Process for producing carboxylic acids
AssigneeRhodia Polyamides Intermediates
InventorsDidier Bonnet, Tania Ireland, Jean-Pierre Simonato
Life of this patent
Estimating the term…
Abstract
The present invention relates to a process for producing carboxylic acids. It relates more particularly to a process for producing carboxylic acids by oxidation of a hydrocarbon with oxygen or a gas containing oxygen, and even more particularly to the oxidation of cyclohexane to adipic acid. It relates to a process comprising a step consisting of hydrolysis of the esters formed during the oxidation step.
Claims21
A process for producing carboxylic acids by oxidation of a hydrocarbon with oxygen or a gas containing oxygen with the formation of esters in a reaction medium, in the presence of a monocarboxylic acid-based solvent and of an oxidation catalyst, comprising the steps of hydrolysing the esters formed as byproducts by carrying out a treatment of the reaction medium before extraction of the carboxylic acids or a treatment of the organic phase derived from the reaction medium after extraction of the carboxylic acids formed, wherein said hydrolysis is carried out by addition of a strong acid to the medium to be treated.
Dependencies are inferred from the claim text.