碘化钾对Pd/C催化加氢制备4,4′-二氨基二苯乙烯-2,2′-二磺酸反应的影响  

PREPARATION OF 4,4'-DIAMINOSTILBENE-2,2'-DISULFONICACID BY PALLADIUMCARBON CATALYTIC HYDROGENATION

作　　者：陈宏博[1] 赵晓波[1] 张淑芬[1] 鲁薇薇[1] 熊芳[1] 

机构地区：[1]大连理工大学化工学院,大连116012

出　　处：《精细石油化工》2004年第4期13-15,共3页Speciality Petrochemicals

基　　金：国家自然科学基全(No.29776007)

摘　　要：以Pd/C为催化剂,碘化钾(KI)为助催化剂,研究了液相催化加氢法还原4,4'-二硝基二苯乙烯-2,2'-二磺酸制备4,4'-二氨基二苯乙烯-2,2'-二磺酸.结果表明,当KI用量为原料质量的0.4%时,可显著提高催化加氢反应的选择性,制得产物的纯度(质量分数)为99.4%,收率可达97.4%.产物用元素分析、IR、1H NMR 和MS进行了鉴定.Preparation of 4,4'-diaminostilbene-2,2'-disulfonic acid (DSD acid) via reduction of 4,4'-dinitrostilbene-2,2'-disulfonic acid (DNS) was studied with the liquid-phase catalytic hydrogenation method using palladium-carbon as catalyst and KI as assistant-catalyst. The results showed that when mass ratio of KI to DNS is 0.4%, the selectivity of the hydrogenation could be enhanced obviously and the purity of the product could come up to 99.4%, the yield of DSD acid is 97.4%. The product was identified by elemental analysis, IR, ~1H NMR and MS.

关 键 词：PD/C 二磺酸 碘化钾 二氨基 制备 液相催化加氢法 二硝基二苯乙烯 催化加氢反应 助催化剂 原料质量 质量分数 元素分析 ^1H NMR 产物 还原 收率 

分 类 号：TQ245.12[化学工程—有机化工] TQ247.51