Fe_2O_3/CNT催化湿法H_2O_2氧化苯酚  

Catalytic Wet Peroxide Oxidation of Phenol over Iron Oxide on Carbon Nanotube

作　　者：赵松林[1] 梁华定[1] 琚晓敏[1] 

机构地区：[1]台州学院医药化工学院,台州317000

出　　处：《应用化学》2010年第2期197-200,共4页Chinese Journal of Applied Chemistry

基　　金：浙江省自然科学基金资助项目(Y405377)

摘　　要：通过化学沉积法和热处理得到多壁碳纳米管(CNT)负载Fe2O3催化剂Fe2O3/CNT,Fe2O3的负载质量分数约为15.1%,XRD表征显示,负载的Fe2O3存在α-和γ-这2种晶型。考察了Fe2O3/CNT催化湿法H2O2氧化去除废水中苯酚催化性能,通过苯酚的去除率及反应过程中催化剂活性组分的溶出总量,研究了催化剂制备过程中添加聚乙烯醇对催化剂性能的影响。在苯酚和H2O2初始质量浓度分别为350和1500mg/L、催化剂投加量为1.0g/L、温度80℃条件下,经过240min的反应,苯酚去除率达100%,COD去除率为86.1%。Multi-welled carbon nanotube supported iron oxide（ Fe2O3/CNT） as catalyst for the oxidation of phenol in waste water by hydrogen peroxide was studied. The catalysts samples was synthesized by a chemical precipitation in the presence or absence of polyvinyl alcohol（PVA） and followed by a heat treatment. X-ray diffraction（ XRD ） result revealed two crystalline （a-type and y-type ） iron oxide were presented in the catalyst. The content of the active metal oxide component on the CNT was about 15.1%. The catalytic performance were carried out in a glass vessel in a batch operation mode at atmospheric pressure and temperature ranging from 50℃ to 90 ℃. At a temperature of 80℃, initial phenol concentration of 350 mg/L, hydrogen peroxide 1 500 mg/L and catalysts 1.0 g/L, the phenol conversion and the COD removal rate of the water were 100% and 86. 1%, respectively, after 240 min oxidation. The influence of using PVA in the process of catalysts preparation on their catalytic performance was discussed.

关 键 词：多壁碳纳米管 氧化铁 催化湿法氧化 过氧化氢 苯酚 

分 类 号：O643.3[理学—物理化学]