| 柱层析分离-气相色谱法测定脂肪酸甲酯乙氧基化物中二酯含量 |
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| 引用本文： | 吴文清,孙永强,田春花,刘广宇,史修启,张勇. 柱层析分离-气相色谱法测定脂肪酸甲酯乙氧基化物中二酯含量[J]. 理化检验(化学分册), 2011, 0(4) |
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| 作者姓名： | 吴文清 孙永强 田春花 刘广宇 史修启 张勇 |
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| 作者单位： | 中国日用化学工业研究院; |
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| 基金项目： | “十一五”国家科技支撑计划项目(2007BAE52B00) |
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| 摘 要： | 采用硅胶柱层析-气相色谱法对月桂酸甲酯乙氧基化物(LME)中副产物二酯进行了定量分离与测定,同时考察了不同条件下合成的LME中二酯含量的变化规律。结果表明:LME中二酯含量随环氧乙烷(EO)加合数(n)的增加而先增大后趋平衡,当加合数n为8时,其质量分数为2.13%;并随反应温度升高而增大;随原料甲酯所含碳原子个数增加而降低。
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| 关 键 词： | 柱层析法 二酯 月桂酸甲酯乙氧基化物 脂肪酸甲酯乙氧基化物 |
GC Determination of Di-esters in Methyl Ester Ethoxylates of Fatty Acids with Column Chromatographic Separation |
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| WU Wen-qing,SUN Yong-qiang,TIAN Chun-hua,LIU Guang-yu,SHI Xiu-qi,ZhANG Yong. GC Determination of Di-esters in Methyl Ester Ethoxylates of Fatty Acids with Column Chromatographic Separation[J]. Physical Testing and Chemical Analysis Part B:Chemical Analgsis, 2011, 0(4) |
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| Authors: | WU Wen-qing SUN Yong-qiang TIAN Chun-hua LIU Guang-yu SHI Xiu-qi ZhANG Yong |
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| Affiliation: | WU Wen-qing,SUN Yong-qiang,TIAN Chun-hua,LIU Guang-yu,SHI Xiu-qi,ZhANG Yong (China Research Institute of of Chemical Industry of Daily Necessities,Taiyuan 030001,China) |
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| Abstract: | Column chromatography was applied to the separation and GC determination of by-products of di-esters in lauric acid methyl ester ethoxylates(LME).The law of change of content of di-esters was studied when LME was synthesized under different conditions.The content of di-esters in LME was found to increase gradually and attained to equilibrium with the increase of addition number(n)of ethylene oxide(EO).and the content of di-esters found was 2.13% when n was 8.In addition,the content of di-esters was found to... |
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| Keywords: | Column chromatography Di-esters Lauric acid methyl ester ethoxylates Methyl ester ethoxylates of fatty acid |
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