Green process for adipic acid synthesis: oxidation by hydrogen peroxide in water micromelusions using Benzalkonium Chloride C12-14 surfactantReport as inadecuate




Green process for adipic acid synthesis: oxidation by hydrogen peroxide in water micromelusions using Benzalkonium Chloride C12-14 surfactant - Download this document for free, or read online. Document in PDF available to download.

1 LGC - Laboratoire de génie chimique

Abstract : Adipic acid was synthesized by the oxidation of cyclohexene using 30% hydrogen peroxide in a microemulsion in the presence of sodium tungstate as catalyst. The proposed green process is environmentally friendly since catalyst and surfactant are recycled and pure adipic acid is produced in high yield 70% to 79%. Microemulsions are used as a -green solvent- and give a better contact between the phases. Alkyldimethylbenzylammonium chloride C12-C14 was used as a surfactant for the generation of the microemulsion since it enables the use of harmful organic solvents and phase-transfer catalysts to be avoided. Optimised operating conditions temperature, reaction time, separation process have been defined and applied to evaluate the industrial practicability. The main interest of the present work is the easy recovery of pure adipic acid and the reuse of the reaction media surfactant and catalyst. This shows promise for developing a future green industrial process that will enable greenhouse gas emissions N2O, among others, to be reduced.

Keywords : Adipic acid Hydrogen peroxide Microemulsion Green oxidation Sustainable chemistry





Author: Geoffroy Lesage - Isariebel Quesada Peñate - Patrick Cognet - Martine Poux -

Source: https://hal.archives-ouvertes.fr/



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