催化加氢法制备4,4′-二氨基二苯乙烯-2,2′-二磺酸

催化加氢法制备4,4′-二氨基二苯乙烯-2,2′-二磺酸

INTRODUCTION 4,4′-Diaminostilbene-2,2′-disulfonic acid(DAS) is an important intermediate which is widely used in synthesis of fluorescent whitening agents, direct dyes and reactive dyes[1,2].So far, the conventional procedure using Fe as catalyst for the production of DAS in China is greatly limited, due to industrial waste water, high labor intensity and low production capability. The electrochemical reduction method has been reported[3] overseas, but it is not suitable for China considering its large equipment investment, lower yield and great power consumption. Compared with the methods mentioned above, the catalytic hydrogenation method has attracted a great deal of attention in view of its simple and easy operation, high production capacity and high production efficiency[4-6].The relatively cheap Raney nickel is not used here since it shows a low safety performance in preparing DAS at a high reaction temperature and high pressure. In this paper, highly reactive and recyclable palladium-carbon is chosen as the catalyst. DAS of high purity and high yield is prepared under mild conditions. The catalytic hydrogenation method is a prospective method in producing DAS.

作 者： 赵晓波 陈宏博 张淑芬 赵晓波 陈宏博 张淑芬   作者单位： College of Chemical Engineering,Dalian University of Technology,Dalian 116012,Liaoning,China  刊 名： 化工学报  ISTIC EI PKU 英文刊名： JOURNAL OF CHEMICAL INDUSTRY AND ENGINEERING(CHINA)  年，卷(期)： 2003 54(9)  分类号： O625  关键词： 4,4′-diaminostilbene-2,2′-disulfonic acid,catalytic hydrogenation,selectivity  

【催化加氢法制备4,4′-二氨基二苯乙烯-2,2′-二磺酸】相关文章：

邻(对)硝基甲苯加氢还原催化剂的制备催化性能04-27

相转移催化法合成对苯二酚二(ω-氯代二甘醇)醚04-27

硫化物对Pd/树脂催化剂上异戊二烯选择加氢催化性能的影响04-27

聚苯乙烯磺酸掺杂聚苯胺/蒙脱土复合材料的制备与表征04-26

纳米二氧化钛的制备及其光催化性能研究04-25

催化湿式二氧化氯氧化法的研究04-26

金属丝网负载纳米二氧化钛薄膜的制备及催化实验04-27

微电解-催化氧化-吸附法处理二硝基苯废水04-27

LCT和GCT联合鉴别未知水样中N,N-二烷基氨基乙基磺酸及其类似物04-25

噻吩加氢脱硫和四氢萘催化加氢反应中载体和助剂的影响04-26