| 摘要 |
2-Butanol cannot be completely removed from 2-butanol - t-amyl alcohol mixtures by distillation because of the proximitry of their boiling points. 2-Butanol can be readily removed from mixtures containing it and t-amyl alcohol by using extractive distillation in which the extractive agent is a higher boiling benzoate. Typical examples are methyl benzoate; methyl benzoate and salicylic acid; methyl benzoate, cinnamic acid and hexahydrophthalic anhydride.
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