Optical property of biodiesel and base stock in terahertz region  

作　　者：Hui ZHAOI Kun ZHAO Lu TIAN Qing MIAO Hao NI 

机构地区：[1]Laboratory of Optic Sensing and Detecting Technology,College of Science,China University of Petroleum,Beijing 102249,China [2]State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China

出　　处：《Frontiers of Optoelectronics》2012年第2期214-217,共4页光电子前沿（英文版）

摘　　要：Biodiesel （BD） is the product of catalysed transesterification reaction, in which fatty acid （FA） is transformed to fatty acid methyl ester （FAME）, named BD. The frequency-dependent absorption and refractive characters of BDs and its base stocks have been researched in the spectral range of 0.2-1.5 THz by terahertz time-domain spectroscopy （THz-TDS）. The BDs showed higher absorption value than those of its base stocks because of the concomitant, and the increasing of absorption coefficients of three BDs differed with the different transesterification technology. The results suggested that THz-TDS can be a promising method to the quality control and ester transfer efficiency analysis of BD.Biodiesel （BD） is the product of catalysed transesterification reaction, in which fatty acid （FA） is transformed to fatty acid methyl ester （FAME）, named BD. The frequency-dependent absorption and refractive characters of BDs and its base stocks have been researched in the spectral range of 0.2-1.5 THz by terahertz time-domain spectroscopy （THz-TDS）. The BDs showed higher absorption value than those of its base stocks because of the concomitant, and the increasing of absorption coefficients of three BDs differed with the different transesterification technology. The results suggested that THz-TDS can be a promising method to the quality control and ester transfer efficiency analysis of BD.

关 键 词：terahertz time-domain spectroscopy （THz-TDS） biodiesel （BD） fatty acid methyl ester （FAME） 

分 类 号：O434.3[机械工程—光学工程] TE626.24[理学—光学]