Production of Adipic Acid from Mixtures of Cyclohexanol-Cyclohexanone using Polyoxometalate Catalysts

Aldes, Lesbani and Sumiati, Sumiati and Mardiyanto, Mardiyanto and Annuria, Fithri Najma and Risfidian, Mohadi (2015) Production of Adipic Acid from Mixtures of Cyclohexanol-Cyclohexanone using Polyoxometalate Catalysts. Makara J. Sci., 19 (2). pp. 85-90. ISSN 2356-0851

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Abstract

Adipic acid production through catalytic conversion of cyclohexanol-cyclohexanone using polyoxometalate H5a-BW12O40 and H4a-SiW12O40 as catalysts was carried out systematically. Polyoxometalates H5a-BW12O40 and H4a-SiW12O40 were synthesized using an inorganic synthesis method and were characterized using Fourier transform infrared spectroscopy (FTIR). Adipic acid was formed from conversion of cyclohexanol-cyclohexanone and was characterized by using melting point measurement, identification of functional group using FTIR spectrophotometer, analysis of gas chromatography-mass spectrometry (GC-MS), and 1H and 13C NMR (nuclear magnetic resonance) spectrophotometer. This research investigated the influence of reaction time and temperature on the conversion. The results showed that adipic acid was formed successfully with a yield of 68\% by using H5a-BW12O40 as the catalyst with a melting point of 150-152 ?C after optimization. In contrast, using H4a-SiW12O40 as the catalyst, the formation was only 3.7\%. Investigation of time and temperature showed 9 h as the optimum reaction time and 90 ?C as the optimum temperature for conversion of up to 68\%. Identification using FTIR, 1H, and 13C NMR showed that the adipic acid from conversion of cyclohexanol-cyclohexanone was in agreement with the standard adipic acid data in the literatures. GC-MS analysis indicated that several by-products were formed in conversion of cyclohexanol-cyclohexanone using H5a-BW12O40 and H4a-SiW12O40 as the catalysts.

Item Type:	Article
Subjects:	Q Science > QD Chemistry > QD1-999 Chemistry
Depositing User:	backup admin
Date Deposited:	28 Jan 2020 09:24
Last Modified:	28 Jan 2020 09:24
URI:	http://repository.unsri.ac.id/id/eprint/25086

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