Production of Triacetin by Microwave Assisted Esterification of Glycerol Using Activated Natural Zeolite

*Marwan Marwan -  Chemical Engineering Department, Faculty of Engineering, Syiah Kuala University , Darussalam, Banda Aceh - 23111, Indonesia
Eti Indarti -  Department of Agricultural Product Technology, Faculty of Agriculture, Syiah Kuala University , Darussalam, Banda Aceh - 23111, Indonesia
Darmadi Darmadi -  Chemical Engineering Department, Faculty of Engineering, Syiah Kuala University , Darussalam, Banda Aceh - 23111, Indonesia
Wahyu Rinaldi -  Chemical Engineering Department, Faculty of Engineering, Syiah Kuala University , Darussalam, Banda Aceh - 23111, Indonesia
Dzikri Hamzah -  Chemical Engineering Department, Faculty of Engineering, Syiah Kuala University , Darussalam, Banda Aceh - 23111, Indonesia
Taufik Rinaldi -  Chemical Engineering Department, Faculty of Engineering, Syiah Kuala University , Darussalam, Banda Aceh - 23111, Indonesia
Received: 25 Jan 2019; Revised: 3 Jun 2019; Accepted: 3 Jun 2019; Published: 1 Dec 2019; Available online: 30 Sep 2019.
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Section: The 3rd International Conference on Chemical and Material Engineering 2018 (ICCME 2018)
Language: EN
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Abstract

Triacetin, an alternative biodiesel additive, was prepared by esterification of glycerol with acetic acid in the presence of chemically activated natural zeolite. The esterification was carried out in a small reaction flask under microwave irradiation. The catalyst was characterized for its morphology by SEM and its chemical composition by X-ray Diffraction (XRD). The Scanning Electron Microscopy (SEM) micrograph indicates improved surface area of the zeolite, while the XRD analysis shows an increase in Si/Al ratio from natural zeolite to 6.042 and its crystallinity value of 12.23%. The Fourier Transform Infra Red (FTIR) analysis obtained showed that microwave-heated samples have an esters group spectrum of triacetin at 1702 cm-1. The conversion value of glycerol was more than 95% at molar ratio of the reactants 1:9 and catalyst loading of 3%. The selectivities for monoacetin, diacetin and triacetin were 80.1%, 15.4%, and 4.5% at 60 minutes, and 43.0%, 48.6%, and 8.3% at 90 minutes. It shows that the conversion took place in consecutive steps and the use of microwave allows the reaction proceeding at milder condition. Copyright © 2019 BCREC Group. All rights reserved

 

Keywords
Triacetin; Glycerol; Biodiesel Additive; Zeolite; Microwave

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