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Synthesis and characterization of monoacylglycerols through glycerolysis of ethyl esters derived from linseed oil by green processes

机译:绿色工艺通过亚甲基油衍生乙酯氨基甘油的合成与表征

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The synthesis of monoacylglycerol (MAG) through the glycerolysis of ethyl ester mixture (biodiesel) was investigated in this study from linseed oil, low-cost alternative feedstock, using an alkaline catalyst with green reagent. The transesterification double step process (TDSP), reaction with ethanol to ethyl esters yielded 97%. In the glycerolysis reaction, the optimum operating condition was in a temperature of 130 °C with 5% sodium hydroxide (NaOH) in 1?:?5 biodiesel–glycerol and 12 h reaction time, in open reactor. The reaction conditions showed an interesting conversion and monoacylglycerol yield of 98% and 76%, respectively. The determination and characterization of reaction products was carried out by Gas Chromatography (GC) method, Infrared Spectroscopy (IR), Thermogravimetric Analysis (TGA) and Hydrogen Nuclear Magnetic Resonance Spectroscopy ( ~(1) H NMR).
机译:通过用绿色试剂的碱性催化剂,研究了通过亚甲酯混合物(生物柴油)甘油解(生物柴油)的单酰基甘油(Mag)的合成。酯交换双步工艺(TDSP),与乙醇反应至乙酯,得到97%。在甘油水解反应中,最佳操作条件在130℃的温度为130℃,其中5%氢氧化钠(NaOH)1?:α:5个生物柴油 - 甘油和12小时反应时间,在开放式反应器中。反应条件分别显示出有趣的转化和单酰基甘油产率分别为98%和76%。反应产物的测定和表征通过气相色谱(GC)方法,红外光谱(IR),热重分析(TGA)和氢核磁共振光谱(〜(1)H NMR)进行。

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