Effects of TiO2 coating on zeolite particles for NO and SO 2 removal by dielectric barrier discharge process

Anna Nasonova; Kyo Seon Kim

doi:10.1016/j.cattod.2013.03.006

Effects of TiO₂ coating on zeolite particles for NO and SO ₂ removal by dielectric barrier discharge process

Anna Nasonova, Kyo Seon Kim

Research output: Contribution to journal › Article › peer-review

41 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	90-95
Number of pages	6
Journal	Catalysis Today
Volume	211
DOIs	https://doi.org/10.1016/j.cattod.2013.03.006
Publication status	Published - 2013 Aug 1

Bibliographical note

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.

Keywords

Dielectric barrier discharge
NO and SO removal
Particle coating by a rotating PCVD reactor
TiO photocatalyst coating
Zeolite catalyst

ASJC Scopus subject areas

Catalysis
General Chemistry

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10.1016/j.cattod.2013.03.006

Cite this

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title = "Effects of TiO2 coating on zeolite particles for NO and SO 2 removal by dielectric barrier discharge process",

abstract = "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.",

keywords = "Dielectric barrier discharge, NO and SO removal, Particle coating by a rotating PCVD reactor, TiO photocatalyst coating, Zeolite catalyst",

author = "Anna Nasonova and Kim, {Kyo Seon}",

note = "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. ",

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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

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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.

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