氧气液相氧化对硝基甲苯制取对硝基苯甲酸反应机理的研究  

Studies on the Mechanisms of Oxidation of p-Nitrotoluene to p-Nitrobenzoic Acid with Dioxygen in Liquid-Phase

作　　者：余远斌[1] 张淑芬[2] 杨锦宗[2] 

机构地区：[1]北京工业大学化学与环境工程学系,北京100022 [2]大连理工大学精细化工国家重点实验室,大连116012

出　　处：《北京工业大学学报》1999年第1期27-34,共8页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助

摘　　要：研究并提出了对硝基甲苯首先在强碱的作用下发生阴离子化生成对硝基苯甲基阴离 子，再经金属酞菁催化剂活化的分子氧氧化，并通过一系列自由基反应最终生成对硝基苯甲酸 的反应机理.通过对金属酞菁催化剂催化作用和ＮａＯＨ助催化作用的研究，结合其他实验结果 间接地证实了对硝基苯甲基阴离子等重要中间体的存在，从而间接地证实了所提出的反应机理．The mechamisms of oxidation of p-nitrotoluene to p-nitrobenzoic acid with dioxygen in NaOH-CW3OH solution were proposed and investigated. It was hypothesized that reaction mechamsms were that p-nitrotoluene firstly formed p-nitrobenzyl anions as a result of the action of strong alkali NaOH and anions formed were oxidized by dioxygen activated by metal phthalocyanine catalysts to form p-nitrobenzyl acid through a series of free radical reactions. By studying the catalytic action of metal phthalocyanine catalysts and the cocatalytic action of NaOH and combining them with other experimental results, the impontant intermediates such as p-nitrobenzyl anions et al. were indirectly proved, and the mechanisms hypothesized were also indirectly confirmed.

关 键 词：对硝基甲苯 对硝基苯甲酸 氧气 液相氧化 

分 类 号：O625.615[理学—有机化学]