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

Figure 7

Catalyst reuse: product distribution of etherification of glycerol with 1-butene in three sequential catalytic runs reusing Amberlyst-15 with acidity measurement [glycerol : 1-butene = 1 : 4, catalyst 10 wt% based on glycerol, temp 100°C, 72 h]. The data are shown as the mean ± 1.81 SD derived from 3 independent samples.