文献类型：期刊文献

中文题名：Cu/Al2O3催化剂用于H2O2分解生成羟基自由基的效率

英文题名：Formation efficiency of hydroxyl radical from H_2O_2 decomposition over Cu/Al_2O_3 catalyst

作者：田鹏飞[1];盛依依[1];孙杨[1];丁豆豆[1];徐晶[1];韩一帆[1,2]

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

年份：2018

卷号：69

期号：11

起止页码：4713

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20191006589297);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：国家自然科学基金项目(21808057,91534127);国家重点研发计划项目(2018YFB0604500)。

语种：中文

中文关键词：Fenton反应;废水;催化剂;响应面法;双氧水利用率;自由基

外文关键词：Fenton reaction;waste water;catalyst;response surface methodology;hydrogenperoxide utilization efficiency;radical

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H_2O_2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/Al_2O_3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H_2O_2初始浓度是决定H_2O_2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H_2O_2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H_2O_2利用率的最大化为目标优化反应条件,当H_2O_2初始浓度、溶液pH及反应温度分别为707mg·L^(-1)、5.12及59.4℃时,H_2O_2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。
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.