Ozone generation enhanced by silica catalyst in packed-bed DBD reactor  

作　　者：Xin ZENG Yafang ZHANG Liangyin GUO Wenquan GU Ping YUAN Linsheng WEI 曾鑫;章亚芳;郭良银;古文泉;袁萍;魏林生(School of Resources Environmental&Chemical Engineering,Nanchang University,Nanchang 330031,People's Republic of China)

机构地区：[1]School of Resources Environmental&Chemical Engineering,Nanchang University,Nanchang 330031,People's Republic of China

出　　处：《Plasma Science and Technology》2021年第8期89-94,共6页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(No.51867018);Jiangxi Province’s Major Subject Academic and Technical Leader Training ProgramLeading Talent Project(No.20204BCJ22016);the Innovation Fund Designed for Graduate Students of Jiangxi Province,China(No.YC2020-S118)。

摘　　要：In this paper,three dielectric barrier discharge(DBD)configurations,which were plain DBD with no packing,DBD with packed pure quartz fibers and DBD with packed loaded quartz fibers,were employed to investigate the effect and catalytic mechanism of catalyst materials in a packed-bed ozone generator.From the experimental results,it was clear that the DBD configuration with packed pure fibers and packed loaded fibers promotes ozone generation.For the packed-bed reactor,ozone concentration and ozone yield were enhanced by an increase of electric field in the discharge gap with the packed-bed effect.Meanwhile,the enhancement of ozone concentration and yield for the DBD reactor packed by loaded fibers with silica nanoparticles was due to the catalysis of silica nanoparticles on the fiber surface.The adsorption of silica nanoparticles on the fiber surface can prolong the retention time of active species and enhance surface reactions.

关 键 词：DBD ozone generation packed-bed reactor silica catalysis surface reaction 

分 类 号：TQ123.2[化学工程—无机化工] TQ426