Separation of t-amyl alcohol from isobutanol by extractive distillation
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United States of America Patent
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Sep 15, 1987
Grant Date -
N/A
app pub date -
Mar 17, 1987
filing date -
Mar 17, 1987
priority date (Note) -
Expired
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Abstract
t-Amyl alcohol and isobutanol cannot be separated from each other by distillation because of the proximity of their boiling points. t-Amyl alcohol can be readily separated from isobutanol by using extractive distillation in which the extractive agent is a higher boiling organic compound or a mixture of two or more of these. Typical examples of effective agents are: dimethylformamide; N,N-dimethylacetamide; N,N-dimethylacetamide and dimethylsulfoxide; dimethylformamide, N,N-dimethylacetamide and phthalic anhydride.
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