New insights into benzene hydrocarbon decomposition from fuel exhaust using self-support ray polarization plasma with nano-TiO 2

A new insight into self-support ray polarization (SSRP) of nonthermal plasma for benzene hydrocarbon decomposition in fuel exhaust was put forward. A wire-tube dielectric barrier discharge (DBD) AC plasma reactor was used at atmospheric pressure and room temperature. The catalyst was made of nano-TiO2 and ceramic raschig rings. Nano-TiO2 was prepared as an active component by ourselves in the laboratory. Ceramic raschig rings were selected for catalyst support materials. Then, the catalyst was packed into nonthermal plasma (NTP) reactor. Six aspects, benzene initial concentration, gas flux, electric field strength, removal efficiency, ozone output, and CO2 selectivity on benzene removal efficiency, were investigated. The results showed SSRP can effectively enhance benzene removal efficiency. The removal efficiency of benzene was up to 99% at electric field strength of 12 kV/cm. At the same time, SSRP decreases ozone yield and shows a better selectivity of CO2 than the single technology of nonthermal plasma. The final products were mostly CO, CO2, and H2O. Our research will lay the foundation for SSRP industrial application in the future.

[1]  Xiaoqing Pan,et al.  Creating high quality Ca:TiO2-B (CaTi5O11) and TiO2-B epitaxial thin films by pulsed laser deposition. , 2015, Chemical communications.

[2]  D. Wolbert,et al.  Isovaleraldehyde degradation using UV photocatalytic and dielectric barrier discharge reactors, and their combinations , 2015 .

[3]  T. Zhu,et al.  Volatile organic compounds emission control in industrial pollution source using plasma technology coupled with F-TiO2/γ-Al2O3 , 2015, Environmental technology.

[4]  Chengming Jiang,et al.  Carbon nanotube networks on different platforms , 2014 .

[5]  D. Wolbert,et al.  Use of DBD plasma, photocatalysis, and combined DBD plasma/photocatalysis in a continuous annular reactor for isovaleraldehyde elimination – Synergetic effect and byproducts identification , 2014 .

[6]  R. Morent,et al.  TCE abatement with a plasma-catalytic combined system using MnO2 as catalyst , 2014 .

[7]  D. Wolbert,et al.  Abatement of 3-methylbutanal and trimethylamine with combined plasma and photocatalysis in a continuous planar reactor , 2014 .

[8]  Z. Lou,et al.  Removal of styrene using dielectric barrier discharge plasmas combined with sol–gel prepared TiO2 coated γ-Al2O3 , 2014 .

[9]  P. Estifaee,et al.  Synthesis and characterization of Pt/Al2O3–CeO2 nanocatalyst used for toluene abatement from waste gas streams at low temperature: Conventional vs. plasma–ultrasound hybrid synthesis methods , 2014 .

[10]  Q. Jia,et al.  Discharge characteristics and abatement of volatile organic compounds using plasma reactor packed with ceramic Raschig rings , 2013 .

[11]  J. Röpcke,et al.  On the reactivity of plasma-treated photo-catalytic TiO2 surfaces for oxidation of C2H2 and CO , 2013 .

[12]  Jian Li,et al.  Synergistic effect of catalyst for oxidation removal of toluene. , 2009, Journal of Hazardous Materials.

[13]  Lu Sihua.  Study on the Characteristics of VOCs Source Profiles of Vehicle Exhaust and Gasoline Emission , 2003 .