 %X This doctoral thesis is about the carbon formation of real diesel-synthesis gas from catalytic partial oxidation within solid oxide fuel cells (SOFC). It is based on previous work within the project ENSA which was funded by the Federal Ministry for Economic Affairs and Energy under the reference numbers 0327703 A- C, 0327823A-C, 03ET2048A-C. In this project it was the target to develop a mobile auxiliary power unit (APU) which uses diesel to produce electricity for a truck. The diesel is mixed with anode off-gas from the SOFC and air before it reacts in a catalytic partial oxidation (CPOX). The product is a H2 and CO-rich synthesis gas. This reformate is finally oxidised in the SOFC while providing electrical power. Since for economic reasons it is aimed at decreasing the maximum operating temperature of the SOFC it is necessary to analyse the increasing risk of carbon formation. In this work experiments with anode samples of the SOFC and state of the art models are presented. In the experiments the anode samples are exposed to real reformat at different temperatures and operating points of the system for 24 h. Subsequent, the weight gain of the samples was measured as an indicator of carbon formation. The porosity was determined and finally a part of the samples was inspected via Energy-dispersive X-ray spectroscopy (EDX). For the simulation of the deposition of carbon first a model was developed to simulate the composition of the reformate which was validated against measurements. Empiric models are presented that allow a valid prediction of the composition based on the main controlling parameters of the APU. Second, equilibrium, empiric, and kinetic based models are presented that consider carbon as graphite, carbon nano fibres, one atomic layers or pyrolytic carbon based on the reformate composition. Finally, the results of the models and the measurements are compared and the influence of the main controlling parameters is analysed. The result of the investigation shows that the model design is moving into the right direction. However, the prediction of carbon formation with present models is still improvable. %F PUB:(DE-HGF)11 ; PUB:(DE-HGF)3 %9 Dissertation / PhD ThesisBook %R 10.18154/RWTH-2020-01204 %U https://publications.rwth-aachen.de/record/781285