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As Switzerland and the rest of the world searches for alternatives to fossil fuels, biomass offers an attractive source for renewable fuels and chemicals. This is especially the case for fossil-based products that cannot be easily substituted with alternatives such as renewable electricity including specialty fuels (aviation, trucking, etc.) or carbon based commodity chemicals (e.g. alpha-olefins). In this context, mixtures of carboxylic acids can be produced from the fermentation of biomass-derived sugars and, because of their functionality, represent an attractive target for catalytic upgrading. The literature reveals that certain individual carboxylic acids can be decarboxylated, ketonized and hydrodeoxygenated to produce alkanes. However, there has been no systematic study of carboxylic acids across different catalytic systems. Furthermore, the effect of using different carboxylic acid mixtures, which are the typical results of mixed-culture fermentation to carboxylic acids, has not been studied and offers the possibility of a coordinated optimization of biological and catalytic processes to target tailored fuel mixtures. Finally, oxidative decarboxylation of carboxylic acids to produce alkenes, specifically valuable linear alpha-alkenes (linear alpha-olefins) has been demonstrated through homogeneous catalysis but has not been studied using more industrially relevant heterogeneous catalysis systems. The goal of this project is to produce targeted biomass-derived alkanes and alpha-olefins by catalytic decarboxylation or ketonization of biomass-derived carboxylic acid mixtures. If successful, it would provide a technology with unmatched tailoring capabilities compared to other biomass conversion processes and allow for direct use of our products at minimal adaptation costs.