Fan X, Zhu T L, Wang M Y, Li X M
School of Chemistry and Environment, Beihang University, Beijing 100191, China.
Chemosphere. 2009 Jun;75(10):1301-6. doi: 10.1016/j.chemosphere.2009.03.029. Epub 2009 Apr 16.
The behavior of non-thermal plasma (NTP) and combined plasma catalysis (CPC) was investigated for removal of low-concentration benzene, toluene and p-xylene (BTX mixture) in air using a link tooth wheel-cylinder plasma reactor. Combining NTP with MnO(x)/Al(2)O(3) catalyst after the discharge zone (CPC) significantly promoted BTX conversion and improved the energy efficiency. For a specific input energy (SIE) of 10 JL(-1), the conversion of benzene, toluene and p-xylene reached 94%, 97% and 95%, respectively. The introduction of MnO(x)/Al(2)O(3) catalyst also moved the BTX conversion towards total oxidation and reduced the emission of O(3) and NO(2) as compared to NTP alone. For an SIE of 10 JL(-1), the O(3) outlet concentration decreased from 46.7 for NTP alone to 1.9 ppm for CPC, while the NO(2) emission correspondingly decreased from 1380 to 40 ppb.
使用链齿圆柱等离子体反应器，研究了非热等离子体（NTP）及联合等离子体催化（CPC）去除空气中低浓度苯、甲苯和对二甲苯（BTX混合物）的行为。在放电区之后将NTP与MnO(x)/Al(2)O(3)催化剂相结合（CPC）显著促进了BTX的转化并提高了能量效率。对于10 JL(-1)的特定输入能量（SIE），苯、甲苯和对二甲苯的转化率分别达到94%、97%和95%。与单独的NTP相比，MnO(x)/Al(2)O(3)催化剂的引入还使BTX转化趋向于完全氧化，并减少了O(3)和NO(2)的排放。对于10 JL(-1)的SIE，O(3)出口浓度从单独NTP时的46.7 ppm降至CPC时的1.9 ppm，而NO(2)排放相应地从1380 ppb降至40 ppb。
