Catalytic Decomposition of Chlorophenols Using Fiber-supported Cobalt Phthalocyanine

摘要

A novel heterogeneous catalyst, viscose fiber-supported cobalt phthalocyanine (Co-TDTAPc-F),was prepared by immobilizing cobalt tetra(2,4-dichloro-1,3,5-triazine)aminophthalocyanine (Co-TDTAPc) on viscose fibers covalently. The oxidative removal of chlorophenols such as 2-chlorophenol, 4-chlorophenol, 2,4-dichlorophenol, and 2,4,6-trichlorophenol was investigated in the catalytic oxidative system of Co-TDTAPc-F/H2O2. Furthermore, more than 98% of these chlorophenols were decomposed in 4h. Phenol, oxalic acid, maleic acid, and succinic acid, etc., were detected by high performance liquid chromatography (HPLC) and gas chromatography-mass spectrophotometer (GC-MS), and these short-chain organic acids could be further oxidized easily. The results indicated that the catalytic oxidation in the Co-TDTAPc-F/H2O2 system leaded to a deeper oxidation. In addition, a degradation pathway for chlorophenols was proposed on the basis of detection of intermediate compounds.