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-система Института катализа

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

Конференция

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

Сборник

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

Журнал

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

Вых. Данные

Год: 2007, Том: 128, Страницы: 239-248 Страниц : 10 DOI: 10.4028/www.scientific.net/SSP.128.239

Авторы

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

Организации

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

Информация о финансировании (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	Российский фонд фундаментальных исследований	05-03-34761
3	Международный научно-технический центр	3234
4	Посольство Франции в России

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
В сборнике Doped Nanopowders. 2007. – C.239-248. – ISBN 9783908451389. DOI: 10.4028/www.scientific.net/SSP.128.239 WOS Scopus РИНЦ РИНЦ CAPlusCA OpenAlex

Опубликована online:

15 окт. 2007 г.

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

БД	Цитирований
Web of science	32
Scopus	37
РИНЦ	28 35
OpenAlex	32