低温等离子体与MnO_x/γ-Al_2O_3协同催化降解正己醛  

Removal of Hexanal by Non-thermal Plasma and MnOx/γ-Al_2O_3 Combination

作　　者：陈春雨[1] 刘彤[1] 王卉[1] 于琴琴[1] 范杰[1] 肖丽萍[1] 郑小明[1] 

机构地区：[1]浙江大学催化研究所,浙江杭州310028

出　　处：《催化学报》2012年第6期941-951,共11页

基　　金：国家自然科学基金(J0830413);浙江省科技厅优先主题项目(2009C11141);浙江省自然科学基金(Y4090097);浙江省创新团队项目(2010R50014-6)~~

摘　　要：研究了在低温等离子体和催化剂共同作用下低浓度正己醛的降解反应.结果表明,等离子体与γ-Al2O3之间产生了很好的催化协同作用,在低放电功率(2.8W)和低温(80℃)下,干燥空气气氛中,γ-Al2O3对0.12%正己醛的去除率为87.1%;当γ-Al2O3负载7.5%MnOx后,正己醛去除率达到96.5%,其效果与Pt/γ-Al2O3相当.7.5%MnOx/γ-Al2O3在实验条件下连续使用50h,其催化活性未见下降.The removal of hexanal by a combination of a non-thermal plasma and catalyst was studied.There was a synergism between the plasma and γ-Al2O3 that gave a hexanal removal efficiency of 87.1% at 80 ℃ and 2.8 W discharge power.The removal efficiency was improved to 96.5% when the γ-Al2O3 was loaded with 7.5% MnOx,and a comparable efficiency was also obtained with a Pt/γ-Al2O3 catalyst.The 7.5%MnOx/γ-Al2O3 catalyst was stable over 50 h use during which the removal efficiency did not decline.

关 键 词：餐饮油烟 正己醛 Γ-氧化铝 低温等离子体 协同作用 

分 类 号：X51[环境科学与工程—环境工程] O643.3[理学—物理化学]