Catalyst regeneration and activity enhancement of Au/TiO2 by atmospheric pressure nonthermal plasma

In this work, a nonthermal plasma was applied to the TiO2-supported gold nanoparticle catalysts (Au/TiO2) for the catalyst regeneration and the enhancement of catalytic activity for CO oxidation. Exposure to the 100ppm toluene or C3H6 resulted in rapid deactivation of the Au/TiO2 catalyst. Oxygen pl...

Full description

Saved in:
Bibliographic Details
Published in:Applied catalysis. A, General General, 2007-10, Vol.329, p.93-98
Main Authors: KIM, H. H, TSUBOTA, S, DATE, M, OGATA, A, FUTAMURA, S
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this work, a nonthermal plasma was applied to the TiO2-supported gold nanoparticle catalysts (Au/TiO2) for the catalyst regeneration and the enhancement of catalytic activity for CO oxidation. Exposure to the 100ppm toluene or C3H6 resulted in rapid deactivation of the Au/TiO2 catalyst. Oxygen plasma and O3 injection were found to be effective in the regeneration of the deactivated Au/TiO2 catalysts. The adsorbed toluene or C3H6 preferentially decomposed to CO2 regardless of the regeneration method. Direct application of nonthermal plasma greatly enhanced the CO oxidation not only over the completely deactivated Au/TiO2 catalysts, but also over the Au/TiO2 catalysts prepared by the impregnation method, which showed no catalytic activity without plasma.
ISSN:0926-860X
1873-3875
DOI:10.1016/j.apcata.2007.06.029