What are the Active Sites of Gold in CO Oxidation Reaction?
Conference theses
| Общее |
Language:
Английский,
Genre:
Conference Abstracts,
Status:
Published,
Source type:
Original
|
| Conference |
XII European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources” (EuropaCat-XII)
30 Aug - 4 Sep 2015
,
Казань
|
| Source |
EuropaCat XII. Catalysis: Balancing the use of fossil and renewable resources. XII European Congress on Catalysis, Kazan (Russia), 30 August - 4 September, 2015 : Book of Abstracts
Compilation,
Boreskov Institute of Catalysis. Novosibirsk.2015.
2184 c. ISBN 9785906376107.
РИНЦ
|
| Output data |
Year: 2015,
Pages: 355-356
Pages count
: 2
|
| Authors |
Klyushin A.Yu.
1
,
Rocha T.C.R.
1
,
Li X.
1
,
Huang X.
1
,
Lunkeinbein T.
1
,
Friedrich M.
1
,
Hävecker M.
1,2
,
Bukhtiyarov A.V.
3,4
,
Prosvirin I.P.
3,4
,
Bukhtiyarov V.I.
3,4
,
Knop-Gericke A.
1
,
Schlögl R.
1
|
| Affiliations |
| 1 |
Fritz-Haber-Institute of the Max Planck Society, Dep. of Inorganic Chemistry, Berlin, Germany
|
| 2 |
Helmholtz-Zentrum Berlin/BESSY II, Department of Solar Energy Research, Berlin, Germany
|
| 3 |
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
|
| 4 |
Novosibirsk State University, Novosibirsk, Russia
|
|
Since the 90’s, Au catalysis has attracted a lot of attention; however, the active sites of Au catalysts are still not well understood. Here we report a systematic study of the activation mechanism of Au in CO oxidation using in-situ and ex-situ techniques. Our in-situ measurements show that the oxidation of extended Au surfaces by O3 treatment is accompanied by the formation of a metastable surface oxide; however, Au-oxide does not directly participate in CO oxidation over Au catalysts. Au NPs on oxygen-free supports remain inactive regardless of the NPs’ size and the type of the support. In contrast, Au NPs on transition metal oxides show high catalytic activity, which depends on the method of preparation. Our findings suggest that Au NPs are activated via Strong Metal Support Interactions, assuming a strong influence of the support on the electronic Au structure through charge transfer and stabilization of low-coordinated Au atoms.