Fe2O3/CNT催化湿法H2O2氧化苯酚

通过化学沉积法和热处理得到多壁碳纳米管负载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催化湿式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初始浓度分别为350和1 500 mg/L、催化剂投加量为1.0 g/L、温度80 ℃条件下，经过240 min的反应，苯酚去除率达100％，COD去除率为86.1％。

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

Multi-welled carbon nanotube supported iron oxide(Fe_2O_3/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 (α-type and γ-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.