摘要:
Conjugated linoleic acids cannot be separated by distillation or rectification because of the closness of their boiling points. Conjugated linoleic acids can be separated by azeotropic distillation. Effective agents are butyraldehyde, butyl ether and 1-methyl-2-pyrrolidinone.
摘要:
1,2,4-Trimethylbenzene is difficult to separate from 1,2,3-trimethylbenzene by conventional distillation or rectification because of the proximity of their boiling points. 1,2,4-trimethylbenzene can be readily separated from 1,2,3-trimethylbenzene by extractive distillation. Effective agents are 3-nitrotoluene, m-cresol and sulfolane.
摘要:
2-Butanol cannot be sparated from t-amyl alcohol by distillation or rectification because of the closeness of their boiling points. 2-Butanol is readily separated from t-amyl alcohol by extractive distillation. Effective agents are butyl ether, benzyl acetate and 1,2,4-trimethyl benzene.
摘要:
4-Methyl-2-pentanol cannot be separated from 3-methyl-1-butanol by distillation because of the closeness of their boiling points. 4-Methyl-2-pentanol can be easily separated from 3-methyl-1-butanol by extractive distillation. Effective agents are dodecane, dimethylformamide and dimethylsulfoxide.
摘要:
2-Butanol cannot be separated from isobutanol by distillation or rectification because of the closeness of their boiling points. 2-Butanol is readily separated from isobutanol by extractive distillation. Effective agents are propylene glycol propyl ether, 2-methoxyethanol and ethyl acetate.
摘要:
4-Methyl-2-pentanol cannot be separated from 3-methyl-1-butanol by distillation because of the closeness of their boiling points. 4-Methyl-2-pentanol can be easily separated from 3-methyl-1-butanol by azeotropic distillation. Effective agents are m-xylene and cumene.
摘要:
1-Propanol and t-amyl alcohol cannot be separated by distillation or rectification because of the closeness of their boiling points. 1-Propanol is readily separated from t-amyl alcohol by extractive distillation. Effective agents are dipentene, amyl acetate and 1,4-dioxane.
摘要:
3-Methyl-1-butanol cannot be separated from 1-pentanol by distillation or rectification because of the closeness of their boiling points. 3-Methyl-1-butanol is readily separated from 1-pentanol by azeotropic distillation. Effective agents are methylcyclohexane, methyl formate and tetrahydrofuran.
摘要:
Ethanol, isopropanol and water cannot be separated from each other by rectification because of the presence of minimum azeotropes. They are readily separated by azeotropic distillation. Effective agents are cyclopentane for ethanol from water, methyl acetate for isopropanol from water.
摘要:
2-Methyl-1-propanol is difficult to separate from 2-butanol by conventional distillation or rectification because of the proximity of their boiling points. 2-Methyl-1-propanol can be readily separated from 2-butanol by extractive distillation. Effective agents are hexyl acetate, dimethyl phthalate and p-xylene.