METHOD OF DEHYDRATING ALCOHOL-CONTAINING MIXTURE Russian patent published in 2011 - IPC C07C31/02 B01D17/05 B01D3/14 

FIELD: chemistry.

SUBSTANCE: alcohol-containing mixture is mixed with acetic or propionic aldehyde in weight ratio 100:(10-45). The obtained mixture is held in the presence of an acid catalyst until stratification and the organic layer is separated from the aqueous layer. The organic layer undergoes deep dehydration by heating to boiling point with reclamation of aldehyde via fractionation to obtain anhydrous alcohol or a mixture of alcohols in the still residue. The acid catalyst used is preferably an ion-exchange resin in hydrogen form or a synthetic zeolite.

EFFECT: method is universal since it has high process flexibility with respect to raw material, and provides considerable efficiency when dehydrating an alcohol-containing mixture containing alcohols with three to five carbon atoms with very low power consumption.

5 cl, 4 ex