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CuO/γ-Al2O3催化湿式过氧化水溶液中苯酚

孔黎明,刘晓勤   

  1. 南京工业大学化学化工学院; 扬州大学化学化工学院
  • 出版日期:2006-10-25 发布日期:2006-10-25

CuO/γ-Al2O3 as catalyst for catalytic wet hydrogen peroxide oxidation of phenol in aqueous solution

KONG Liming,LIU Xiaoqin   

  1. College of Chemistry and Chemical Engineering,Nanjing University of Technology;
    College of Chemistry and Chemical Engineering,Yangzhou University
  • Online:2006-10-25 Published:2006-10-25

摘要: 研究了以CuO/γ-Al2O3为催化剂、H2O2为氧化剂的催化湿式过氧化技术对苯酚的降解效果,主要考察了H2O2含量、处理温度对苯酚去除率及TOC去除率的影响。结果表明:苯酚去除率及TOC去除率均随着H2O2含量的增加及处理温度的升高而增大;在苯酚初始浓度为200 mg/L、H2O2的初始含量为600 mg/L、pH值为5.0、处理温度为50 ℃时,处理2.0 h后苯酚去除率达到100%,TOC去除率可达到96.6%。ICP分析表明,溶液中Cu2+浓度随着H2O2含量和处理温度有微小的增大,结合HPLC分析可能是由于苯酚降解过程中产生的羧酸与CuO发生了反应。

Abstract: A catalyst based on CuO/γ-Al2O3 and H2O2 as oxidant for the catalytic wet hydrogen peroxide oxidation of phenol in aqueous solution was investigated. The effect of H2O2 concentration and temperature on phenol removal rate and total organic carbon (TOC) removal rate was studied. The results showed that the phenol removal rate and TOC removal rate increased with increasing H2O2 initial concentration and temperature. Under the conditions of phenol initial concentration 200 mg/L,H2O2 concentration 600 mg/L and pH 5.0,phenol removal rate reached 100% and TOC removal rate reached 96.6% at 50 ℃ after treatment for 120 min. The Cu2+ concentration increased slightly with increasing H2O2 concentration and temperature,which might be the results of CuO reacting with the carboxylic acid from phenol degradation as shown by HPLC analysis.

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