Synthesis of Ethylenediamine Modified Chitosan Beads for Biodiesel Production Catalyst: A Preliminary Study

Indah Permata Cantika, Muhammad Ali Zulfikar, Handajaya Rusli
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Abstract

Biodiesel is an alternative fuel that can be easily produced through transesterification with the assistance of a catalyst. Palm oil is a widely utilized feedstock for biodiesel production due to its abundant availability. In this study, a catalyst was synthesized using chitosan (CS) modified with ethylenediamine (EDA) and cross-linked with epichlorohydrin (ECH) for a catalyst heterogeneous in transesterification reaction. The resulting product (CS/EDA/ECH) was characterized using Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Its performance was evaluated for biodiesel production. The CS/ECH/EDA catalyst achieved optimal reaction conditions with 5% EDA concentration at room temperature, an oil: methanol ratio of 1:1 (v/v), a total volume of 10 mL of oil and methanol, and a catalyst mass of 0.75 grams. The methyl esters formed corresponded to the fatty acid content in palm kernel, namely methyl palmitate, methyl 9,10-octadecadienoate, methyl oleate, methyl 12,13-tetradecadienoate, and methyl stearate with the highest methyl ester conversion is methyl oleate. The CS/ECH/EDA catalyst exhibited consistent performance after three use cycles.
生物柴油催化剂乙二胺改性壳聚糖微球的合成初探
生物柴油是一种替代燃料,在催化剂的辅助下通过酯交换反应可以很容易地生产出来。棕榈油由于其丰富的可用性而被广泛应用于生物柴油的生产。本研究以乙二胺(EDA)改性壳聚糖(CS)与环氧氯丙烷(ECH)交联为催化剂,合成了一种多相酯交换反应催化剂。利用傅里叶变换红外光谱(FTIR)和扫描电镜(SEM)对产物CS/EDA/ECH进行了表征。对其在生物柴油生产中的性能进行了评价。CS/ECH/EDA催化剂的最佳反应条件为:室温下,EDA浓度为5%,油甲醇比为1:1 (v/v),油甲醇总量为10 mL,催化剂质量为0.75 g。棕榈仁中形成的甲酯与脂肪酸含量相对应,即棕榈酸甲酯、9、10-十八烯二酸甲酯、油酸甲酯、12、13-十四烯二酸甲酯,硬脂酸甲酯转化率最高的是油酸甲酯。CS/ECH/EDA催化剂经过3次循环使用后表现出一致的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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