发明名称 |
Process for producing terephthalic acid |
摘要 |
A process for producing terephthalic acid from para-xylene. The process comprises forming a mixture comprising the para-xylene, a solvent, a bromine source, a catalyst, and ammonium acetate; and oxidizing the para-xylene by contacting the mixture with an oxidizing agent at oxidizing conditions to produce a solid oxidation product comprising terephthalic acid, para-toluic acid, 4-carboxybenzaldehyde. The solvent comprises a carboxylic acid having from 1 to 7 carbon atoms, and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium. |
申请公布号 |
US8933266(B2) |
申请公布日期 |
2015.01.13 |
申请号 |
US201113155677 |
申请日期 |
2011.06.08 |
申请人 |
UOP LLC |
发明人 |
Bhattacharyya Alakananda;Walenga Joel T. |
分类号 |
C07C51/16;C07C51/265 |
主分类号 |
C07C51/16 |
代理机构 |
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代理人 |
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主权项 |
1. A process for producing terephthalic acid from para-xylene, the process comprising:
forming a mixture comprising the para-xylene, a solvent, a bromine source, a catalyst and ammonium acetate wherein the amount of ammonium acetate ranges from about 1 wt % to about 100 wt %, relative to the weight of the solvent; and oxidizing the para-xylene by contacting the mixture with an oxidizing agent at oxidizing conditions to produce a solid oxidation product, the solid oxidation product comprising terephthalic acid, 4-carboxybenzaldehyde, and para-toluic acid; wherein the solvent comprises a carboxylic acid having from 1 to 7 carbon atoms, and the catalyst comprises at least one of cobalt, titanium, manganese, chromium, copper, nickel, vanadium, iron, molybdenum, tin, cerium, and zirconium. |
地址 |
Des Plaines IL US |