title: Oxidative decarboxylation of levulinic acid by silver(I)/persulfate.
abstract: The oxidative decarboxylation of levulinic acid (LA) by silver(I)/persulfate [Ag(I)/S₂O₈²⁻] has been investigated in this paper. The effects of buffer solution, initial pH value, time and temperature and dosages of Ag(I)/S₂O₈²⁻ on the decarboxylation of LA were examined in batch experiments and a reaction scheme was proposed on basis of the reaction process. The experimental results showed that a solution of NaOH-KH₂PO₄ was comparatively suitable for the LA decarboxylation reaction by silver(I)/persulfate. Under optimum conditions (temperature 160 °C, pH 5.0, and time 0.5 h), the rate of LA conversion in NaOH-KH₂PO₄ solutions with an initial concentration of 0.01 mol LA reached 70.2%, 2-butanone (methyl ethyl ketone) was the single product in the gas phase and the resulted molar yield reached 44.2%.
authors: Department of Resources Science and Engineering, State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
authors: Yan
authors: Y
authors: Gong
authors: Lu
authors: L
authors: Lin
mesh_terms: D002264:Carboxylic Acids / Q000737:chemistry*; D006801:Humans; D007982:Levulinic Acids / Q000737:chemistry*; D010084:Oxidation-Reduction; D012834:Silver / Q000737:chemistry*; D013464:Sulfuric Acids / Q000737:chemistry*
chemical_list: D002264:Carboxylic Acids; D007982:Levulinic Acids; D013464:Sulfuric Acids; D012834:Silver; C032246:levulinic acid