Wang, Wenchao; Liu, Huili; Li, Fashe; Wang, Hua; Ma, Xin; Li, Jingjing; Zhou, Li; Xiao, Quan published the artcile< Effects of unsaturated fatty acid methyl esters on the oxidation stability of biodiesel determined by gas chromatography-mass spectrometry and information entropy methods>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is fatty acid methyl ester oxidation gas chromatog mass spectrometry.
To explore the trend of fatty acid Me esters (FAMEs) during the oxidation process of biodiesel, this study uses gas chromatog. – mass spectrometry (GC-MS) combined with information entropy theory to propose a new method to analyze the effect of FAMEs on the stability of biodiesel (especially with different amounts of unsaturated FAMEs). The induction periods of the main FAMEs in biodiesel were determined by the Rancimat method. The results showed that the longest induction period of Me stearate was 248 h, while the induction of Me linoleate was only 0.12 h. Accelerated oxidation of biodiesel, using GC-MS anal. showed that the oxidation trends of FAMEs was different. The oxidation rate of Me linoleate was the fastest. A math. equation was proposed to calculate the trend of FAMEs. The results showed that during the 5 h accelerated an oxidation process, the content of Me linoleate decreased from 28.35% to 2.10%, while the content of Me oleate decreased by 18.21%. Using information entropy, the weighting coefficients of FAMEs in the oxidation process of biodiesel were calculated The weighting coefficient of Me linoleate was as high as 0.6797. Me linoleate was the main reason why biodiesel was easily oxidized.
Renewable Energy published new progress about Biodiesel fuel. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics