Sol-Gel Derived Nanocrystalline Ce0.45Zr0.45La0.10O2-δ/Pt and Ce0.9Sm0.1O2-δ/Pt Sofc Anodes: The Peculiarities of the Catalytic Performance
Нанокристаллические Ce0.45Zr0.45La0.10O2-δ/Pt AND Ce0.9Sm0.1O2-δ/Pt ТОТЭ-аноды, полученные золь-гель методом: особенности каталитического поведения
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Международный научный журнал Альтернативная энергетика и экология
ISSN: 1608-8298
|
| Output data |
Year: 2007,
Number: 8,
Pages: 84-89
Pages count
: 6
|
| Authors |
Frolova E.V.
,
Ivanovskaya M.I.
,
Yaremchenko A.A.
,
Kharton V.V.
,
Sadykov V.A.
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS
|
| 2 |
University of Aveiro
|
| 3 |
Belarusian State University
|
|
The present work focused on the evaluation of electro-catalytic activity in a solid oxide fuel cell (SOFC) type reactor of nano-crystalline Ce0 45Zr0 45La0 j02 g and Ce0 9Sm0 j02 g samples, prepared via inorganic sol-gel method, and their characterization. Structural peculiarities of samples were investigated by means of ТЕМ, XRD, EDXA and EPR methods. It seems that the colloidal transition results in the loose cubic Cej xMx02 (M = Zr, Sm, La) fluorite-type solid solution structure with higher concentration of structural defects [Ce3+-Fo]. A isolated oxygen vacancies arrangement caused the increasing in oxygen transport. The presence of La(III) enables to retain the cubic fluorite structure of the nano-scale particles up to 1200 °C. The morphotropic phase transformation combined with strong metal-support interactions seems to be responsible for the attractive catalytic activity of Ce0 45Zr0 45La0 10O2 5-based anodes towards partial oxidation of CH4.