硝基苯废水的催化超临界水氧化分解的实验研究  

Decomposition of nitrobenzene wastewater by catalytic supercritical water oxidation

作　　者：陈鸿章[1] 陈晋阳[2] 

机构地区：[1]福建省湄洲湾职业技术学院化学工程系,福建莆田351254 [2]上海大学环境与化工学院,上海201800

出　　处：《化学工程师》2008年第9期15-17,共3页Chemical Engineer

基　　金：国家自然科学基金项目(20777048)资助

摘　　要：采用V2O5作为催化剂,以过量的H2O2作为氧化剂进行了380、400、420℃3个温度的超临界水氧化分解处理硝基苯的实验研究。随着温度升高,硝基苯和COD去除率速度快速增加,在420℃时只需45min,硝基苯和COD的去除率都可达到99%以上。而380、400℃时使硝基苯和COD去除率达到99%,所需时间分别为90和75min。在硝基苯的氧化分解历程中,其主要经历了先被氧化分解为苯的中间过程,然后再被完全氧化为CO2和H2O。Nitrobenzene is decomposed by V2O5 catalytic supercritical water oxidation with excess H2O2 oxidant under 380,400 and 420℃. With increasing temperature, decomposition of nitrobenzene and COD increases. At the temperature of 420℃, it is only 45min to obtain 99% decomposition of nitrobenzene and COD, whereas, as for the temperatures of 380 and 400℃, they need 90 and 75 min respectively. The possible main mechanism of nitrobenzene decomposition has transition of benzene, and then benzene is decomposed to CO2 and H2O.

关 键 词：超临界水氧化 硝基苯 催化 分解 

分 类 号：TQ246.1[化学工程—有机化工]