Production of solketal (2,2- Dimethyl-1,3-dioxolane-4- methanol)

Mahreni, Mahreni and Marnoto, Tjukup and Nur, Maulana Azimatun (2019) Production of solketal (2,2- Dimethyl-1,3-dioxolane-4- methanol). IOP Conf. Series: Journal of Physics: Conf. Series 1295 (2019) 012004.

Text 2.2. HASIL UJI JURNAL SOLKETAL Q3.pdf Download (1MB)

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 (∆S =280.02 J.
mole K-1
) and enthalpy (∆H= 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:	Other
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User:	Dr.Ir., MT Mahreni Mahreni
Date Deposited:	25 Jun 2022 06:32
Last Modified:	30 Mar 2023 00:54
URI:	http://eprints.upnyk.ac.id/id/eprint/30076

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