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

Figure 1

Mass spectra of propyl glycerol ethers: (a) 1-MPGE and 2-MPGE, (b) 1,3-DPGE, (c) 1,2-DPGE, and (d) TPGE.

(a)

(b)

(c)

(d)