Synthesis of acetins from ethyl acetate via transesterification with glycerol using a sulphonic acid type ion-exchange resin

Q3 Chemistry

European Chemical Bulletin Pub Date : 2020-11-29 DOI:10.17628/ecb.2020.9.420-424

Sravanthi Veluturla, Archna Narula, Kamolpun Sathitsommon, L. V. Anirudh

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引用次数: 1

Abstract

Demand for biodiesel has increased over the years as a substitute to petrol and diesel due to its environmental-friendly nature and lower cost. Glycerol being major by-product of the process constitutes 10 wt.% of the products hence conversion of glycerol to value added products such as acetins in the plant reduces the production cost of biodiesel. The present work focuses on the transesterification reaction between glycerol and ethyl acetate over heterogeneous catalyst, Amberlyst-15(wet). The batch studies were carried out and the effect of reaction parameters such as reaction time (1-7 h), glycerol to ethyl acetate molar ratio (1:3-1:12), temperature (50-70 o C), catalyst loading (2-5 w/w%) have been studied. The maximum conversion of glycerol obtained at (G : EA) molar ratio 1:6, reaction temperature of 70 ˚C and 4 w/w% catalyst loading for 7 h was 97.71 % and the selectivity of mono-, di- and triacetins were 36.7, 60.7 and 2.51 %, respectively. This provides an eco-friendly and sustainable path for valorisation of biodiesel derived glycerol.

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磺酸型离子交换树脂与甘油酯交换合成乙酸乙酯

近年来，生物柴油作为汽油和柴油的替代品，由于其环保和成本较低，对其的需求有所增加。甘油是该过程的主要副产品，占产品的10%，因此在工厂中将甘油转化为附加值产品，如乙酰，降低了生物柴油的生产成本。本研究的重点是甘油和乙酸乙酯在非均相催化剂Amberlyst-15(湿)上的酯交换反应。对反应时间(1 ~ 7 h)、甘油与乙酸乙酯的摩尔比(1:3 ~ 1:12)、温度(50 ~ 70℃)、催化剂负载(2 ~ 5 w/w%)等参数的影响进行了批量研究。在(G: EA)摩尔比为1:6、反应温度为70℃、催化剂负载为4 w/w%、反应时间为7 h的条件下，甘油的最大转化率为97.71%，单乙酰、二乙酰和三乙酰的选择性分别为36.7%、60.7%和2.51%。这为生物柴油衍生甘油的增值提供了一个生态友好和可持续的途径。

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来源期刊

European Chemical Bulletin Chemistry-Chemistry (all)

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审稿时长

6 weeks