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Sustainable process for adipic acid production from cyclohexene in microemulsion

Abstract : Adipic acid appears as an intermediate compound for the synthesis of polyamides and preferentially for the production of nylon-6,6 polyamide. It can be synthesized by the oxidation of cyclohexene by hydrogen peroxide in microemulsion media which has the main advantage to lead a better contact between the two phases thus increasing the yield of the reaction. The microemulsion is generated by stearyl dimethyl benzyl ammonium chloride (C18) as a surfactant avoiding the use of harmful organic solvents and phase-transfer catalysts. The reaction is performed under mild conditions (85 °C, 8 h) with sodium tungstate, - a no heavy metal catalyst - leading to the production of adipic acid in high yield (>80%). By recycling the catalyst and the surfactant, the process becomes truly green.
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Submitted on : Wednesday, December 2, 2020 - 8:55:47 AM
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Geoffroy Lesage, Isariebel Quesada-Peñate, Sophie Franceschi, Emile Pérez, Jean-Christophe Garrigues, et al.. Sustainable process for adipic acid production from cyclohexene in microemulsion. Catalysis Today, Elsevier, 2020, 346, pp.40-45. ⟨10.1016/j.cattod.2019.02.065⟩. ⟨hal-02341096⟩

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