heal.abstract |
Generally, chemical compounds with a pro-knock behaviour in gasoline have a beneficial effect on the cetane number. Therefore, amines of various structures were assessed as potential diesel fuel extenders. Although the addition of small amounts of many primary amines in gasoline significantly increases the octane number of the fuel blend, the movement towards the corresponding tertiary amines has a strong negative effect on octane number. Measurements of cetane numbers and cold-flow properties (cloud point, pour point and cold filter plugging point) of amines of different structure were made. It is concluded that the permethylated mono-, di- and polyamines investigated, enhance the ignition quality of the base fuel and also have good cold-flow performance. The tertiary methylated fatty amines offer the extra benefit that they can be produced from renewable starting materials (fatty acids), and, thus may act as extenders not only for mineral diesel but also for biodiesel. |
en |