介孔钯碳催化液相加氢制备4,4′-二氨基二苯乙烯-2,2′-二磺酸酸  

CATALYTIC HYDROGENATION OF DNS ACID TO DSD ACID OVER MESOPOROUS CARBON SUPPORTED PALLADIUM IN LIQUID PHASE

作　　者：刘明[1] 李明时[1] 鲁墨弘[1] 

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《精细石油化工》2012年第5期21-26,共6页Speciality Petrochemicals

基　　金：国家自然科学基金(20976076);化工资源有效利用国家重点实验室(CRE-2011-C-106);常州市应用基础研究计划(CJ20115004)资助

摘　　要：以介孔碳负载钯(Pd/MC)为催化剂,研究4,4′-二硝基二苯乙烯-2,2′-二磺酸(DNS酸)液相催化加氢制备4,4′-二氨基二苯乙烯-2,2′-二磺酸(DSD酸)反应工艺。结果表明,在蒸馏水为溶剂,催化剂活性组分的负载量为5%,催化剂为原料质量的0.2%,原料质量浓度为175g/L,温度为60℃,压力为1MPa条件下,DNS酸的转化率达100%,DSD酸的纯度为99.46%,收率可达98%以上。The process that preparing 4,4′-diaminostilbene-2,2′-disulfonic acid（DSD acid） via catalytic hydrogenation of 4,4′-dinitrostilbene-2,2′-disulfonic acid（DNS acid） in liquid-phase with palladium-mesoporous carbon（Pd/MC） as catalyst was studied.The results showed that the optimal reaction conditions were as follows by using distilled water as solvent： the charge amount of Pd/MC catalyst was 5%,mass ratio of catalyst to raw material was 0.2%,concentration of raw material was 175 g/L,the reaction temperature was 60 ℃ and the hydrogen pressure was 1 MPa.Under these conditions,the conversion of DNS-Na and the selectivity of DSD were 100% and 99.46% respectively,the yield of DSD acid could be above 98%.

关 键 词：催化加氢 介孔碳钯催化剂 4 4′-二硝基二苯乙烯-2 2′-二磺酸 4 4′-二氨基二苯乙烯-2 2′-二磺酸 

分 类 号：O324[理学—一般力学与力学基础]