Process for removing amide impurities in aromatic carboxylic acids
Patents
| Language: |
Английский |
| Type: |
Patent request |
| Number |
WO 2015053961 A1 |
| Request number: |
PCT/US2014/057658 |
| Request date: |
Sep 26, 2014 |
| patent.field.start_date: |
|
| Registration date: |
|
| patent.field.request_publication_date: |
Apr 16, 2015 |
| Authors |
Buchbinder A.
,
Bhattacharyya A.
,
Jarusiripipat T.
,
Shih R.
,
Walenga J.T.
,
Kuznetsova N.I.
|
| Affiliations |
| 1 |
Honeywell UOP (formely UOP LLC)
|
|
A process for oxidizing alkyl aromatic compounds is described. The process includes contacting the alkyl aromatic compound; an oxidation solvent comprising a carboxylic acid; ammonia or an ammonium compound; a bromine source; a catalyst; and an oxidizing agent in a reaction zone under oxidizing conditions to produce an oxidation product comprising an aromatic carboxylic acid, and an aromatic amide compound; and hydrolyzing the aromatic amide compound with a hydrolyzing agent to form an ammonium compound or ammonia and the aromatic carboxylic acid, wherein the hydrolyzing agent comprises an acid, or water, or both.