Acetic Acid → Butyric Acid

HRID 1731722Notes

Reaction equation

HRID 1731722 reaction equation
[C:1]([OH:4])(=[O:3])[CH3:2].[Co:5].[CH3:6][CH2:7]CC>C(O)C>[Co:5].[C:1]([OH:4])(=[O:3])[CH2:2][CH3:6].[C:1]([OH:4])(=[O:3])[CH2:2][CH2:6][CH3:7].[C:1]1(=[O:4])[O:3][CH2:7][CH2:6][CH2:2]1

Participants

8

Reactant 3

HCID 176Acetic AcidHCID 7843ButaneHCID 104730Cobalt

Product 4

HCID 264Butyric AcidHCID 1032Propionic AcidHCID 7302Gamma-ButyrolactoneHCID 104730Cobalt

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

For recovery of acetic acid from such ethanol promoted cobalt catalyzed oxidation of liquid butane said patent discloses charging the liquid oxidation effluent to a light ends removal column where dissolved unreacted butane and oxygenated compounds boiling lower than acetic acid are distilled off and recycled to the oxidation. The bottoms from the column are charged to a second column for the purpose of removing metal catalyst where 60% of the charged is distilled off to leave a solution of cobalt in acetic acid (propionic acid, butyric acid and butyrolactone also present) as residue for recycle to the oxidation. Said 60% distillate is fed to a drying (third) column from which dry acetic acid is taken as a bottoms product and then subjected to distillative refining (fourth column) to meet commercial specifications for glacial acetic acid.

Workup

  1. customremoval column where
  2. dissolutiondissolved unreacted butane
  3. customoxygenated compounds
  4. distillationare distilled off
  5. additionThe bottoms from the column are charged to a second column for the purpose of removing metal catalyst where 60% of the charged
  6. distillationis distilled off

Sources & evidence

ORD record
ord-1c16e934ed6a4995a636a928c1ed4c0d
Source dataset
uspto-grants-1986_11
Patent number
US04623432

Reaction notes

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