| SiO2-TiO2复合催化剂降解水体中的邻苯二甲酸二甲酯 |
| |
| 引用本文： | 景伟文,刘义轩,张欣茜. SiO2-TiO2复合催化剂降解水体中的邻苯二甲酸二甲酯[J]. 新疆农业大学学报, 2012, 35(1): 70-74 |
| |
| 作者姓名： | 景伟文 刘义轩 张欣茜 |
| |
| 作者单位： | 新疆农业大学化学工程学院,乌鲁木齐,830052 |
| |
| 基金项目： | 新疆维吾尔自治区高校科研计划青年教师科研启动基金(XJEDU2009S40);大学生创新基金 |
| |
| 摘 要： | 通过湿式机械混合法制备SiO2复合改性TiO2催化剂,光催化降解邻苯二甲酸酯实验的结果表明,复合比例为SiO2 ∶TiO2=1∶6～1∶9,焙烧活化600℃,2h所得的催化剂活性较好.对降解体系的研究表明,当催化剂的投加量为0.2～0.3 g/L、pH=5～8时降解效率较高.邻苯二甲酸酯的初始浓度越高,SiO2-TiO2复合催化剂的降解效率则越低.并利用Langmuir- Hinshelwood动力学方程对表观反应速率常数(kapp)和半衰期(t1/2)进行了计算.
|
| 关 键 词： | SiO2-TiO2复合催化剂 光降解 邻苯二甲酸二甲酯 |
Degradation of Dimethyl Phthalate (DMP) in Aqueous Solution by SiO2-TiO2 Composite Photocatalyst |
| |
| JING Wei-wen , LIU Yi-xuan , ZHANG Xin-qian. Degradation of Dimethyl Phthalate (DMP) in Aqueous Solution by SiO2-TiO2 Composite Photocatalyst[J]. Journal of Xinjiang Agricultural University, 2012, 35(1): 70-74 |
| |
| Authors: | JING Wei-wen LIU Yi-xuan ZHANG Xin-qian |
| |
| Affiliation: | (College of Chemical Engineering,Xinjiang Agricultural University,Urumqi 830052,China) |
| |
| Abstract: | This experiment was conducted to prepare SiO2-TiO2 composite photocatalyst by damp mechanical mixed method.The result of the experiment for photocatalytic degradative dimethylphthalate indicated that the composite ratio of SiO2 to TiO2 SiO2∶TiO2=1∶6~1∶9,the cativity of photocatalyst was higher under calcination activating treatment with 600 ℃ for 2 h.The study of degradation system showed that when the amount of catalyst was 0.2~0.3 g/L,solution pH value was 5~8,the degradation rate of solution can be higher.DMP photocatalytic degradation decreased with the increase of initial DMP concentration.Finally,the apparent rate constants(kapp) and half-life(t1/2)were calculated by Langmuir-Hinshelwood dynamics equation. |
| |
| Keywords: | SiO2-TiO2 composite photocatalyst photodegradation Dimethyl Phthalate(DMP) |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
