发明名称 |
LIQUID PHASE OXIDATION OF P-XYLENE TO TEREPHTHALIC ACID IN THE PRESENCE OF A CATALYST SYSTEM CONTAINING NICKEL, MANGANESE, AND BROMINE ATOMS. |
摘要 |
A method for liquid phase oxidation of p-xylene with molecular oxygen to terephthalic acid that minimizes solvent loss through solvent burn and minimizes the formation of incomplete oxidation products such as 4-carboxybenzaldehyde (4-CBA). P-xylene is oxidized at a temperature in the range of 120 degree C to 250 degree C and in the presence of a source of molecular oxygen and a catalyst composition substantially free of zirconium atoms comprising a source of nickel (Ni) atoms, a source of manganese (Mn) atoms, and a source of bromine (Br) atoms, to form a crude reaction mixture comprising terephthalic acid and incompletely oxidized reaction products comprising 4-CBA, wherein the stoichiometric molar ratio of bromine atoms to manganese atoms is 1.5 or less, and the amount of nickel atoms is at least 500 ppm. |
申请公布号 |
MXPA06012058(A) |
申请公布日期 |
2007.01.25 |
申请号 |
MX2006PA12058 |
申请日期 |
2005.04.08 |
申请人 |
EASTMAN CHEMICAL COMPANY. |
发明人 |
GINO GEORGES LAVOIE |
分类号 |
B01J31/00;B01J31/04;C07C51/16;C07C51/265 |
主分类号 |
B01J31/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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