摘要
在无溶剂状态下,以十八醇和硬脂酸为原料,以对甲苯磺酸(PTSA)为催化剂,微波协助合成了硬脂酸十八醇酯.利用正交实验法探究了酯化反应的各种影响,其影响因素的大小依次为D>A>C>B;其反应的最优条件:醇酸物质的量比(A)为1∶1.2,催化剂用量(B)为0.2 g,微波辐射功率(C)为514 W,微波辐射时间(D)为40 m in,产率可达94.35%.
Octadecyl stearate is synthesized by esterification using solid state reaction technology in catalysis of p-methyl toluene sulfonic acid（PTSA） assisted by clean and efficient microwave irradiation.The effect of different factors on the yield of octadecyl stearate by using othogonal experiment is carefully studied.The results show that the sequence of four factors of octadecyl stearate is DACB,and it is found that the optimum reaction conditions are as follows： the molar ratio of octadecanal to stearic acid（A） is 1∶1.2, the amount of catalyst（B） is 0.2 g,the microwave irradiation power（C） is 514 W,the microwave irradiation time（D） is 40 min.The yield of octadecyl stearate reaches 94.35% at this optimum conditions.
出处
《许昌学院学报》
CAS
2011年第2期95-98,共4页
Journal of Xuchang University
基金
河南省教育厅自然科学研究计划项目(2008B150019)
关键词
硬脂酸十八醇酯
固态合成
微波辐射
酯化
正交实验法
octadecyl stearate
solid-state synthesis
microwave irradiation
esterification
othogonal experiment
