邻二甲苯空气液相氧化制取邻甲基苯甲酸  

Liquid Phase Oxidation of o Xylene by Air to o Methyl Benzoic Acid

作　　者：都国华 骆晓玲[2] 

机构地区：[1]大庆天然气公司科研所 [2]大庆石油化工设计院

出　　处：《石油化工》1998年第2期82-85,共4页Petrochemical Technology

摘　　要：探索了用环烷酸钴为催化剂，用空气直接氧化邻二甲苯制取邻甲基苯甲酸的过程及基本反应原理。试验为ｋｇ级工业模拟中试试验，反应为间歇式反应，原料邻二甲苯一次投料量为４．２ｋｇ，目的产物为邻甲基苯甲酸，单程收率可达４７％，总收率可达６２．３６％。采用正交设计法试验，筛选出了工艺过程的最佳操作条件：温度１３０℃，压力０．３ＭＰａ，空气流量０．８ｍ３／ｈ，反应时间６ｈ。The process of liquid phase oxidation of o xylene by air to produce o methyl benzoic acid using cobalt naphthenate as catalyst has been investigated on a kilogram level industrial simulative medium scale unit.The reaction was intermittent.The yield per pass of o methyl benzoic acid is up to 47% with a total yield of up to 62 36%.The optimum operation conditions were found to be temperature 130℃,pressure 0 3MPa,air flow rate 0 8m 3/h,and reaction time 6h.

关 键 词：邻甲基苯甲酸 空气液相氧化 邻二甲苯 

分 类 号：TQ245.12[化学工程—有机化工]