Uma nova rota para a produção de combustíveis a partir de ácidos graxos: decomposição térmica de oleatos de Li, Na e K

Abstract

In this work is a new route that combines fatty acids with alkali metal hydroxides to form carboxylic intermediates that are thermally decomposed to form combustible hydrocarbons. Materials were prepared from the reaction of alkali metal hydroxide (NaOH,LiOH and KOH) with oleic acids (AO) in different molar proportions followed by thermal decomposition that produced three fractions: solid, liquid and gas. Analysis of the net fraction by IV, UV-Vis, CG-MS, NMR and CHN, a sample of a complex compound mixture containing aromatic compounds, ketones and aldehydes. The gas fraction showedremarkable selectivity for propane with a little C1, C2, C4, H2 and COX. The characterization of the solid products by XRD, Raman spectroscopy, TG, MET, MEV and CHN showed a presence of carbonates, oxides and carbon. The treatment at 900 °C led to the decomposition of carbonate to CO2 which oxidizes the carbon to CO and regenerating the alkali metal hydroxide, which can potentially be used for a new reactioncycle.