Pt-Supported Nanocrystalline Ceria-Zirconia Doped with La, Pr or Gd: Factors Controlling Syngas Generation in Partial Oxidation/Autothermal Reforming of Methane or Oxygenates | Sciact - CRIS-system of Boreskov Institute of Catalysis

Pt-Supported Nanocrystalline Ceria-Zirconia Doped with La, Pr or Gd: Factors Controlling Syngas Generation in Partial Oxidation/Autothermal Reforming of Methane or Oxygenates Full article

Conference

2006 E-MRS Fall Meeting. Symposium C - Doped Nanopowders: Synthesis, Characterisation, Applications
04-08 Sep 2006 , Warsaw

Source

Doped Nanopowders
Compilation, 2007. 292 c. ISBN 9783908451389.

Journal

Solid State Phenomena (Предыдущее наименование: Diffusion and Defect Data Pt.B: Solid State Phenomena)
ISSN: 1662-9779

Output data

Year: 2007, Volume: 128, Pages: 239-248 Pages count : 10 DOI: 10.4028/www.scientific.net/SSP.128.239

Authors

Sadykov V.A. ¹ , Mezentseva N.V. ¹ , Alikina G.M. ¹ , Lukashevich A.I. ¹ , Borchert Y. ² , Kuznetsova T.G. ¹ , Ivanov V.P. ¹ , Trukhan S.N. ¹ , Paukshtis E.A. ¹ , Muzykantov V.S. ¹ , Kuznetsov V.L. ¹ , Rogov V.A. ¹ , Ross J.R.H. ³ , Kemnitz E. ⁴ , Mirodatos C. ⁵

Affiliations

1	Boreskov Institute of Catalysis SB RAS
2	University of Bremen
3	University of Limerick
4	Humboldt University of Berlin
5	Institute of Researches on Catalysis and Environment in Lyon

Funding (4)

1	International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union	05-1000005-7663
2	Russian Foundation for Basic Research	05-03-34761
3	International Science and Technology Center	3234
4	French Embassy in Moscow

Nanocrystalline CeO2-ZrO2 (Ce:Zr 1:1) samples doped with La, Pr or Gd cations (containing up to 30 at.%) were prepared via the Pechini route. Pt (1.4 wt.%) was supported via impregnation with H2PtCl6 solution followed by drying and calcination. The samples’ surface features were studied by SIMS and FTIRS of adsorbed CO. The oxygen mobility was characterized by the dynamic oxygen isotope exchange and H2 TPR. Catalytic activity was studied in the flow installation using diluted feeds (0.7% CH4 +0.5% O2 or 1% C3H6O + 0.5% O2 +0.5% H2O in He). In the selective oxidation of methane (POM), the catalytic activity correlates with Pt dispersion controlled by the oxidized sample’s ability to stabilize Pt2+ cations as precursors of small reactive Pt clusters formed under reaction conditions. This is favoured by a larger doping cation (La) and a developed network of nanodomain boundaries. At comparable Pt dispersion, the highest performance was demonstrated by a La-doped system, which correlates with the highest surface/near-surface oxygen mobility controlled by the strength of Ce-O bonds in the surface layer. In the autothermal reforming of acetone, the activity trends differ from those in POM because of the more prominent role of the oxygen mobility required to prevent surface coking.

Sadykov V.A. , Mezentseva N.V. , Alikina G.M. , Lukashevich A.I. , Borchert Y. , Kuznetsova T.G. , Ivanov V.P. , Trukhan S.N. , Paukshtis E.A. , Muzykantov V.S. , Kuznetsov V.L. , Rogov V.A. , Ross J.R.H. , Kemnitz E. , Mirodatos C.
Pt-Supported Nanocrystalline Ceria-Zirconia Doped with La, Pr or Gd: Factors Controlling Syngas Generation in Partial Oxidation/Autothermal Reforming of Methane or Oxygenates
In compilation Doped Nanopowders. 2007. – C.239-248. – ISBN 9783908451389. DOI: 10.4028/www.scientific.net/SSP.128.239 WOS Scopus РИНЦ РИНЦ ANCAN OpenAlex

Published online:

Oct 15, 2007

Web of science:	WOS:000246957600032
Scopus:	2-s2.0-37549009576
Elibrary:	27029421 \| 41740702
Chemical Abstracts:	2007:653707
Chemical Abstracts (print):	150:171797
OpenAlex:	W2069049070

DB	Citing
Web of science	32
Scopus	37
Elibrary	28 35
OpenAlex	32