硫催化CO/H_2O选择性还原间二硝基苯制间硝基苯胺  

Sulfur-Catalyzed Reduction of m-Dinitrobenzene to m-Nitroaniline with Carbon Monoxide and Water

作　　者：周肖[1] 马玉苗[1] 彭耀丽[2] 蔡可迎[3] 魏贤勇[2] 宗志敏[2] 

机构地区：[1]新疆工业高等专科学校化学工程系,乌鲁木齐830091 [2]中国矿业大学化工学院,徐州221008 [3]徐州工程学院化学化工学院,徐州221008

出　　处：《精细石油化工进展》2010年第7期47-50,共4页Advances in Fine Petrochemicals

摘　　要：介绍了硫作为催化剂,NaOH为助剂,用CO/H_2O部分还原间二硝基苯(m-DNB)制备间硝基苯胺(m-NA)的方法。考察了反应温度、CO初压、反应时间、硫用量、NaOH用量和溶剂品种等因素对反应的影响。结果表明,以四氢呋喃(THF)作为溶剂,溶剂用量8 mL,2.5 mmolm-DNB、0.02 g硫粉、0.05 g NaOH和2 mL水在180 ℃和CO初压为6 MPa的条件下反应4 h,m-NA的选择性为100%,m-DNB的转化率93.97%,m-NA收率也为93.97%。Sulfur - catalyzed reduction of m - dinitrobenzene （ m - DNB ） to m - nitroaniline （ m - NA ） by CO/H20 with NaOH as a co - catalyst was studied. The effects of reacction conditions such as reaction temperature, reaction time, initial pressure of carbon monoxide, and the amount of sulfur, NaOH, water and solvent on the m -DNB conversion, m -NA selectivity and m -NA yield were investigated. The results showed that when the reaction was carried out under the following reaction conditios： reaction temperature 180 ℃, initial pressure of CO 6 MPa, reation time 4 hours, the amount of m - DNB, sulfur, NaOH, and water 2.5 mmol,0.02 g, 0.05 g and 2 mL respectively using THF as solvent, m -NA selectivity could reach 100% and both of m - DNB conversion and m - NA selectivity reached 93.97%.

关 键 词：硫 还原 间二硝基苯 间硝基苯胺 CO/H2O 

分 类 号：TQ246.38[化学工程—有机化工]