Characteristics of MnO2 catalytic ozonation of sulfosalicylic acid and propionic acid in water.
The characteristics of different types of MnO(2) catalytic ozonation of sulfosalicylic acid (SSal) and propionic acid (PPA) have been investigated in this paper. The experimental results show the dependence of catalytic activity of MnO(2) on organic compounds and the pH of solutions, but it is independent on the type of MnO(2). For example, three types of MnO(2) have not any catalytic activity when ozonation of PPA under the condition of this experiment. All MnO(2) catalytic ozonation of SSal at pH=1.0 have a greater total organic carbon removal than ozonation alone has, however, at pH=6.8 and 8.5, catalytic efficiency is not observed. Furthermore, the batch experimental results indicate that there are no direct relationship between the activity of metal oxide catalytic decomposition of ozone and that of its catalytic degradation of organic compounds.
Tong
Shao-ping
SP
Institute of Environmental Science, Huajuachi Campus, Zhejiang University, Hangzhou 310029, China. sptong@cers.zju.edu.cn
Liu
Wei-ping
WP
Leng
Wen-hua
WH
Zhang
Qian-qing
QQ
D001557:Benzenesulfonates; D002384:Catalysis; D017895:Manganese Compounds / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D011422:Propionates / Q000737:chemistry*; D012459:Salicylates / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
D001557:Benzenesulfonates; D017895:Manganese Compounds; D010087:Oxides; D011422:Propionates; D012459:Salicylates; D014867:Water; C027424:manganese oxide; D010126:Ozone; C029658:propionic acid; C003366:sulfosalicylic acid