Etherification of Glycerol with Propylene or 1-Butene for Fuel Additives

Table 3

Cetane number of diesel and palm biodiesel after adding 10% of the oxygenated additives.

Fuel	Density (g/cm^3) at 15°C	CN
Diesel	0.8145	55.0
Diesel + ethanol	0.8133	54.9
Diesel + MTBE	0.8121	56.4
Diesel + PGEs	0.8203	52.0
Diesel + TPGE	0.8188	49.3
Diesel + BGEs	0.8260	52.8
B100	0.8241	67.5
B100 + ethanol	0.8199	69.0
B100 + MTBE	0.8166	70.2
B100 + PGEs	0.8270	66.2
B100 + TPGE	0.8245	67.1
B100 + BGEs	0.8293	66.7

Data are shown as the mean ± 1.08 SD derived from 3 independent samples.