Abstract
The downstream separation of 1,3‐propanediol from dilute aqueous solution was studied. A process combining reversible reaction of 1,3‐propanediol with acetaldehyde to 2‐methyl‐1,3‐dioxane and a simultaneous extraction of the product by organic solvent appears to be technically feasible and attractive. The dioxane yield was 91−92%, the overall conversion of 1,3‐propanediol was ca. 98%, and recovery of dioxane into the organic extractant was 75%.

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