催化加氢法合成2,2’-二氯亚肼苯  

SYNTHESIS OF 2,2'-DICHLOROHYDRAZOBENZENE BY CATALYTIC HYDROGENATION

作　　者：闫茂文[1] 陈宏博[1] 贡振波[1] 李树德[1] 

机构地区：[1]大连理工大学化工学院,辽宁大连116024

出　　处：《精细石油化工》2005年第3期50-52,共3页Speciality Petrochemicals

基　　金：国家自然科学基金(29776007)

摘　　要：以甲苯为溶剂,w(Pd)=0.8%的 Pd/C 为催化剂,NQON 为助剂,在碱性条件下,对邻氯硝基苯选择性加氢还原制备2,2′-二氯亚肼苯(DHB)进行了研究。较佳的反应条件为:w(NaOH)=20%,反应温度65℃,十二烷基苯磺酸钠用量0.4 g,0.8%Pd/C 用量1.2 g,助剂用量0.08 g,产物质量分数大于95%。The synthetic process of 2,2'-dichlorohydrazobenzene(DHB)from o-nitrochlorobenzene by selective hydrogenation in basic medium using 0.8%Pd/C as catalyst,NQON as promoter and toluene as solvent was studied.The optimum conditions were found as follows:w(NaOH)=20%,reaction temperature 65℃,m(sodium dodecylhenzene sulfonate)=0.4g,m(0.8%Pd/C)=1.2g,m(NQO- N)=0.08g,the mass fraction of DHB in the product is above 95%.

关 键 词：催化加氢法 十二烷基苯磺酸钠 合成 肼 PD/C 选择性加氢 邻氯硝基苯 碱性条件 还原制备 反应条件 反应温度 助剂用量 质量分数 催化剂 溶剂 甲苯 产物 

分 类 号：TQ246.34[化学工程—有机化工] X703.1[环境科学与工程—环境工程]