| 摘要 |
Isobutyl acetate cannot be completely removed from isobutyl acetate-isobutanol-water mixtures by distillation because of the presence of the minimum ternary azeotrope. Isobutyl acetate can be readily removed from mixtures containing it, isobutanol and water by using extractive distillation in which the extractive distillation agent is a higher boiling oxygenated, nitrogenous and/or sulfur containing organic compound or a mixture of these. Typical examples of effective agents are N,N-dimethylacetamide; dimethylformamide and dimethylsulfoxide; acetamide, dimethylformamide and dipropylene glycol.
|
