摘要
研究了碱浓度对氧气液相氧对硝基甲苯制取对硝基苯甲酸的影响，发现对硝基苯甲酸的收率随着碱浓度的增加而增加，当碱浓度为４．８ｍｏｌ／Ｌ时，以甲醇为溶剂，在５０℃、２．０ＭＰａ氧压下反应１２ｈ可获得８１．１％的对硝基苯甲酸收率，粗品纯度可达９８．０％以上。
The effect of alkali concertrations on the preparation of p-nitrobenzoic acid by oxidation of p-nitrotoluene with dioxygen in liquid phase was ivestigated. As it turned out, the yields of p-nitrobenzoic acid increased with the alkali concentrations increased. p-nitrobenzoic acid in 8.1% yield with a purity more than 98.0% was obtained by using alkali concentration of 4.8 mol/ L and methanol as a solvent at 50 ℃. 2.0Mpa O2 pressure for 12 hrs.
出处
《北京工业大学学报》
CAS
CSCD
1998年第1期45-48,共4页
Journal of Beijing University of Technology
基金
国家自然科学基金
关键词
对硝基苯甲酸
氧气液相氧化
对硝基甲苯
p-nitrobenzoic acid, liquid-phase oxidation with dioxygen, p-nitrotoluene
