Conversion of Cyclohexanone to Adipic Acid Catalyzed by Heteropoly Compounds

Aldes Lesbani (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Jl. Raya Palembang Prabumulih Km32, Ogan Ilir Sumatera Selatan 30662)
Fitriliana Fitriliana (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Jl. Raya Palembang Prabumulih Km32, Ogan Ilir Sumatera Selatan 30662)
Risfidian Mohadi (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, Jl. Raya Palembang Prabumulih Km32, Ogan Ilir Sumatera Selatan 30662)

Indonesian Journal of Chemistry
Vol 15, No 1 (2015)

Conversion of cyclohexanone to adipic acid using hydrogen peroxide as green oxidant catalyzed by heteropoly compounds i.e. H5[a-BW12O40] H4[a-SiW12O40] and H4[a-PVMo11O40] has been carried out systematically in one pot synthesis under mild condition. The product of adipic acid was characterized using GC-MS, FT-IR, 1H-NMR and 13C-NMR spectroscopy. The results show that cyclohexanone could be converted into adipic acid by using H5[a-BW12O40] H4[a-SiW12O40] as catalysts, whereas H4[a-PVMo11O40] did not shows catalytic activity in this reaction. The effect of reaction time gave adipic acid 41% for reaction time 7 h. The yield of adipic acid was 30% with melting point 149-151 °C. The oxidation temperature at 100 °C gave the highest adipic acid 48% was obtained. The FT-IR, 1H-NMR and 13C-NMR spectra of the product are well agreed to the adipic acid standard.