DDBD协同MnO_x催化氧化降解低浓度甲苯  

CATALYTIC OXIDATION OF DILUTE TOLUENE USING DDBD-ASSISTED MnO_x

作　　者：张硕[1] 梁吉艳[1] 沈欣军[1] 于欣扬 ZHANG Shuo;LIANG Ji-yan;SHEN Xin-jun;YU Xin-yang(School of Science,Shenyang University of Technology,Shengyang 110870 China)

机构地区：[1]沈阳工业大学理学院

出　　处：《环境工程》2019年第10期148-152,共5页Environmental Engineering

基　　金：辽宁省公益基金计划项目(GY-2017-0013);沈阳市科技计划项目(17-231-1-19)

摘　　要：采用DDBD协同不同前驱物制备MnOx氧化降解低浓度甲苯,考察催化前驱物对甲苯降解、O3和NOx产量的影响。结果表明:特定输入能量为25 J/L时,仅采用DDBD对甲苯降解效率最高可达50.7%,且产生O3、NO和NO2等副产物;MnOx催化氧化能力为MnOx(MA)>MnOx(MS);其中,采用DDBD-15%MnOx(MA)降解甲苯时最大去除率为97.5%,NO和NO2最大去除率分别为80.0%和43.7%,COx选择性最大值为73.4%,在尾气中仅有少量的O3被检测到。DDBD combined with MnOx prepared by different precursors was used to oxidize duile toluene.The effects of catalytic precursors on toluene degradation,ozone and nitrogen oxiden were investigated.The results showed that when the SIE was 25 J/L,the degradation efficiency of DDBD was up to 50.7%,while the by-products such as O3,NO and NO2 were generated.The catalytic oxidation capacity of MnOx was by the order of MnOx(MA)>MnOx(MS);the maximum removal rate of toluene was 97.5%in the DDBD-15%MnOx(MA)system;the maximum removal rates of NO and NO2 were 80.0%and 43.7%,respectively;and the maximum selectivity of COx was 73.4%.Moreover,trace amount of ozone was detected in the tail gas.

关 键 词：双层介质阻挡放电 MNOX 前驱物 甲苯 NOx 

分 类 号：X701[环境科学与工程—环境工程]