Low-Temperature Plasma-Catalytic Reduction of NO_x by C_2H_2 in the Presence of Excess Oxygen  

作　　者：牛金海 张志慧 刘东平 王琪 

机构地区：[1]Institute of Optoelectronic Technology,Dalian Nationalities University,Dalian 116600,China Laboratory of Plasma Physical Chemistry,Dalian University of Technology,Dalian 116024,China [2]Dalian Railway Medical School,Dalian 116001,China [3]Institute of Optoelectronic Technology,Dalian Nationalities University,Dalian 116600,China

出　　处：《Plasma Science and Technology》2008年第4期466-470,共5页等离子体科学和技术（英文版）

基　　金：National Natural Science Foundation of China(No.20077005);Natural Science Foundation of Dalian Nationalities University of China(No.20076205)

摘　　要：Synergistic effects of pulsed DC dielectric barrier discharge （DBD） plasma and Indium modified HZSM-5 （In/HZSM-5） catalyst for C2H2 selective reduction of NOx at 200℃, in the presence of enriched oxygen by using a one-stage plasma-over-catalyst （POC） reactor, are reported. With a reactant gas mixture of 480 ppm NO, 500 ppm C2H2, 13.0% O2 in N2 and gas hourly space velocity （GHSV） = 10000 h^-1, pure catalytic, pure plasma-induced （discharges over fused silica pellets） and plasma-catalytic NOx conversion percentages are 45.0%, 4.0% and 92.2%, respectively. NOx conversion rates and energy costs were also compared for pulsed DC DBD and AC DBD reactors.Synergistic effects of pulsed DC dielectric barrier discharge （DBD） plasma and Indium modified HZSM-5 （In/HZSM-5） catalyst for C2H2 selective reduction of NOx at 200℃, in the presence of enriched oxygen by using a one-stage plasma-over-catalyst （POC） reactor, are reported. With a reactant gas mixture of 480 ppm NO, 500 ppm C2H2, 13.0% O2 in N2 and gas hourly space velocity （GHSV） = 10000 h^-1, pure catalytic, pure plasma-induced （discharges over fused silica pellets） and plasma-catalytic NOx conversion percentages are 45.0%, 4.0% and 92.2%, respectively. NOx conversion rates and energy costs were also compared for pulsed DC DBD and AC DBD reactors.

关 键 词：pulsed DC DBD AC DBD plasma-catalytic reduction synergistic effect In/HZSM-5 catalyst 

分 类 号：O643.3[理学—物理化学]