Effect of Ag/TiO2 catalyst preparation on gas-phase benzene decomposition using non-thermal plasma driven catalysis under oxygen plasma

• Published in: Reaction kinetics, mechanisms and catalysis Vol. 117; no. 1; pp. 103 - 118
• Main Authors: Pangilinan, Christian David C., Kurniawan, Winarto, Salim, Chris, Hinode, Hirofumi
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.02.2016
• Subjects: Catalysis; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Physical Chemistry; Non-thermal plasma catalysis; Ag/TiO; Benzene; Deposition–precipitation methods
• ISSN: 1878-5190; 1878-5204
• DOI: 10.1007/s11144-015-0920-6

Non-thermal plasma (NTP) driven catalytic decomposition of gas-phase benzene under oxygen plasma was carried out at room temperature over silver on titanium dioxide catalysts. Three preparation methods were investigated as well as the effect of silver loading amount. The catalysts were prepared using impregnation method (IP), deposition–precipitation method with NaOH (DPN), and deposition–precipitation method with H 2 O 2 (DPH) with 1, 3 and 5 % silver loading by weight. The catalysts were characterized using XRD, XPS, SEM–EDS and N 2 adsorption, and the catalytic activity was tested on 200 ppm benzene. Low energy treatment by NTP alone only showed insignificant change in benzene concentration but upon the addition of catalysts, IP catalysts were able to decompose the pollutant up to 20 % and with DPN and DPH catalysts up to 100 %. DPN catalysts were also able to decompose the ozone produced in the reactor. The 3 % Ag/TiO 2 prepared by DPN method showed the highest energy efficiency capable of decomposing benzene at 392 g/kWh.