对硝基甲苯邻磺酸氧化反应的动力学研究  

STUDY ON KINETICS OF 4-NITROTOLUENE-2-SULFONIC ACID OXIDATION REACTION

作　　者：金发根[1] 王琪[2] 

机构地区：[1]浙江师范大学生命与环境科学学院,金华321004 [2]杭州商学院食品科学,生物工艺与环境工程系,杭州310035

出　　处：《精细石油化工》2004年第2期17-19,共3页Speciality Petrochemicals

基　　金：浙江省教委基金资助项目(951089)

摘　　要：研究了在碱性介质中,以硫酸锰为催化剂,用空气氧化对硝基甲苯邻磺酸(PNTS)的反应过程。结果表 明该反应过程是:首先由PNTS生成中间产物4,4′ 二硝基 2,2′ 联苄基二磺酸(NDS),然后进一步氧化生成 4,4′ 二硝基二苯乙烯 2,2′ 二磺酸(DNS)。对此两步反应的动力学方程分别进行了描述并求出了k1和k2 值:V1=-d[PNTS]/dt=k1[PNTS][OH-]2;V2=-d[NDS]/dt=k2[NDS][OH-].The reaction kinetics of 4-nitrotoluene-2-sulfonic acid(PNTS) oxidized by air with manganous sulfate as catalyst under alkaline condition were studied. The results showed that it is composed of consecutive 2 steps, i.e. firstly PNTS was converted into 4,4′-dinitro-2,2′-dibenzyldisulfonic acid(NDS), and then NDS was converted into 4,4′-dinitro-2,2′-stilbenedisulfonic acid(DNS). The kinetic equations for these 2 step reactions could be described respectively as follows: PNTSk 1NDSk 2DNS, the k 1,k 2 values were obtained: V 1 =-d/d t = k 1 2; V 2 =-d/d t = k 2.

关 键 词：对硝基甲苯邻磺酸 动力学研究 氧化反应 二硝基二苯乙烯 反应过程 动力学方程 碱性介质 空气氧化 中间产物 PNTS 一步氧化 两步反应 二磺酸 催化剂 硫酸锰 苄基 

分 类 号：TQ247.51[化学工程—有机化工] TS221[轻工技术与工程—粮食、油脂及植物蛋白工程]