Yu J.C.C.Nguyen V.-H.Lasek J.Chiang S.-W.Li D.X.Wu J.C.S.2019-05-032019-05-0320160926860Xhttps://scholars.lib.ntu.edu.tw/handle/123456789/406442In developing a higher activity for NOx abatement from stationary emission sources, photo-assisted selective catalytic reduction (photo-SCR) was systematically investigated over TiO2 supported on a spherical £\-Al2O3/£^-Al2O3. The formation of NO2 was virtually suppressed in the reaction temperature range of 110¡V200?¢XC. The NOx removal efficiencies of TiO2/£^-Al2O3 photocatalyst at 120?¢XC for real flue gas (in pilot-scale photoreactor) and simulated flue gas (in lab-scale photoreactor) were 68¡V75% and 43.5%, respectively, in the presence of reducing reagent (C4H10). SEM and XPS techniques revealed that sulfur temporarily occupied the active sites of the photocatalyst, causing deactivation. Spent TiO2/£^-Al2O3 photocatalyst was regenerated via desulfurization by either air or hydrogen at 400¡V500?¢XC. The effects of regeneration temperature and regeneration time on the photocatalytic activity are methodically investigated, demonstrating that using hydrogen at 500?¢XC in 1?h could completely regenerate the spent photocatalyst. ? 2016 Elsevier B.V.DesulfurizationLab-scaleNOx abatementPhoto-assisted SCRPhotocatalystPilot-scale[SDGs]SDG6[SDGs]SDG13journal article10.1016/j.apcata.2016.06.0202-s2.0-84976334373https://www.scopus.com/inward/record.uri?eid=2-s2.0-84976334373&doi=10.1016%2fj.apcata.2016.06.020&partnerID=40&md5=e8aea7a7b9d77616dfc94a4d382c5892