【摘要】：為了提高萘的降解效果,提出了介質(zhì)阻擋放電(DBD)和催化協(xié)同降解萘的方法,研究了填充介質(zhì)對放電特性和萘降解效果的影響,深入分析了TiO_2催化劑負載量和氣體溫度對萘降解的影響機理。研究結(jié)果表明:填充TiO_2/硅藻土對DBD放電有一定的抑制作用,導(dǎo)致峰值電流有所下降;填充TiO_2/硅藻土較未填充時,萘的降解率及CO_x選擇率均有明顯提升,特別是CO_x選擇率提高將近30%;隨著硅藻土上TiO_2負載量的增加,CO_x選擇率從47.5%增加至76.5%,CO2的提高幅度達到24.2%,而CO選擇率的提高幅度僅4.8%;模擬氣體溫度由25℃升高到100℃,雖然萘的降解率僅從83.8%增加至91.8%,但CO_x選擇率則從45.3%增加至87.5%,增加了近1倍。TiO_2對萘的降解有明顯的促進作用,這為難降解有機氣體的無害化處理提供了新的依據(jù)。
[Abstract]:In order to improve the degradation effect of naphthalene, the method of dielectric barrier discharge (DBD) and catalytic co-degradation of naphthalene was put forward, and the effect of filling medium on discharge characteristics and naphthalene degradation efficiency was studied. The influence mechanism of loading amount of TiO_2 catalyst and gas temperature on naphthalene degradation was analyzed. The results show that the filling of TiO_2/ diatomite can inhibit the discharge of DBD to some extent, resulting in the decrease of peak current. When filled with TiO_2/ diatomite, the degradation rate and CO_x selectivity of naphthalene increased significantly, especially the CO_x selectivity increased by nearly 30%. With the increase of TiO_2 loading on diatomite, the selectivity of CO_x increased from 47.5% to 76.5% and the range of CO _ 2 increased to 24.2%, while the increase of CO selectivity was only 4.8%. When the simulated gas temperature was raised from 25 鈩，

本文編號：2406047