Ceria-Based Fluorite-Like Oxide Solid Solutions as Catalysts of Methane Selective Oxidation into Syngas by the Lattice Oxygen: Synthesis, Characterization and Performance | Sciact - CRIS-система Института катализа

Ceria-Based Fluorite-Like Oxide Solid Solutions as Catalysts of Methane Selective Oxidation into Syngas by the Lattice Oxygen: Synthesis, Characterization and Performance Научная публикация

Конференция

3rd Asia-Pacific Congress on Catalysis
12-15 окт. 2003 , Dalian

Журнал

Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308

Вых. Данные

Год: 2004, Том: 93-95, Страницы: 45-53 Страниц : 9 DOI: 10.1016/j.cattod.2004.05.016

Ключевые слова

Ceria doped by Sm or Bi, EXAFS, FTIRS, Methane selective oxidation into syngas, Raman, RED, Sructural and surface properties, Surface/lattice oxygen mobility and reactivity, TEM, UV-vis, XRD

Авторы

Sadykov V.A. ¹ , Kuznetsova T.G. ¹ , Alikina G.M. ¹ , Frolova Y.V. ¹ , Lukashevich A.I. ¹ , Potapova Y.V. ¹ , Muzykantov V.S. ¹ , Rogov V.A. ¹ , Kriventsov V.V. ¹ , Kochubei D.I. ¹ , Moroz E.M. ¹ , Zyuzin D.I. ¹ , Zaikovskii V.I. ¹ , Kolomiichuk V.N. ¹ , Paukshtis E.A. ¹ , Burgina E.B. ¹ , Zyryanov V.V. ² , Uvarov N.F. ² , Neophytides S. ³ , Kemnitz E. ⁴

Организации

1	Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
2	Institute of Solid State Chemistry SB RAS Novosibirsk, Russia
3	Institute of Chemical Engineering and High Temperature Processes, Patras, Greece Russia
4	Institute for Chemistry, Humboldt University, Berlin, Germany

Информация о финансировании (4)

1	Международный научно-технический центр	2529
2	Сибирское отделение Российской академии наук	39
3	Сибирское отделение Российской академии наук	110
4	International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union	01-2162

Polymerized precursor route [M.P. Pechini, US Patent 3, 330 (1967) 697] was applied for synthesis of dispersed ceria-based solid solutions Ce1−xMex3+O3−y (Me3+= Sm3+ or Bi3+, x up to 0.5). The surface properties of those samples were modified by supporting Pt. Their bulk and surface structural features were characterized by using XRD, TEM, EXAFS, X-ray wide angle scattering (RED), UV–vis, Raman, FTIRS of lattice modes and adsorbed CO. To elucidate factors controlling the surface/bulk oxygen mobility and reactivity, these results were compared with the data of‘ the oxygen isotope exchange and/or H2/CH4 temperature-programmed reduction (TPR). Single-phase fluorite-like solid solutions with a nanodomain microstructure are characterized by distortion of the coordination polyhedra caused by dopants followed by the lattice local rearrangement into that of a lower symmetry at a high dopant content. The highest performance in methane selective oxidation into syngas by the lattice oxygen is found for samples where isolated oxygen vacancies dominate. Earlier studied Pt/Ce–Zr–La–O system [Stud. Surf. Sci. Catal. 143 (2002) 659; T.G. Kuznetsova, V.A. Sadykov, S.A. Veniaminov, G.M. Alikina, E.A. Paukshtis, Ya.N. Kulikova, E.M. Moroz, E.B. Burgina, V.A. Rogov, V.N. Kolomiichuk, V.V. Kriventsov, D.I. Kochubei, O.N. Martyanov, V.F. Yudanov, I.S. Abornev, S. Neophytides, ISO22, Europacat VI, September 2003, Innsbruck, Austria] has a lower oxygen mobility, is less stable in redox cycles and less selective for syngas. Bi–Ce–O system mainly combusts methane and is irreversibly decomposed by deep reduction due to metallic Bi evaporation.

Sadykov V.A. , Kuznetsova T.G. , Alikina G.M. , Frolova Y.V. , Lukashevich A.I. , Potapova Y.V. , Muzykantov V.S. , Rogov V.A. , Kriventsov V.V. , Kochubei D.I. , Moroz E.M. , Zyuzin D.I. , Zaikovskii V.I. , Kolomiichuk V.N. , Paukshtis E.A. , Burgina E.B. , Zyryanov V.V. , Uvarov N.F. , Neophytides S. , Kemnitz E.
Ceria-Based Fluorite-Like Oxide Solid Solutions as Catalysts of Methane Selective Oxidation into Syngas by the Lattice Oxygen: Synthesis, Characterization and Performance
Catalysis Today. 2004. V.93-95. P.45-53. DOI: 10.1016/j.cattod.2004.05.016 WOS Scopus РИНЦ CAPlusCA OpenAlex

Опубликована online:	9 июл. 2004 г.
Опубликована в печати:	1 сент. 2004 г.

Web of science:	WOS:000223973200007
Scopus:	2-s2.0-4344592022
РИНЦ:	13458189
Chemical Abstracts:	2004:741410
Chemical Abstracts (print):	141:425962
OpenAlex:	W2013192989

БД	Цитирований
Web of science	78
Scopus	85
РИНЦ	88
OpenAlex	78