Reif, Phillip (2023)
Sustainable Production of Aromatics by Catalytic Aldol Condensation of Biomass-Derived Ketones.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00026330
Ph.D. Thesis, Primary publication, Publisher's Version
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2023-11-15 Dissertation Phillip Reif TUprints.pdf Copyright Information: CC BY-NC-ND 4.0 International - Creative Commons, Attribution NonCommercial, NoDerivs. Download (18MB) |
Item Type: | Ph.D. Thesis | ||||
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Type of entry: | Primary publication | ||||
Title: | Sustainable Production of Aromatics by Catalytic Aldol Condensation of Biomass-Derived Ketones | ||||
Language: | English | ||||
Referees: | Rose, Prof. Dr. Marcus ; Busch, Prof. Dr. Markus | ||||
Date: | 4 December 2023 | ||||
Place of Publication: | Darmstadt | ||||
Collation: | ix, 103 Seiten | ||||
Date of oral examination: | 13 November 2023 | ||||
DOI: | 10.26083/tuprints-00026330 | ||||
Abstract: | Achieving carbon neutrality and establishing a circular bioeconomy are major challenges of our time. Currently, polymers are predominantly derived from fossil resources. However, increasing demands for their sustainable production require the exploration of alternative pathways based on renewable biomass. For many monomers, aromatics are key precursors, but the large-scale production from biomass remains limited. Catalytic self-aldol condensation of biomass-derived alkyl methyl ketones over solid acid catalysts to aromatics is a promising, less explored pathway. The one-step reaction requires neither hydrogen nor precious metal catalysts. In this study, the aromatization of the model compound acetone was initially investigated under solvent-free batch and continuous flow conditions over commercially available catalysts. The goal was to identify acid catalysts with superior stability and activity and to elucidate structure-activity relationships. The most active catalyst under batch conditions proved to be unstable in the continuous flow reactor. Conversely, larger pore silica-alumina catalysts were observed to provide stable aromatization activity under flow conditions. Very high stability (> 50 h time-on-stream) combined with significant activity was found for the amorphous silica-alumina Siralox 30. The catalyst was also suitable for the aromatization of 2-butanone. Increased space-time-yield and energy-efficient product separation are feasible through solvent-free reaction conditions. Overcoming the challenges associated with catalyst deactivation represents a significant step toward the potential scale-up of the alkyl methyl ketone route and contributes to the transition to a fossil-free, renewable chemical industry. |
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Uncontrolled Keywords: | Biomasse, Aromaten, Katalyse, Katalysatorstabilität, Rohrreaktor | ||||
Status: | Publisher's Version | ||||
URN: | urn:nbn:de:tuda-tuprints-263309 | ||||
Classification DDC: | 600 Technology, medicine, applied sciences > 660 Chemical engineering | ||||
Divisions: | 07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Technische Chemie > Technische Chemie II | ||||
TU-Projects: | PTJ|031B0680|BioAromatics | ||||
Date Deposited: | 04 Dec 2023 13:04 | ||||
Last Modified: | 05 Dec 2023 07:44 | ||||
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/26330 | ||||
PPN: | 513646558 | ||||
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