固体酸SO_4^(2-)/TiO_2催化溴氨酸Ullmann缩合反应  

Ullmann Condensation Reaction of Bromamine Acid Using Solid Acid SO_4^(2-)/TiO_2 as Catalyst

作　　者：王镝[1] 费学宁[1] 郝亚超[1] 杨少斌[1] 

机构地区：[1]天津城市建设学院环境与市政工程系,天津300384

出　　处：《天津城市建设学院学报》2009年第2期111-113,共3页Journal of Tianjin Institute of Urban Construction

摘　　要：采用SO42-/TiO2代替传统工艺中的硫酸水溶液,对溴氨酸进行Ullmann缩合反应.考察了反应温度、反应时间、催化剂投加量等因素对反应收率的影响.结果表明:在2.02.g溴氨酸、0.95.g铜粉、80.mL蒸馏水的体系中,SO42-/TiO2用量为1.00.g,在70.℃下反应90.min,溴氨酸缩合产物收率可达91%以上.催化剂可回收,用于光催化氧化溴氨酸缩合反应产生的废水.The catalytic system of sulfuric acid used in Ullmann condensation reaction of bromamine acid is replaced by a solid superacid SO4^2-/TiO2. The effect of the reaction temperature, reaction time and catalyst dosage on the yield of the condensation product is investigated. The results show that in the system of 2.020 g bromamine acid, 0.950 g copper powder and 80 mL H2O, the yield of the condensation product can reach more than 91% in 1.000 g SO4^2-/TiO2 at 70℃ after 90 min. The catalyst can be reused, in the degradation of the wastewater produced in bromamine acid condensation.

关 键 词：固体酸催化 改性TIO2 Ullmann缩合 溴氨酸溶液 降解 

分 类 号：O643.36[理学—物理化学]