Formation efficiency of hydroxyl radical from H2O2 decomposition over Cu/Al2O3 catalyst

TIAN Pengfei; SHENG Yiyi; SUN Yang; DING Doudou; XU Jing; HAN Yifan

doi:10.11949/j.issn.0438-1157.20180532

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Formation efficiency of hydroxyl radical from H₂O₂ decomposition over Cu/Al₂O₃ catalyst

更新时间：2025-12-10

- Formation efficiency of hydroxyl radical from H₂O₂ decomposition over Cu/Al₂O₃ catalyst
- CIESC Journal Issue 11, Pages: 4713-4721(2018)
- 作者机构：
  
  1. 化学工程联合国家重点实验室, 华东理工大学,上海,200237
  2. 郑州大学化工与能源学院,河南,郑州,450001
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180532
  CLC： 643.3
- Online First：05 November 2018，
  
  Published：05 November 2018
- 稿件说明：
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TIAN Pengfei, SHENG Yiyi, SUN Yang, et al. Formation efficiency of hydroxyl radical from H₂O₂ decomposition over Cu/Al₂O₃ catalyst[J]. CIESC Journal, 2018, (11): 4713-4721. DOI: 10.11949/j.issn.0438-1157.20180532.
DOI：

TIAN Pengfei, SHENG Yiyi, SUN Yang, et al. Formation efficiency of hydroxyl radical from H₂O₂ decomposition over Cu/Al₂O₃ catalyst[J]. CIESC Journal, 2018, (11): 4713-4721. DOI: 10.11949/j.issn.0438-1157.20180532. DOI：

摘要

非均相Fenton催化反应是降解废水中有机污染物的有效方法。提高H2O2分解生成羟基自由基（·OH）的利用率是提升废水处理效率、降低成本的关键。使用溶胶-凝胶法制备了Cu/Al2O3催化剂，基于·OH的生成效率，通过单因素实验发现反应温度、反应溶液pH及H2O2初始浓度是决定H2O2利用率的主要因素。通过响应面法进行实验设计，分析响应面方程，考察了H2O2初始浓度、溶液pH及反应温度三个因素之间的交互作用及其对反应过程的影响。以H2O2利用率的最大化为目标优化反应条件，当H2O2初始浓度、溶液pH及反应温度分别为707 mg·L-1、5.12及59.4℃时，H2O2利用率可高达0.57，与实验结果相对误差仅为3.5%。所得结果对降低废水处理成本、提高降解效率具有重要的指导作用。

Abstract

Heterogeneous Fenton reaction is an effective method for the degradation of organic pollutants in the waste water. The improvement of H2O2 utilization efficiency for hydroxyl (·OH) production is the primary challenge to enhance the efficiency and reduce the cost for waste water degradation. Cu/Al2O3 catalysts were prepared through a sol-gel method. Based on the formation efficiency of ·OH

the reaction temperature

the pH of the reaction solution and the initial concentration of H2O2 were the main factors determining the utilization of H2O2 by single factor experiments. Through the design of experiments via response surface methodology and the analysis of the regression equation

the influence of three independent variables

initial H2O2 concentration

pH and reaction temperature

and their interactions on H2O2 utilization efficiency was evaluated. To achieve the highest H2O2 utilization efficiency

the optimum parameters were determined as 707 mg·L-1 of H2O2 initial concentration

5.12 of pH and 59.4℃ of reaction temperature. The corresponding H2O2 utilization efficiency is 0.57 and the relative error is only 3.5% compared with experimental value

suggesting that response surface methodology can provide important guidance on reducing cost and improving efficiency for waste water treatment.

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