Separation of 3-methyl-2-pentenal from N-butanol by extractive distillation

摘要

3-Methyl-2-pentenal cannot be separated from n-butanol by conventioal rectification because of the proximity of their boiling points. 3-methyl- 2-pentenal can be readily separated from n-butanol by extractive distillation. Effective agents are 1-methyl-2-pyrrolidinone, 1, 4- butanediol and phenol.