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公开(公告)号:US5171881A
公开(公告)日:1992-12-15
申请号:US619553
申请日:1990-11-29
申请人: Sang H. Park , Jae S. Go , Jung W. Sim , Chun G. Kim
发明人: Sang H. Park , Jae S. Go , Jung W. Sim , Chun G. Kim
IPC分类号: B01J27/08 , B01J31/04 , C07B61/00 , C07C51/265 , C07C55/24 , C07C63/307
CPC分类号: C07C51/265
摘要: It is a process for producing trimellitic acid (trimellitic acid, 1, 2, 4-tricarboxylic acid) by oxidizing pseudocumene with a molecular oxygen containing gas. More particularly, pseudocumene is oxidized into trimellitic acid by introducing a molecular oxygen containing gas in an acetic acid solvent in the presence of oxidizing catalysts, wherein the oxidization reactions in two different stages which have different ranges of temperature and different compositions of catalyst, respectively.
摘要翻译: 它是通过用含分子氧的气体氧化假枯烯来制备偏苯三酸(偏苯三酸,1,2,4-三羧酸)的方法。 更具体地,在氧化催化剂的存在下,通过在乙酸溶剂中引入含分子氧的气体将假枯烯氧化成偏苯三酸,其中分别具有不同温度范围和不同催化剂组成的两个不同阶段的氧化反应。