Methyl esters of saturated/unsaturated higher aliphatic acids (FAMEs) and a FAME of waste cooking oil (WCOME) were heated at 120°C in an air gas flow. The samples were analyzed before and after heating, using six different methods including electrospray ionization mass spectrometry. As a result, the samples after heating were found to contain low molecular weight aliphatic compounds and oligomers of the FAME. Based on the chemical structure of these oxidation products, reaction schemes were proposed for the deterioration of FAMEs. In addition, two unsaturated FAMEs containing 2,6-di-t-butyl-p-cresol (BHT) were similarly heated and analyzed to examine the effect of BHT on the oxidation of these FAME.
Analysis of Oxidative Deterioration of Biodiesel Fuel
Sae Int. J. Fuels Lubr
Sae International Journal of Fuels and Lubricants
Powertrains, Fuels and Lubricants Meeting ; 2008
Sae International Journal of Fuels and Lubricants ; 1 , 1 ; 1571-1583
2008-10-06
13 pages
Aufsatz (Konferenz)
Englisch
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