Реферат: For dispersed ceria-zirconia-based solid solutions prepared via the polymerized complex method and annealed at 700 °, effects of bulk doping by Ca, Mn, Co, Bi or Nb cations and surface modification by Mn and Pt on their structural features, surface/bulk oxygen reactivity and catalytic activity in methane combustion are considered. With up to 20 mol% doping, a structural type of homogeneous solid solutions of anion-deficient fluorite with disordered anion vacancies is formed. Doping by transition metal cations or Pt increases the mobility and reactivity of the surface/bulk oxygen. A broad variation in specific rates of methane combustion for the studied systems was observed, suggesting structural sensitivity of this reaction. In general, there is no universal relationship between the oxygen mobility, the reactivity and the catalytic activity in methane combustion, which is explained by the factor of specific methane activation on surface active sites. For the Pt-promoted samples, Pt efficiency in methane activation depends on the Pt-support interaction, and the most favorable ones being mixed Pt/MnOx and Pt/NbOx clusters on the surface of the supports that exhibit high lattice oxygen mobilities.

Библиографическая ссылка: Kuznetsova T. , Sadykov V. , Batuev L. , Moroz E. , Burgina E. , Rogov V. , Kriventsov V. , Kochubey D.
Modified Ceria-Zirconia Fluorite-Like Catalysts for the Combustion of Methane
Journal of Natural Gas Chemistry. 2006. V.15. N3. P.149-163. DOI: 10.1016/S1003-9953(06)60022-4 Scopus РИНЦ CAPlusCA OpenAlex Sciact

Даты:

Поступила в редакцию:	14 мар. 2006 г.
Опубликована в печати:	1 сент. 2006 г.
Опубликована online:	27 окт. 2006 г.

Идентификаторы БД:

Scopus:	2-s2.0-33750890942
РИНЦ:	13512441
Chemical Abstracts:	2006:1152843
Chemical Abstracts (print):	146:361712
OpenAlex:	W2007153431
Sciact:	7011

Цитирование в БД:

БД	Цитирований
OpenAlex	15

Альметрики: