Liu Dehua
2001
Citations
0
Influential Citations
8
Citations
Journal
Journal of Tsinghua University
Abstract
propanediol (1,3 PD) is a major monomer used for the production of poly (propylene terephthalate). This paper tested the extraction of 1,3 PD from a dilute solution. The results indicated that normal physical or chaleting extraction does not effectively separate 1,3 PD. However, for acid resin catalysis, a process coupling the reversible reaction of 1,3 PD with acetaldehyde to 2 methyl 1,3 dioxane and a synchronous extraction of the product by toluene effectively separated 1,3 PD from dilute aqueous solutions. The overall recovery of 1,3 PD is about 99.1%, the dioxane yield is 91.2%, and the dioxane distribution coefficient is 3.35 . Therefore, the separation method using reactive extraction is feasible for the production of 1,3 PD by fermentation.