MAHRENI, Mahreni and Tjukup, Marnoto and Muhammad Azimatun Nur, Azim (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). The 3rd International Conference of Chemical and Materials Engineering,J. Phys.: Conf. Ser. 1295 012004, 1295. pp. 1-9. ISSN doi:10.1088/1742-6596/1295/1/012004
|
Text
SOLKETAL (ICCME 2019 (PUBLISH).pdf Download (678kB) | Preview |
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: | Q Science > QD Chemistry |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Chemistry |
| Depositing User: | Dr Mahreni Mahreni |
| Date Deposited: | 24 Mar 2020 03:45 |
| Last Modified: | 24 Mar 2020 03:45 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/22633 |
Actions (login required)
 |
View Item |