CO oxidation activity of Ag/TiO2 catalysts prepared via oxalate co-precipitation

K. Frey, Viacheslav Iablokov, Gérôme Melaet, L. Guczi, Norbert Kruse

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Ag/TiO2 catalysts with different Ag loadings (2, 4, 7 and 10% (w/w)) have been prepared by means of co-precipitation of Ag- and TiO-oxalates followed by temperature programmed oxidation (TPO). The catalysts were subjected to CO oxidation in a flow reactor at atmospheric pressure and temperatures up to 573 K. Best conversion performance was obtained in a CO/O2 = 1:1 mixture over 10% Ag/TiO2 for which the temperature of 50% CO conversion was T 50 = 333 K. The initial reaction rates were determined in a circulation reactor at low conversions and apparent activation energies between 13 and 25 kJ/mol were found for all catalysts. Transmission electron microscopy shows a broad range of nano-sized Ag particles on TiO 2 (nearly pure anatase).

Original languageEnglish
Pages (from-to)74-79
Number of pages6
JournalCatalysis Letters
Volume124
Issue number1-2
DOIs
Publication statusPublished - Aug 2008

Fingerprint

Oxalates
oxalates
Carbon Monoxide
Coprecipitation
catalysts
Oxidation
oxidation
Catalysts
reactors
Atmospheric temperature
atmospheric temperature
anatase
Titanium dioxide
Atmospheric pressure
Reaction rates
atmospheric pressure
reaction kinetics
Activation energy
activation energy
Transmission electron microscopy

Keywords

  • Ag
  • Catalytic activity
  • CO oxidation
  • Co-precipitation
  • Oxalates
  • TiO

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

CO oxidation activity of Ag/TiO2 catalysts prepared via oxalate co-precipitation. / Frey, K.; Iablokov, Viacheslav; Melaet, Gérôme; Guczi, L.; Kruse, Norbert.

In: Catalysis Letters, Vol. 124, No. 1-2, 08.2008, p. 74-79.

Research output: Contribution to journalArticle

Frey, K. ; Iablokov, Viacheslav ; Melaet, Gérôme ; Guczi, L. ; Kruse, Norbert. / CO oxidation activity of Ag/TiO2 catalysts prepared via oxalate co-precipitation. In: Catalysis Letters. 2008 ; Vol. 124, No. 1-2. pp. 74-79.
@article{9ea52d48cce74d5494aa4790882f67d7,
title = "CO oxidation activity of Ag/TiO2 catalysts prepared via oxalate co-precipitation",
abstract = "Ag/TiO2 catalysts with different Ag loadings (2, 4, 7 and 10{\%} (w/w)) have been prepared by means of co-precipitation of Ag- and TiO-oxalates followed by temperature programmed oxidation (TPO). The catalysts were subjected to CO oxidation in a flow reactor at atmospheric pressure and temperatures up to 573 K. Best conversion performance was obtained in a CO/O2 = 1:1 mixture over 10{\%} Ag/TiO2 for which the temperature of 50{\%} CO conversion was T 50 = 333 K. The initial reaction rates were determined in a circulation reactor at low conversions and apparent activation energies between 13 and 25 kJ/mol were found for all catalysts. Transmission electron microscopy shows a broad range of nano-sized Ag particles on TiO 2 (nearly pure anatase).",
keywords = "Ag, Catalytic activity, CO oxidation, Co-precipitation, Oxalates, TiO",
author = "K. Frey and Viacheslav Iablokov and G{\'e}r{\^o}me Melaet and L. Guczi and Norbert Kruse",
year = "2008",
month = "8",
doi = "10.1007/s10562-008-9485-6",
language = "English",
volume = "124",
pages = "74--79",
journal = "Catalysis Letters",
issn = "1011-372X",
publisher = "Springer Netherlands",
number = "1-2",

}

TY - JOUR

T1 - CO oxidation activity of Ag/TiO2 catalysts prepared via oxalate co-precipitation

AU - Frey, K.

AU - Iablokov, Viacheslav

AU - Melaet, Gérôme

AU - Guczi, L.

AU - Kruse, Norbert

PY - 2008/8

Y1 - 2008/8

N2 - Ag/TiO2 catalysts with different Ag loadings (2, 4, 7 and 10% (w/w)) have been prepared by means of co-precipitation of Ag- and TiO-oxalates followed by temperature programmed oxidation (TPO). The catalysts were subjected to CO oxidation in a flow reactor at atmospheric pressure and temperatures up to 573 K. Best conversion performance was obtained in a CO/O2 = 1:1 mixture over 10% Ag/TiO2 for which the temperature of 50% CO conversion was T 50 = 333 K. The initial reaction rates were determined in a circulation reactor at low conversions and apparent activation energies between 13 and 25 kJ/mol were found for all catalysts. Transmission electron microscopy shows a broad range of nano-sized Ag particles on TiO 2 (nearly pure anatase).

AB - Ag/TiO2 catalysts with different Ag loadings (2, 4, 7 and 10% (w/w)) have been prepared by means of co-precipitation of Ag- and TiO-oxalates followed by temperature programmed oxidation (TPO). The catalysts were subjected to CO oxidation in a flow reactor at atmospheric pressure and temperatures up to 573 K. Best conversion performance was obtained in a CO/O2 = 1:1 mixture over 10% Ag/TiO2 for which the temperature of 50% CO conversion was T 50 = 333 K. The initial reaction rates were determined in a circulation reactor at low conversions and apparent activation energies between 13 and 25 kJ/mol were found for all catalysts. Transmission electron microscopy shows a broad range of nano-sized Ag particles on TiO 2 (nearly pure anatase).

KW - Ag

KW - Catalytic activity

KW - CO oxidation

KW - Co-precipitation

KW - Oxalates

KW - TiO

UR - http://www.scopus.com/inward/record.url?scp=47249151833&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=47249151833&partnerID=8YFLogxK

U2 - 10.1007/s10562-008-9485-6

DO - 10.1007/s10562-008-9485-6

M3 - Article

VL - 124

SP - 74

EP - 79

JO - Catalysis Letters

JF - Catalysis Letters

SN - 1011-372X

IS - 1-2

ER -