Separation of n-propanol from 2-butanol by extractive distillati

Details Separation of n-propanol from 2-butanol by extractive distillati Separation of n-propanol from 2-butanol by extractive distillati

1985-09-16

1987-12-29

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 60, 203 61, 203 71, 568913, B01D 340, C07C 2984

Patent

active

047159332

ABSTRACT:
n-Propanol and 2-butanol cannot be separated from each other by distillation because of the proximity of their boiling points. n-Propanol can be readily separated from 2-butanol using extractive distillation in which the extractive agent is a higher boiling oxygenated organic compound or a mixture of two or more of these. Typical examples of effective agents are: methyl benzoate; benzoic acid and methyl benzoate; cinnamic acid, phthalic anhydride and methyl benzoate.

REFERENCES:
patent: 2551584 (1951-05-01), Carlson et al.
patent: 2552412 (1951-05-01), Drout et al.
patent: 2559519 (1951-07-01), Smith et al.
patent: 2559520 (1951-07-01), Smith et al.
patent: 2570205 (1951-10-01), Carlson et al.
patent: 2575243 (1951-11-01), Carlson et al.
patent: 2591712 (1952-04-01), Morrell et al.
patent: 2591713 (1952-04-01), Morrell et al.
patent: 2706707 (1955-04-01), Morrell et al.

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