The Effect of Supports (Al2O3, Al2O3–CeO2 and Al2O3–CeZrO2) on the Nature of Gold-Species in Supported Gold Catalysts
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Translated
|
| Journal |
Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques
ISSN: 1027-4510
, E-ISSN: 1819-7094
|
| Output data |
Year: 2010,
Volume: 4,
Number: 4,
Pages: 630-635
Pages count
: 6
DOI:
10.1134/S1027451010040154
|
| Tags |
OXIDATION; NANOPARTICLES |
| Authors |
Simakov A.V.
1
,
Kriventsov V.V.
2
,
Simakova I.L.
2
,
Smolentseva E.V.
1
,
Castillon F.
1
,
Estrada M.
3
,
Vargas E.
4
,
Yakimchuk E.P.
2
,
Ivanov D.P.
2
,
Aksenov D.G.
2
,
Andreev D.V.
2
,
Novgorodov B.N.
2
,
Kochubey D.I.
2
,
Fuentes S.
1
,
Maksimovskii E.A.
5
,
Nachepurenko S.F.
6
|
| Affiliations |
| 1 |
Universidad Nacional Autonoma de Mexico, Centro de Nanociencias y Nanotecnologia, Ensenada, B.C., 22860 Mexico
|
| 2 |
Boreskov Institute of Catalysis, Russian Academy of Sciences, Novosibirsk, 630090 Russia
|
| 3 |
Posgrado en Fisica de Materiales, CICESE, Ensenada, BC, Mexico
|
| 4 |
Posgrado en Ciencias e Ingeneria, Área Nanotecnologia, Universidad Autonoma de Baja California, Ensenada, B.C., Mexico
|
| 5 |
Nikolaev Institute of Inorganic Chemistry, Russian Academy of Sciences
|
| 6 |
V.S. Sobolev Institute of Geology and Mineralogy, Russian Academy of Sciences
|
|
Funding (13)
|
1
|
National Autonomous University of Mexico
|
IN 224510
|
|
2
|
Russian Foundation for Basic Research
|
08-03-91758
|
|
3
|
Russian Foundation for Basic Research
|
10-03-01005
|
|
4
|
Russian Foundation for Basic Research
|
08-03-92502
|
|
5
|
Russian Foundation for Basic Research
|
09-03-01012
|
|
6
|
Russian Foundation for Basic Research
|
08-03-01150
|
|
7
|
The Ministry of Education and Science of the Russian Federation
|
02.518.11.7128
|
|
8
|
Президиум РАН
|
27.12
|
|
9
|
National Autonomous University of Mexico
|
50547-Q
|
|
10
|
National Autonomous University of Mexico
|
IN 110208
|
|
11
|
National Autonomous University of Mexico
|
IN 120706-3
|
|
12
|
Russian Foundation for Basic Research
|
10-03-01209
|
|
13
|
Президиум РАН
|
27.13
|
This work is concerned with the study of Au specimens produced by gold deposition on nanosized mixed oxides (alumina, ceria, zirconia) prepared by the sol-gel method using organometallic precursors. According to X-ray absorption near edge structure, extended X-ray absorption fine structure, transmission electron microscopy data, and ultraviolet-visible and X-ray photoelectron spectroscopy measurements, mixed Al-Ce-Zr oxides are quite effective for stabilization of different gold specimens. The samples pre- treated in hydrogen at 150°C are characterized by the presence of gold Au3+ cations located on the surface in slightly disordered octahedral oxygen coordination. Metallic gold nanoparticles with a size of about 2 nm and gold clusters were found in the samples treated in hydrogen at 300°C.