硒催化水合肼还原间二硝基苯制间硝基苯胺  

Selenium-Catalyzed Reduction of m-Dinitrobenzene to m-Nitroaniline With Hydrazine Hydrate

作　　者：蔡可迎[1] 周肖[1] 马玉苗[1] 宗志敏[1] 魏贤勇[1] 

机构地区：[1]中国矿业大学化学工程学院

出　　处：《石油化工高等学校学报》2008年第2期41-44,共4页Journal of Petrochemical Universities

基　　金：中国矿业大学碳资源高效利用优秀创新团队建设项目(2004ZCX007-2)

摘　　要：研究了在温和条件下硒催化水合肼还原间二硝基苯(m-DNB)制备间硝基苯胺(m-NA)。考察了溶剂配比、水合肼用量、硒粉用量和NaOH用量等因素对反应的影响。结果表明,在温和条件下,硒对水合肼还原m-DNB制备m-NA有很高的催化活性和选择性。得到较适宜的工艺条件为:V(乙醇)/V(水)=10:1,2mmolm-DNB,3.1mmol水合肼,0.04gNaOH和0.02g硒粉,于75℃反应2h,m-DNB的转化率为100%,m-NA的选择性为98.7%。The reduction of m-Dinitrobenzene （m-DNB） to m-nitroaniline （m-NA） with selenium and hydrazine hydrate was studied under mild conditions. The effects of ratio of solvents, hydrazine hydrate amount, selenium amount and NaOH amount on the reduction of m-DNB to m-NA were investigated. The results show that selenium has high catalytic activity and selectivity for the reduction under mild conditions. Under the optimized conditions of V （ethanol）/V（water） = 10 ： 1, 2 mmol of m-DNB, 3. 1 mmol of hydrazine hydrate, 0. 04 g of NaOH, 0. 02 g of selenium, 75℃ and 2 h, the m-DNB conversion and the m- NA selectivity can reach 100% and 98.7%, respectively.

关 键 词：间硝基苯胺 硒 还原 间二硝基苯 水合肼 

分 类 号：O643.3[理学—物理化学]