Transformation of biomass derivatives in aqueous medium: Oxidation of ethanol from sugarcane and acetol from biodiesel glycerol catalyzed by Fe3+- H2O2
作者： Marcos Lopes de Araújo , Gilvan Aguiar Correia , Wagner Alves Carvalho , Lidia Sergeevna Shul’pina , Yuriy Nikitovich Kozlov
DOI: 10.1016/J.MCAT.2020.111307
关键词: Formic acid 、 Biomass 、 Biodiesel 、 Acetic acid 、 Chemistry 、 Catalysis 、 Organic chemistry 、 Radical 、 Glycerol 、 Ethanol
摘要: Abstract Ethanol obtained from sugarcane is an interesting biomass feedstock that widely used as fuel and additive. Another relevant acetol glycerol, the major byproduct of biodiesel manufacturing. were oxidized by Fe(ClO4)3-HClO4-H2O2 system in water at 60 °C with full conversions. (0.1 M) oxidation yielded 0.058 M formic acid (HFO) 0.085 M acetic (HAC), whereas provided 0.059 M HFO 0.1 M HAC. On basis kinetic studies, these feedstocks followed different mechanisms. a chain mechanism induced hydroxyl radicals generated during catalytic decomposition H2O2 Fe3+. Acetol oxidation, on other hand, non-chain process which complex formed between (as substrate) catalyst played decisive role, interaction this was limiting stage. The activation energies for ethanol 24.1 14.8 kcal/mol, respectively.
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