液相中MnO2催化臭氧化降解磺基水杨酸

研究了β-MnO2,γ-MnO2和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，催化剂催化分解臭氧活性的高低与其催化臭氧化降解有机物的活性并无直接关系。

PERFORMANCES OF DIFFERENT TYPES OF MnO2 CATALYTIC OZONATION OF SULFOSALICYLIC ACID IN AQUEOUS SOLUTION

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.