Contribution to the development of sustainable synthesis of the adipic acid

Abstract

SSCI-VIDE+CDFA+LMH:NESNational audienceL.Mouheba, b, c, N. Essayemc, L. Dermechea, b et C. Rabiab a : Département de Chimie, Facultés des Sciences, Université Mouloud Mammeri, Tizi-Ouzou, Algérie.b : Laboratoire de Chimie du Gaz Naturel, Faculté de Chimie, USTHB, BP32, El-Alia, 16111Bab-Ezzouar, Alger, Algérie.c : Institut de recherche sur la catalyse et l’environnement, CNRS 2 Avenue Albert Einstein, 69100 Villeurbanne, Lyon, France.E-mail : [email protected] order to minimize the negative chemical impact on the environment, the efforts were gathered for the valorization of renewable resources and in the search of a more ecological and economic synthesis processes.In the current chemical industry, adipic acid, an important precursor in the nylon production, is obtained from oxidation of a mixture of cyclohexanone and cyclohexanol by nitric acid [1, 2]. However, the nitric acid reduction leads to nitrogen oxides gases as by-products. Among them, N2O is produced, contributing to global warming and ozone depletion [3, 4]. The challenge is to find a cleaner method of AA synthesis [5].In this context, the purpose of our work is to develop a sustainable catalytic synthesis of adipic acid, based on the use of a greener oxidant, H2O2 and POM as catalysts .The best yield of adipic acid, 59%, was obtained with H1Sn1PMo12; this chemical composition provides an acidic centers necessary for required cleavage of the C-C bond of the substrate as well as a oxidizing sites favoring the formation of AA with the oxidation of terminal carbons. Bifunctional POM, with acid and redox sites, appear as catalytic systems of high potential which might substitute the use of nitric acid oxidant in the AA synthesis. These results are very promising and emphasize our contribution to the development of a way for sustainable synthesis of adipic acid, using POM catalyst and H2O2 as green oxidant.References[1] AF. Lindsay, Nitric acid oxidation design in the manufacture of adipic acid from cyclohexanol and cyclohexanone, Spec Suppl Chem Eng Sci. 1954, (8), 78.[2] A. Castellan, JCJ. Bart and S. Cavallaro, Nitric acid reaction of cyclohexanol to adipic acid, Catal Today. 1991, (9), 255.[3] van Duren and al. Biotechnology and bioengineering, 2011, (108) 1298-1306. [4] Polen and al. Journal of Biotechnology, 2013, (167), 75-84.[5] K. Nomiya, M. Miwa, Y. Sugaya, Catalysis by heteropolyacid-VII. Catalytic oxidation of cyclohexanol by dodecamolybdate, Polyhedron, 1984, (3), 607-610