Thermal H-2-treatment effects on CO/CO2 conversion over Pd-doped CeO2 comparison with Au and Ag-doped CeO2

Title
Thermal H-2-treatment effects on CO/CO2 conversion over Pd-doped CeO2 comparison with Au and Ag-doped CeO2
Author(s)
손영구박요한김석규프라드한[프라드한]
Keywords
CO OXIDATION REACTION; CARBON-MONOXIDE OXIDATION; LOW-TEMPERATURE; CATALYTIC-PROPERTIES; PREFERENTIAL OXIDATION; PALLADIUM CATALYSTS; ALCOHOL OXIDATION; AU/TIO2 CATALYST; OXYGEN VACANCIES; AG/CEO2 CATALYST
Issue Date
201410
Publisher
SPRINGER
Citation
REACTION KINETICS MECHANISMS AND CATALYSIS, v.113, no.1, pp.85 - 100
Abstract
CO oxidation to CO2 by Pd-CeO2 catalysts was tested by temperature-programmed mass spectrometry for as-prepared and thermal H-2-treated Pd-doped CeO2 catalysts, compared with those of Ag and Au-doped CeO2. For the as-prepared samples, the oxidation rate and the T-10 % (the temperature at 10 % CO conversion) occurred in the order of Au a parts per thousand Pd > Ag a parts per thousand << undoped in the 1st CO oxidation run, while in the 2nd run, the order became Au > Pd > Ag a parts per thousand << undoped. For the thermal H-2-treated samples, the order became Pd > Au > Ag > undoped and Au > Pd > Ag > undoped in the 1st and 2nd CO oxidation runs, respectively. The T-10 % in the 2nd run commonly occurred at much lower temperatures for the metal-doped CeO2 upon achieving good metal-oxide interfacial contact during the 1st run. The T-10 % of undoped CeO2 was the most significantly affected by the thermal treatment effects while those of metal-doped CeO2 catalysts were not greatly affected by the thermal H-2-treatment. Based on these findings, the metal-support interaction/interface is more important than the surface area, Au (88 m(2)/g) > Ag (59 m(2)/g) a parts per thousand Pd a parts per thousand undoped.
URI
http://hdl.handle.net/YU.REPOSITORY/30609http://dx.doi.org/10.1007/s11144-014-0757-4
ISSN
1878-5190
Appears in Collections:
이과대학 > 화학생화학부 > Articles
문과대학 > 중국언어문화학과 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE