dc.rights.license | CC-BY-NC-ND | |
dc.contributor.advisor | Ruiz-Martínez, J. | |
dc.contributor.advisor | Weckhuysen, B.M. | |
dc.contributor.author | Goetze, J.G. | |
dc.date.accessioned | 2013-06-06T17:00:57Z | |
dc.date.available | 2013-06-06 | |
dc.date.available | 2013-06-06T17:00:57Z | |
dc.date.issued | 2013 | |
dc.identifier.uri | https://studenttheses.uu.nl/handle/20.500.12932/13060 | |
dc.description.abstract | The formation of coke on individual Fluid Catalytic Cracking (FCC) catalyst particles was studied using UV/Vis microspectroscopy and confocal fluorescence microscopy, with n-hexane cracking as a model reaction. Bulk information was obtained with thermogravimetric analysis (TGA) and elemental analysis. To study the effect of metal poisons, four different catalyst particles were used: fresh particles and three kinds of deactivated particles, of which two had been treated with metal poisons (Ni, V). The microscopic measurements were performed using a specially designed quartz cell, which enabled studying individual FCC particles during hexane cracking. UV/Vis absorbance was found to be linearly related to the concentration of coke in the catalyst particles determined with TGA. The coke concentration was approximately 3 times higher for the particles deactivated with metal compounds than for the fresh particles after 2 hours of cracking. The UV/Vis data were fitted with a simplified kinetic model, which was able to explain the observed differences in UV/Vis absorbance between the different particles based on their deactivation treatments. Confocal fluorescence microscopy revealed the location of coke molecules within individual FCC particles. | |
dc.description.sponsorship | Utrecht University | |
dc.language.iso | en | |
dc.title | Spectroscopic studies on the formation of coke on individual Fluid Catalytic Cracking particles: the effect of poisoning metal compounds | |
dc.type.content | Master Thesis | |
dc.rights.accessrights | Open Access | |
dc.subject.keywords | Fluid Catalytic Cracking, FCC, hexane, coke, coke formation, confocal fluorescence microscopy, catalysis | |
dc.subject.courseuu | Nanomaterials: Chemistry and Physics | |