| 摘要 |
PURPOSE:When alcohol is recovered from a lower aliphatic alcohol solution containing surlfuric acid, the distillation is carried out in the presence of a certain or more amount of water based on the sulfuric acid to facilitate the recovery of alcohol almost free from ether. CONSTITUTION:In the recovery of a lower aliphatic alcohol such as methanol, ethanol, propanol, or butanol from a sulfuric acid-containing aliphatic alcohol with is used as a reaction solvent or reaction substrate, the distillation is conducted, after water is added to the distillation system in an amount of 0.3 or more, preferably 0.3-9pt.wt. per 1pt.wt. of the sulfuric acid.
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