Production of solketal (2,2-Dimethyl-1,3-dioxolane-4- methanol) from glycerol and acetone by using homogenous acidic catalyst at the boiling temperature (preliminarry study)

Mahreni, Mahreni and Marnoto, Tjukup and Muhamad Maulana Azimatun Nur, Nur (2019) Production of solketal (2,2-Dimethyl-1,3-dioxolane-4- methanol) from glycerol and acetone by using homogenous acidic catalyst at the boiling temperature (preliminarry study). Journal of Physics: Conference Series, 1295 (1). pp. 1-10. ISSN Series1295 (2019) 012004IOP

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Official URL: http://iopscience.iop.org/issue/1742-6596/1295/1

Abstract

Abstract. Currently, solketal is produced from glycerol and acetone by using heterogeneous catalyst. However, a solid heterogeneous catalyst is not preferable since water contained in the glycerol, is adsorbed on the surface of the catalyst. Water could act as inhibitor in the reaction and lowering the activity of the catalyst. Therefore, homogenous acid catalyst is proposed to avoid the inhibition during the reaction. The aim of this research was to utilize sulphuric acid as the homogenous acid catalyst, to explore the effect of the mole ratio glycerol:acetone to the conversion, and determine the entrophy and entaphy of the reaction . The process was carried out in a three neck reactor equipped with a heater, temperature control, cooler and stirrer. The reaction conditions were set at a constant boiling temperature, the reaction time was varied at 4 - 12 h, and the mole ratio of acetone to glycerol was varied in the range of 2:1 - 7: 1. Results indicated that the highest conversion (>80 %) was recorded at 62°C, 10 h, and 6.9:1 mole ratio. The conversion of glycerol to solketal was influenced by mole ratio which is consistent to Lecatelier principle. From the entropy (ΔS =280.02 J. mole K-1) and enthalpy (ΔH= 95.948 J. mole-1), it can be concluded that the reaction of solketal formation was exothermic. Keywords: acetone; catalyst; glycerol; solketal; sulphuric acid;

Item Type: Article
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Dr Mahreni Mahreni
Date Deposited: 11 Nov 2019 00:27
Last Modified: 11 Nov 2019 00:28
URI: http://eprints.upnyk.ac.id/id/eprint/21708

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