Separation of 3-methyl-2-butanone from formic acid by extractive

Details Separation of 3-methyl-2-butanone from formic acid by extractive Separation of 3-methyl-2-butanone from formic acid by extractive

1992-03-30

1993-03-02

Bascomb, Jr., 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 62, 203 63, 562609, 568410, B01D 340, C07C 4583, C07C 5302

Patent

active

051906198

ABSTRACT:
3-Methyl-2-butanone cannot be separated from formic acid by distillation because of the presence of the maximum boiling azeotrope. 3-Methyl-2-butanone can be readily removed from formic acid by extractive distillation using dimethylsulfoxide (DMSO). Typical effective agents are: DMSO and heptanoic acid; DMSO, octanoic acid and butyl benzoate.

REFERENCES:
patent: 3013954 (1961-12-01), Pacoud et al.
patent: 4459178 (1984-07-01), Berg et al.
patent: 4793901 (1988-12-01), Berg et al.
patent: 4840707 (1989-06-01), Berg et al.
patent: 4861436 (1989-08-01), Berg et al.

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