用于二乙醇胺催化氧化脱氢的Cu-ZrO_2催化剂的制备与表征  

Preparation and Characterization of Cu-ZrO_2 Catalyst for Catalytic Oxidative Dehydrogenation of Diethanolamine

作　　者：段正康[1] 杨运泉[1] 熊鹰[1] 刘文英[1] 李国龙[1] 

机构地区：[1]湘潭大学化工学院,湖南湘潭411105

出　　处：《精细化工》2002年第7期412-414,417,共4页Fine Chemicals

基　　金：湖南省教育厅青年项目资助课题 ( 0 1B0 0 4);湖南省自然科学基金资助课题 ( 0 1JJY2 0 10 )

摘　　要：采用共沉淀法制备了二乙醇胺催化氧化脱氢生产亚氨基二乙酸二钠盐用的Cu -ZrO2 催化剂。考察了不同制备条件对催化剂催化氧化反应性能和催化剂结构的影响。实验结果表明 ,催化剂中和终止 pH值、Cu与Zr原子的量比以及焙烧温度是影响催化剂性能的主要因素。经TG、XRD和外观分析 ,优质催化剂其中间体铜锆氢氧化物外观呈现亮而脆的绿色、密度大于1 72g/cm3 、热失重温度范围为 15 0～ 5 30℃ 。A Cu-ZrO 2 catalyst for synthetizing iminodiacetic acid disodium salt from diethanolamine is prepared by coprecipitation method.Effects of preparation conditions on the catalytic oxidation performance and catalyst structure of Cu-ZrO 2 catalyst are studied.The experimental results show that the catalytic property is mainly influenced by the final pH value of solution in neutralization,atomic ratio of Cu to Zr and roast temperature.By TG,XRD and appearance analysis,it is found that for fine grade catalyst,the intermediate Cu-Zr hydroxide has bright and fragile green appearance,the density is higher than 1.72 g/cm 3,and the thermal weight loss temperature ranges from 150 ℃ to 530 ℃.Cu-Zr oxide has unitary four side crystal structure.

关 键 词：二乙醇胺 催化氧化脱氢 Cu-ZrO2催化剂 结构 表征 氧化性能 

分 类 号：TQ225.26[化学工程—有机化工] TQ426.94