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| 低温等离子体与催化剂联用降解空气中低浓度的苯 | |
| 引用本文： | 李党生,冯涛,姚水良.低温等离子体与催化剂联用降解空气中低浓度的苯[J].环境科学与技术,2007,30(10):65-66. |
| 作者姓名： | 李党生 冯涛 姚水良 |
| 作者单位： | 1. 黄河水利职业技术学院,开封,475001 2. 黄河水利职业技术学院,开封,475001;天津大学环境科学与工程学院,天津,300072 3. 天津大学环境科学与工程学院,天津,300072 |
| 基金项目： | 面向21世纪教育振兴行动计划(985计划) |
| 摘 要： | 采用介质阻挡放电(DBD)与催化剂(MnO2,TiO2)联用降解空气中低浓度的苯(C6H6)。考察了苯的转化率、产物选择性、能量效率随能量密度的变化关系。研究发现,苯的转化率随能量密度的增加而增加,当注入DBD反应器的能量密度为1200J/L时,等离子体协同催化剂MnO2氧化苯的转化率达到了92%。苯的氧化产物为一氧化碳(CO)和二氧化碳(CO2),进而阐述了其氧化机理。当能量密度为430J/L时,在催化剂MnO2,TiO2存在的条件下,能量效率分别达到了0.062与0.043mol/kWh。 |
| 关 键 词： | 低温等离子体 介质阻挡放电 能量密度 能量效率 |
| 文章编号： | 1003-6504（2007）10-0065-02 |
| 修稿时间： | 2007-02-07 |
Decomposition of Low Concentration Benzene in Air by Non-thermal Plasma with Catalyst |
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| LI Dang-sheng,FENG Tao,YAO Shui-liang.Decomposition of Low Concentration Benzene in Air by Non-thermal Plasma with Catalyst[J].Environmental Science and Technology,2007,30(10):65-66. | |
| Authors: | LI Dang-sheng FENG Tao YAO Shui-liang |
| Abstract: | Plasma oxidation of low concentration benzene (C6H6) in oxygen and nitrogen was investigated using a dielectric barrier discharge (DBD) reactor with MnO2 or TiO2 at atmospheric pressure. A relationship between benzene conversion or products selectivity or energy efficiency and energy density was studied. Results showed that the conversion of C6H6 increased with the increase in energy density. At energy density of 1,200J/L,C6H6 conversion was as high as 92% with MnO2. The carbon products from C6H6 oxidation in plasma discharges were found to be CO and CO2. Benzene oxidation mechanism was described. Energy efficiency at an energy density of 430J/L was about 0.062 and 0.043 mol/kWh with MnO2 and TiO2 respectively. |
| Keywords: | non-thermal plasma dielectric barrier discharge (DBD) energy density energy efficiency |
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