黄炯, 叶代启, 杨佘维. 介质阻挡放电-催化降解甲苯的研究[J]. 华南师范大学学报(自然科学版), 2016, 48(3): 102-108. doi: 10.6054/j.jscnun.2016.05.020
引用本文: 黄炯, 叶代启, 杨佘维. 介质阻挡放电-催化降解甲苯的研究[J]. 华南师范大学学报(自然科学版), 2016, 48(3): 102-108. doi: 10.6054/j.jscnun.2016.05.020
HUANG Jiong, YE Daiqi, YANG Shewei. Research on Dielectric Barrier Discharge Combined with Catalyst for Toluene Removal[J]. Journal of South China Normal University (Natural Science Edition), 2016, 48(3): 102-108. doi: 10.6054/j.jscnun.2016.05.020
Citation: HUANG Jiong, YE Daiqi, YANG Shewei. Research on Dielectric Barrier Discharge Combined with Catalyst for Toluene Removal[J]. Journal of South China Normal University (Natural Science Edition), 2016, 48(3): 102-108. doi: 10.6054/j.jscnun.2016.05.020

介质阻挡放电-催化降解甲苯的研究

Research on Dielectric Barrier Discharge Combined with Catalyst for Toluene Removal

  • 摘要: 〖JP2〗采用线板式介质阻挡放电结合催化剂去除甲苯,系统研究背景气体、催化剂负载位置、湿度等因素对甲苯去除与出口O3质量浓度的影响. 结果表明,负载催化剂能提高反应器的能量密度. 催化剂置于等离子体区,主要作用是催化含氧物种,实现甲苯的高效去除,〖JP〗同时可降低出口O3质量浓度. 发泡镍后端负载催化剂,比前端负载催化剂的甲苯去除效率高,出口O3质量浓度低. 湿度对等离子体去除甲苯具有双重效应,甲苯的去除效率随着湿度的增加先增大后减少.催化剂置于等离子体区后,可实现甲苯和O3的同时高效去除. 在等离子体催化体系中,甲苯的降解由高能电子和自由基引发,反应的主要产物是CO、CO2和H2O,气相副产物主要有烷烃、酸、醛和含苯环有机物.

     

    Abstract: A wire-plate dielectric barrier discharge combined with catalysts was used to remove toluene. The effects of background gas, loading position of catalysts as well as humidity on the removal of toluene and ozone were investigated. It was found that the energy density was increased with the catalyst in plasma. When the catalyst was placed in plasma, the high removal efficiency of toluene and ozone was realized because of the catalysis of oxygen species. Comparing the catalyst loaded in the back end with the front end, higher toluene removal efficiency and less ozone production was realized. Humidity had both positive and negative influence on the removal of toluene in plasma system. With increase of humidity, the removal efficiency of toluene first increased and then decreased. The toluene and ozone were removed simultaneously with the catalyst in post-plasma. In plasma catalysis system, the decomposition of toluene was initiated by high energy electron and radicals, and the main products were CO, CO2 and H2O, and the by-products were alkanes, acids, aldehyde and benzene-ring organic compounds in gaseous phase.

     

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