棉籽油制备生物柴油的研究及分析

 为建立适合新疆地产棉籽油制备生物柴油的工艺条件和检测产物的方法,本实验采用单因素和正交试验优化了棉籽油制备生物柴油的反应条件,确定最佳反应条件为:醇油物质的量比5:1,KOH用量1.1%,温度40℃,反应时间60min.在此条件下,产率不低于98.6%.并初次联合使用薄层层析色谱和高效液相色谱定性定量分析棉籽油和棉籽油生物柴油.试验结果表明,该色谱分析方法,样品组分分离效果好,且线性关系良好,相关性系数均在0.99以上.

Preparation of biodiesel from cottonseed oil and its analysis

In order to investigate the appropriate condition for the synthesis biodiesel by cottonseed oil in local Xinjiang and feat analysis method for the product,The influential factors of synthesizing biodiesel were investigated by single factor experiments and orthogonal test.The optimized reaction parameters were catalyst concentration 1.1%,alcohol/oil molar ratio 5:1,temperature 40℃,and reaction time 60 min.Under the optimal condition,Yield of cottonseed oil methyl esters were not less than 98.6%.The reactant Triglycerides and cottonseed oil biodiesel were quality and qualitative analysis by TLC method combined with HPLC firstly.The experiment result showed that the analysis method we bring forward have many advantages as follows:the sample can be analysised quickly;fatty acid methyl esters in biodiesel can be separated and have good linearity between its concentration and peak area(r² >0.99).This method is simple,fast and has a good reproducibility.