Separation of t-Amyl alcohol from isobutanol by extractive disti

Details Separation of t-Amyl alcohol from isobutanol by extractive disti Separation of t-Amyl alcohol from isobutanol by extractive disti

1987-03-02

1987-09-15

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 57, 203 60, 203 61, 203 64, 568913, B01D 340, C07C 2984

Patent

active

046937870

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 form 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: dimethylsulfoxide; dimethylsulfoxide and N,N-dimethylacetamide; dimethylsulfoxide, dimethylformamide and phthalic anhydride.

REFERENCES:
patent: 1862706 (1932-06-01), Ricard et al.
patent: 2483246 (1949-09-01), Stribley
patent: 2551584 (1951-05-01), Carlson et al.
patent: 2559519 (1951-07-01), Smith et al.
patent: 2570205 (1951-10-01), Carlson et al.
patent: 2595805 (1952-05-01), Morrell et al.
patent: 4366032 (1982-12-01), Mikitenko et al.

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