色谱

色谱

• 专论综述 • 上一篇    下一篇

气相色谱法在生物柴油生产工艺研究中的应用

李长秀1,杨海鹰1,王丽琴2,田松柏1

  

  1. 1.Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China; 2.China Telecommunication Technology Labs, China Academy of Telecommunication Research, Ministry of Information Industry of the People’s Republic of China, Beijing 100045, China
  • 收稿日期:2005-10-12 修回日期:2005-12-14 出版日期:2006-09-30 发布日期:1986-09-25
  • 通讯作者: 李长秀

Application of Gas Chromatography in Research of Biodiesel Processing

LI Changxiu1, YANG Haiying1, WANG Liqin2, TIAN Songbai1   

  1. 1.Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China; 2.China Telecommunication Technology Labs, China Academy of Telecommunication Research, Ministry of Information Industry of the People’s Republic of China, Beijing 100045, China
  • Received:2005-10-12 Revised:2005-12-14 Online:2006-09-30 Published:1986-09-25

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摘要：

综述了气相色谱法在生物柴油生产工艺研究中的应用,包括反应产物和生物柴油产品中脂肪酸甲酯含量和分布的测定,单脂肪酸甘油酯、二脂肪酸甘油酯和三脂肪酸甘油酯含量的测定,游离脂肪酸含量的测定以及微量甲醇含量的测定等。讨论了进样方式、色谱柱类型、硅烷化等因素对反应产物组成测定的影响;提出了一种采用双柱压力反吹的方式测定生物柴油产品中微量甲醇含量的方法：采用正丙醇作内标,甲醇与内标通过预切柱进入分析柱后,通过压力变化,将其余组分通过分流出口反吹出色谱系统;采用极性聚乙二醇色谱柱测定了8种不同植物油中脂肪酸甲酯的含量和分布。

关键词: 甘油酯 , 气相色谱法, 生物柴油, 脂肪酸甲酯

Abstract:

Applications of gas chromatography in the research of biodiesel processing are reviewed with 27 references, including the analysis of fatty acid methyl esters (FAME) in the reaction products and final biodiesel, the determination of mono-, di- and tri-glycerides, the contents and distribution of free fatty acids, and the determination of trace methanol in biodiesel. The effects of various factors for analysis of the reaction products are discussed, such as injection mode, column type and silylation. A method for the determination of trace methanol in biodiesel products with dual-columns and pressure backflush system is proposed. 1-Propanol was used as the internal standard. After methanol and 1-propanol entered the analytical column through pre-column, the pressure was changed to backflush the heavy components through the split vent. A polar PEG-20M column was applied for the analysis of the contents and distribution of FAME in biodiesels from 8 different vegetable oils.

Key words: biodiesel, fatty acid methyl esters, glycerides , gas chromatography (GC)