Catalytic action of goethite in the oxidation of 2-chlorophenols with hydrogen peroxide.
The use of goethite and hydrogen peroxide was recently found to effectively oxidise organic compounds. This research was to investigate the effect of adsorption, pH, Fe2+ and Fe3+ on 2-CP oxidation. Results indicated that 2-CP can be decomposed with hydrogen peroxide catalysed by goethite and the oxidation rate increased with decreasing goethite particle size. The optimum oxidation rate was observed at the pH below 3.0. Addition of Fe2+ and Fe3+ can enhance the catalytic oxidation rate of 2-CP very efficiently. The main mechanism of goethite catalysing hydrogen peroxide to oxidise 2-CP may be due to the catalysis of ferrous ions and goethite surface.
National Chung-Hsing University, 250 Kuo Juang Rd. Taichung 402, Chinese Taiwan. yaotung@nchu.edu.tw
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D000327:Adsorption; D002384:Catalysis; D002733:Chlorophenols / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D058085:Iron Compounds / Q000737:chemistry*; D008903:Minerals; D010084:Oxidation-Reduction; D010316:Particle Size; D012996:Solutions
D002733:Chlorophenols; D058085:Iron Compounds; D008903:Minerals; D012996:Solutions; C094886:goethite; D006861:Hydrogen Peroxide