摘要
进行了以自制锐钛型Fe3+-TiO2催化降解甲苯的研究,在自制的光催化反应器中,室温下以40 W白炽灯为光源,分析了TiO2的掺Fe3+量、催化剂投放量、甲苯初始浓度和溶液初始pH等因素的影响。结果表明:自制锐钛型Fe3+-TiO2能较有效地催化降解甲苯。在pH为2,TiO2掺Fe3+量为5%(物质的量分数)、催化剂投放量为2.0 g/L时对1.2 g/L甲苯的去除率在5 h内可达60%以上。甲苯的降解过程表现为一级反应,表观反应速率常数k为0.066 6 h-1,反应可用Langmuir-Hinshelwood动力学方程描述。
Degradation of toluene by anatase Fe^3＋-TiO2 was investigated. The effects of Fe3~ -doping dose, initial concentration of toluene and initial pH value on the degradation of toluene irradiated by 40 W filament lamp at room temperature were examined. The results show that the degradation of toluene occurred with low dose of Fe^3＋ -TiO2. The removal of 1.2 g/L toluene can be over 60% at pH 2 with 5% amount of Fe^3＋ -doped （mole fraction） and quantity 2.0 g/L for 5 h. The degradation process of toluene followed the first-order reaction and the degradation observed rate constant k is 0. 066 6 h^- 1, the degradation reaction could be described by the Langmuir-Hinshelwood kinetic equation.
出处
《化学试剂》
CAS
CSCD
北大核心
2012年第12期1079-1082,共4页
Chemical Reagents
基金
教育部第四批高等学校特色专业建设点资助项目(TS11524)
江西省高校教学团队资助项目(赣教高字[2008]100)
