催化加氫法制備4,4′-二氨基二苯乙烯-2,2′-二磺酸

催化加氫法制備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： 趙曉波 陳宏博 張淑芬 趙曉波 陳宏博 張淑芬   作者單位： College of Chemical Engineering,Dalian University of Technology,Dalian 116012,Liaoning,China  刊 名： 化工學報  ISTIC EI PKU 英文刊名： JOURNAL OF CHEMICAL INDUSTRY AND ENGINEERING(CHINA)  年，卷(期)： 2003 54(9)  分類號： O625  關鍵詞： 4,4′-diaminostilbene-2,2′-disulfonic acid,catalytic hydrogenation,selectivity  

【催化加氫法制備4,4′-二氨基二苯乙烯-2,2′-二磺酸】相關文章：

鄰(對)硝基甲苯加氫還原催化劑的制備催化性能04-27

相轉移催化法合成對苯二酚二(ω-氯代二甘醇)醚04-27

硫化物對Pd/樹脂催化劑上異戊二烯選擇加氫催化性能的影響04-27

聚苯乙烯磺酸摻雜聚苯胺/蒙脫土復合材料的制備與表征04-26

納米二氧化鈦的制備及其光催化性能研究04-25

催化濕式二氧化氯氧化法的研究04-26

金屬絲網負載納米二氧化鈦薄膜的制備及催化實驗04-27

微電解-催化氧化-吸附法處理二硝基苯廢水04-27

LCT和GCT聯合鑒別未知水樣中N,N-二烷基氨基乙基磺酸及其類似物04-25

噻吩加氫脫硫和四氫萘催化加氫反應中載體和助劑的影響04-26