【摘要】 以Al2O3和Ag/Al2O3为催化剂,采用介质阻挡放电(DBD)反应器降解空气中低浓度的苯(C6H6),重点考察了苯的转化率、能量效率随能量密度的变化关系。研究发现:苯的氧化产物为一氧化碳(CO)和二氧化碳(CO2),当能量密度为94 J/L时,在催化剂Ag/Al2O3、Al2O3存在以及不使用催化剂的条件下,苯的能量效率分别达到了0.054 mol/kW.h、0.038 mol/kW.h与0.024 mol/kW.h。同时,探讨了国外应用低温等离子体技术处理气体污染物的相关研究成果,并与本研究做了比较。更多还原

【Abstract】 Plasma oxidation of benzene(C6H6) in oxygen and nitrogen was investigated using the dielectric barrier discharge(DBD) reactor with Al2O3 or Ag/Al2O3 at atmospheric pressure.The relationship of benzene conversion or energy efficiency as a function of energy density was studied.The obtained results showed that C6H6 was oxidized to carbon monoxide(CO) and dioxide(CO2).Furthermore,benzene oxidation mechanism was mentioned.Typically,the energy efficiency at an energy density of 92 J/L was about 0.054,0.038,and 0.024 mol/kWh respectively when there was the occurrence of Ag/Al2O3 and Al2O3 and when there was no occurrence of Ag/Al2O3 and Al2O3.At last,the comparison between our study and obtained results from foreign countries’ research for the treatment of air pollutants using non-thermal plasma technology was given.更多还原