Methyl esters have been widely used as the intermediate componds for a number of derivative products in oleochemical indutries, such as fatty alcohol, alkanolamide, monostearat glycerol and surfactant. The purpose of this research is to study the kinetics of amidation from methyl ester and diethanolamide by using sulfuric acid catalyst. The amidation that is the reaction between methyl ester and diethanolamine was held in a glass, batch reactor for 8 hours with mole ratio 1:1 using acid catalyst (H2SO4 0, 5 % (w/w) and 200 rpm .stirring. The reaction temperature was varied from 120 to 160 c and sampling was performed every 30 minutes. The analysis includes Gas Chromatograpy-Mass Spectrometry (GC-MS) to determine the moleculer weight of methyl ester, analysis of ester value to know the number of amide that was formed, and Fourier Transfer Infra-Red (FT-IR) to know the structure of amide. The best result ofthesynthesis was obtained at temperature reaction of 160 C (amide conversion of 98,36%). From the result of reaction was obtained that (-rA) = 0,02322. CA 0,1858 mol.dm-3.min-1, k ud0, 4069e(-2464,87/Rxl/T and the activation energy was 2464,87 cal/mol.ud
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机译:甲酯已被广泛用作油脂化学工业中许多衍生物的中间体,例如脂肪醇,链烷醇酰胺,单硬脂酸甘油酯和表面活性剂。这项研究的目的是研究使用硫酸催化剂由甲酯和二乙醇酰胺进行酰胺化反应的动力学。使用酸催化剂(H 2 SO 4 0,5%(w / w)和200rpm搅拌),将摩尔比为1∶1的甲基化与甲酯和二乙醇胺之间的反应酰胺化在玻璃分批反应器中保持8小时。温度从120到160 c不等,每30分钟进行一次采样,分析包括气相色谱-质谱法(GC-MS)以确定甲酯的分子量,分析酯值以了解所含酰胺的数量。在160℃的温度反应(酰胺转化率为98.36%)下获得最佳合成结果,并通过傅里叶转移红外(FT-IR)了解酰胺的结构。 (-rA)= 0,02322。CA 0,1858 mol.dm-3.min-1,k ud0,4069e(-2464,87 / Rxl / T,活化能为2464,87 cal / mol。 ud
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