Electrochemical Valorization of Coconut Oil-Derived Fatty Acids: Toward a Sustainable Alternative for Fuel Additives

The search for sustainable energy sources drives research in biomass conversion. This study investigates the electrochemical decarboxylation of fatty acids from coconut oil through the Non-Kolbe reaction, evaluating solvents, electrolytes, and applied voltage. Methanol achieved 100% conversion of substrate to product, while water and nonpolar solvents exhibited low reactivity. Inorganic bases like KOH, NaOH, and NaHCO₃ were more effective than organic bases. High potentials (>10 V) favored oxygenated products, whereas moderate potentials (8-10 V) enhanced the production of linear α-olefins, such as 1-undecene and 1-tridecene. Results demonstrate that the electrosynthesis of fuel additives from fatty acids can offer a sustainable alternative to conventional thermochemical processes. The selective control of products via voltage and electrolyte/solvent choice presents a promising route for efficient and sustainable fuel additive production. This method requires lower energy input than conventional thermochemical routes, providing a more energy-efficient pathway for biomass valorization.