TY - JOUR
T1 - Effects of TiO2 coating on zeolite particles for NO and SO 2 removal by dielectric barrier discharge process
AU - Nasonova, Anna
AU - Kim, Kyo Seon
N1 - Funding Information:
This work was supported by the Regional Innovation Center for Environmental Technology of Thermal Plasma (ETTP) at Inha University , as designated by MKE (2009). The instrumental analysis was carried out with support from the Central Laboratory of Kangwon National University.
PY - 2013/8/1
Y1 - 2013/8/1
N2 - The dielectric barrier discharge-catalyst (DBD-C) hybrid process and the dielectric barrier discharge-catalyst-photocatalyst (DBD-C-P) hybrid process were analyzed for NO and SO2 removal. In the DBD-C hybrid process, zeolite particles were used as dielectric materials and catalysts for dielectric barrier discharge; in the DBD-C-P hybrid process, zeolite particles were coated with TiO2 photocatalyst to investigate the combined effects of plasma-catalyst-photocatalyst on NO and SO2 removal. Zeolite particles were coated with TiO2 photocatalyst by means of a rotating cylindrical PCVD reactor. TiO2 photocatalyst was coated partially on the zeolite surface while preserving the porous structure of zeolite. NO and SO2 removal was studied for various process variables such as applied peak voltage, initial NO and SO2 concentrations, pulse frequency, and residence time. The effects of TiO2 photocatalyst coating on NO and SO2 removal efficiencies by the DBD-C-P hybrid process are significant for low and medium applied voltage (<14 kV). The NO and SO 2 removal efficiencies in the DBD-C-P hybrid process are 1.02-3.4 times and 1.03-4 times higher, respectively, than those in the DBD-C hybrid process for the process variables used in this study. We found that the zeolite particles coated with TiO2 photocatalyst by means of a rotating cylindrical PCVD reactor could be effectively used to remove NO and SO 2 in the DBD-C-P hybrid process.
AB - The dielectric barrier discharge-catalyst (DBD-C) hybrid process and the dielectric barrier discharge-catalyst-photocatalyst (DBD-C-P) hybrid process were analyzed for NO and SO2 removal. In the DBD-C hybrid process, zeolite particles were used as dielectric materials and catalysts for dielectric barrier discharge; in the DBD-C-P hybrid process, zeolite particles were coated with TiO2 photocatalyst to investigate the combined effects of plasma-catalyst-photocatalyst on NO and SO2 removal. Zeolite particles were coated with TiO2 photocatalyst by means of a rotating cylindrical PCVD reactor. TiO2 photocatalyst was coated partially on the zeolite surface while preserving the porous structure of zeolite. NO and SO2 removal was studied for various process variables such as applied peak voltage, initial NO and SO2 concentrations, pulse frequency, and residence time. The effects of TiO2 photocatalyst coating on NO and SO2 removal efficiencies by the DBD-C-P hybrid process are significant for low and medium applied voltage (<14 kV). The NO and SO 2 removal efficiencies in the DBD-C-P hybrid process are 1.02-3.4 times and 1.03-4 times higher, respectively, than those in the DBD-C hybrid process for the process variables used in this study. We found that the zeolite particles coated with TiO2 photocatalyst by means of a rotating cylindrical PCVD reactor could be effectively used to remove NO and SO 2 in the DBD-C-P hybrid process.
KW - Dielectric barrier discharge
KW - NO and SO removal
KW - Particle coating by a rotating PCVD reactor
KW - TiO photocatalyst coating
KW - Zeolite catalyst
UR - http://www.scopus.com/inward/record.url?scp=84879248409&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2013.03.006
DO - 10.1016/j.cattod.2013.03.006
M3 - Article
AN - SCOPUS:84879248409
SN - 0920-5861
VL - 211
SP - 90
EP - 95
JO - Catalysis Today
JF - Catalysis Today
ER -