液相中MnO_2催化臭氧化降解磺基水杨酸  

PERFORMANCES OF DIFFERENT TYPES OF MnO_2 CATALYTIC OZONATION OF SULFOSALICYLIC ACID IN AQUEOUS SOLUTION

作　　者：童少平[1] 杜桂荣[1] 张鉴清[2] 

机构地区：[1]浙江大学环境科学研究所,杭州310029 [2]浙江大学化学系

出　　处：《环境化学》2003年第5期454-458,共5页Environmental Chemistry

摘　　要：研究了 β MnO2 ,γ MnO2 和由MnSO4产生的胶状MnO2 在液相中催化臭氧化降解磺基水杨酸的催化性能 .结果表明 ,液相中MnO2 催化臭氧化降解磺基水杨酸的活性与体系的pH值有关 ,而与其物相无关 .在本实验条件下 ,三种MnO2 在pH =1 0时均显示了较好的催化臭氧化活性 ,而在pH =6 8和 8 0时却无活性 .实验结果还表明 。The properties of different types of MnO 2 catalytic ozonation of sulfosalicylic acid (SSA) were studied in this paper.The experimental results show that catalytic activity of MnO 2 depended on the pH of solution,but it independed on the type of MnO 2.For example,Three types of MnO 2 catalytic ozonation at pH 1 0 have more SSA removal rate than ozonation only has,however,no catalytic activities are observed both at pH6 8 and 8 0.Furthermore,the results also indicate that activity of catalytic ozonation of organics has no direct relationship with that of its catalytic decomposition of ozone.

关 键 词：液相 MNO2 催化臭氧化 活性 降解 磺基水杨酸 pH值 金属氧化物 

分 类 号：O621[理学—有机化学]