Removal of bromine from acetic acid
AssigneeStandard Oil Company (Indiana)
InventorWilford J. Zimmerschied
Life of this patent
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Abstract
Acetic acid of 95 to 100 weight percent strength containing ionic and coordinate bromide impurities can be purified to a bromine content of less than 3 ppm by the sequence of steps comprising catalytic hydrogenating said acetic acid, treating the hydrogenated acetic acid with a solid absorbant and separating acetic acid therefrom.
Claims5
The method of removing bromine from acetic acid of 95 to 100 weight percent concentration contaminated with ionic and co-ordinate bromine in a total amount of from 0.0005 to 0.015 weight percent by contacting hydrogen and said contaminated acetic acid with a palladium catalyst having Pd crystallites dispersed on the surface of low extraneous metal content activated carbon having a surface area to unit mass ratio of at least 800 m.sup.2 /g, separating the acetic acid from the catalyst, contacting the separated acetic acid with a solid absorbant, and separating acetic acid from the absorbant.
Dependencies are inferred from the claim text.